@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;800&family=DM+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #0e0f13;
  --bg2: #16171d;
  --bg3: #1e1f27;
  --bg4: #282a35;
  --text: #e8e6e3;
  --text2: #a09e9a;
  --text3: #6b6966;
  --blue: #5b9bf5;
  --blue2: #3a7be0;
  --blue-bg: rgba(91,155,245,0.08);
  --green: #4ecb71;
  --green-bg: rgba(78,203,113,0.08);
  --red: #f55b6a;
  --red-bg: rgba(245,91,106,0.08);
  --purple: #b07ef5;
  --purple-bg: rgba(176,126,245,0.08);
  --orange: #f5a623;
  --orange-bg: rgba(245,166,35,0.08);
  --gold: #f0d060;
  --accent: var(--blue);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --sidebar-width: 280px;
  --sidebar-hover-zone: 34px;
}

* { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }

/* NAV SIDEBAR */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width); background: var(--bg2);
  border-right: 1px solid var(--bg4);
  z-index: 100; overflow-y: auto;
  transform: translateX(calc(-1 * var(--sidebar-width) - 2px));
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
  will-change: transform;
}
body.sidebar-visible .sidebar,
.sidebar.open,
.sidebar:focus-within {
  transform: translateX(0);
  box-shadow: 18px 0 36px rgba(0,0,0,0.32);
}
.sidebar-hotspot {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-hover-zone);
  z-index: 90;
}
[data-section],
.card-header,
.tab-btn,
.day-link,
.slide-thumb {
  outline-offset: 3px;
}
[data-section]:focus-visible,
.card-header:focus-visible,
.tab-btn:focus-visible,
.day-link:focus-visible,
.slide-thumb:focus-visible,
.nav-toggle:focus-visible,
.print-fab:focus-visible {
  outline: 2px solid var(--blue);
}
.sidebar-header {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--bg4);
}
.sidebar-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 20px; font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.sidebar-header p { font-size: 12px; color: var(--text3); margin-top: 4px; letter-spacing: 1.5px; text-transform: uppercase; }
.nav-section { padding: 16px 0; }
.nav-section-title {
  font-size: 10px; text-transform: uppercase; letter-spacing: 2px;
  color: var(--text3); padding: 0 24px; margin-bottom: 8px; font-weight: 600;
}
.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 24px; font-size: 14px; color: var(--text2);
  cursor: pointer; transition: all var(--transition);
  text-decoration: none; border-left: 3px solid transparent;
}
.nav-link:hover, .nav-link.active {
  background: var(--blue-bg); color: var(--blue);
  border-left-color: var(--blue);
}
.nav-link .icon { font-size: 16px; width: 20px; text-align: center; }

/* PROGRESS BAR */
.progress-container {
  padding: 20px 24px; margin-top: auto;
  border-top: 1px solid var(--bg4);
}
.progress-label { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.progress-bar { height: 6px; background: var(--bg4); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--blue), var(--purple)); border-radius: 3px; transition: width 0.5s ease; }
.progress-text { font-size: 12px; color: var(--text2); margin-top: 6px; }

/* MOBILE NAV TOGGLE */
.nav-toggle {
  display: none; position: fixed; top: 16px; left: 16px;
  z-index: 200; width: 44px; height: 44px;
  background: var(--bg3); border: 1px solid var(--bg4);
  border-radius: var(--radius-sm); cursor: pointer;
  color: var(--text); font-size: 20px;
  align-items: center; justify-content: center;
}

/* MAIN CONTENT */
.main {
  width: 100%;
  max-width: min(100% - 64px, 1600px);
  margin: 0 auto;
  padding: 28px clamp(24px, 3.2vw, 56px) 80px;
}

/* SECTIONS */
.section {
  display: none; animation: fadeIn 0.4s ease;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
}
.section.active { display: block; }
#sec-home { max-width: none; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 36px; font-weight: 800;
  margin-bottom: 8px;
}
.section-subtitle { color: var(--text2); font-size: 16px; margin-bottom: 36px; }

/* CARDS */
.card {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); padding: 28px;
  margin-bottom: 20px; transition: all var(--transition);
}
.card:hover { border-color: var(--blue); box-shadow: 0 0 20px rgba(91,155,245,0.08); }
.card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; cursor: pointer; }
.card-icon { font-size: 24px; }
.card-title { font-family: 'Playfair Display', serif; font-size: 20px; font-weight: 700; flex: 1; }
.card-toggle { color: var(--text3); font-size: 18px; transition: transform var(--transition); }
.card.collapsed .card-body { display: none; }
.card.collapsed .card-toggle { transform: rotate(-90deg); }

/* CONCEPT BLOCKS */
.concept-grid { display: grid; gap: 16px; }
.concept-block {
  padding: 20px; border-radius: var(--radius-sm);
  border-left: 4px solid; font-size: 14px;
}
.concept-block.definition { background: var(--blue-bg); border-color: var(--blue); }
.concept-block.intuition { background: var(--green-bg); border-color: var(--green); }
.concept-block.trap { background: var(--red-bg); border-color: var(--red); }
.concept-block.formula { background: var(--purple-bg); border-color: var(--purple); }
.concept-block.exam-tip { background: var(--orange-bg); border-color: var(--orange); }
.concept-block .label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 6px;
}
.concept-block.definition .label { color: var(--blue); }
.concept-block.intuition .label { color: var(--green); }
.concept-block.trap .label { color: var(--red); }
.concept-block.formula .label { color: var(--purple); }
.concept-block.exam-tip .label { color: var(--orange); }
.concept-block p { color: var(--text); }
.concept-block .katex { font-size: 1.02em; }
.concept-block .katex-display { margin: 0.35rem 0; overflow-x: auto; overflow-y: hidden; }
.s2-exam-formulas { color: var(--text); }
.s2-exam-formulas .katex-display { text-align: left; }
.concept-block code {
  font-family: 'JetBrains Mono', monospace; font-size: 13px;
  background: rgba(255,255,255,0.05); padding: 2px 6px; border-radius: 4px;
}

/* FORMULA BOX */
.formula-box {
  background: var(--purple-bg); border: 1px solid rgba(176,126,245,0.2);
  border-radius: var(--radius); padding: 24px; text-align: center;
  margin: 16px 0; font-family: 'JetBrains Mono', monospace;
  font-size: 18px; color: var(--purple); letter-spacing: 0.5px;
}
.formula-box .formula-name {
  font-family: 'DM Sans', sans-serif; font-size: 12px;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--text3); margin-bottom: 12px;
}
.formula-box .formula-sublabel {
  font-family: 'DM Sans', sans-serif; font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--purple); margin: 14px 0 2px;
  opacity: 0.85;
}

/* GRAPH CONTAINER */
.graph-container {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); padding: 28px; margin: 20px 0;
}
.graph-container h3 {
  font-family: 'Playfair Display', serif; font-size: 18px;
  margin-bottom: 16px;
}
.graph-canvas-wrap {
  background: var(--bg); border-radius: var(--radius-sm);
  padding: 20px; position: relative;
}
canvas { display: block; margin: 0 auto; }
.graph-controls {
  display: flex; gap: 16px; align-items: center; margin-top: 16px;
  flex-wrap: wrap;
}
.graph-controls label {
  font-size: 13px; color: var(--text2); display: flex; align-items: center; gap: 8px;
}
.graph-controls input[type=range] {
  width: 140px; accent-color: var(--blue);
}
.graph-controls .val { color: var(--blue); font-weight: 600; font-family: 'JetBrains Mono', monospace; font-size: 13px; min-width: 30px; }
.graph-explain {
  margin-top: 16px; padding: 16px; background: var(--bg);
  border-radius: var(--radius-sm); font-size: 13px; color: var(--text2);
}
.graph-explain strong { color: var(--text); }

/* FLASHCARD */
.flashcard-area { text-align: center; }
.flashcard-stats {
  display: flex; gap: 24px; justify-content: center; margin-bottom: 24px;
}
.flashcard-stats .stat { text-align: center; }
.flashcard-stats .stat-num { font-size: 28px; font-weight: 700; font-family: 'JetBrains Mono', monospace; }
.flashcard-stats .stat-label { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 1px; }
.flashcard {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); padding: 48px 40px;
  min-height: 260px; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition);
  position: relative;
}
.flashcard:hover { border-color: var(--blue); }
.flashcard .fc-label {
  position: absolute; top: 16px; left: 20px;
  font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text3);
}
.flashcard .fc-category {
  position: absolute; top: 16px; right: 20px;
  font-size: 10px; text-transform: uppercase; letter-spacing: 1px;
  color: var(--purple); background: var(--purple-bg);
  padding: 3px 10px; border-radius: 20px;
}
.flashcard .fc-question {
  font-family: 'Playfair Display', serif; font-size: 22px; font-weight: 600;
}
.flashcard .fc-answer {
  font-size: 16px; color: var(--text2); margin-top: 16px;
  display: none; line-height: 1.7;
  white-space: pre-line;
}
.flashcard .fc-answer.show { display: block; }
.flashcard .fc-hint { font-size: 13px; color: var(--text3); margin-top: 20px; }
.fc-buttons {
  display: flex; gap: 12px; margin-top: 20px; justify-content: center;
}
.fc-buttons button {
  padding: 12px 20px; border-radius: var(--radius-sm);
  border: 1px solid var(--bg4); background: var(--bg3);
  color: var(--text); font-size: 14px; cursor: pointer;
  transition: all var(--transition); font-family: 'DM Sans', sans-serif;
}
.fc-buttons button:hover { border-color: var(--blue); background: var(--blue-bg); }
.fc-buttons .btn-again { border-color: var(--red); }
.fc-buttons .btn-again:hover { background: var(--red-bg); }
.fc-buttons .btn-hard { border-color: var(--orange); }
.fc-buttons .btn-hard:hover { background: var(--orange-bg); }
.fc-buttons .btn-good { border-color: var(--green); }
.fc-buttons .btn-good:hover { background: var(--green-bg); }
.fc-buttons .btn-easy { border-color: var(--blue); }
.fc-buttons .btn-easy:hover { background: var(--blue-bg); }

/* QUIZ */
.quiz-question {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); padding: 28px; margin-bottom: 20px;
}
.quiz-question h3 { font-size: 16px; margin-bottom: 16px; }
.quiz-question .q-num { color: var(--blue); font-weight: 600; margin-right: 8px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-opt {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--bg4); background: var(--bg3);
  cursor: pointer; transition: all var(--transition); font-size: 14px;
}
.quiz-opt:hover { border-color: var(--blue); }
.quiz-opt.correct { border-color: var(--green); background: var(--green-bg); }
.quiz-opt.wrong { border-color: var(--red); background: var(--red-bg); }
.quiz-opt.disabled { pointer-events: none; opacity: 0.7; }
.quiz-opt .letter {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg4); display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; flex-shrink: 0;
}
.quiz-explanation {
  margin-top: 12px; padding: 14px; border-radius: var(--radius-sm);
  background: var(--green-bg); font-size: 13px; color: var(--green);
  display: none;
}
.quiz-explanation.show { display: block; }
.quiz-score-bar {
  display: flex; gap: 8px; align-items: center; margin-bottom: 24px;
}
.quiz-score-bar span { font-size: 14px; color: var(--text2); }
.quiz-score-bar .score-num { font-weight: 700; color: var(--blue); font-family: 'JetBrains Mono', monospace; }
.quiz-completion-box {
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  border-radius: 10px;
  margin: -8px 0 18px;
  border: 1px solid var(--bg4);
  background: var(--bg2);
}
.quiz-completion-box strong {
  display: block;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 4px;
}
.quiz-completion-box span {
  display: block;
  color: var(--text2);
  font-size: 13px;
}
.quiz-completion-box.success {
  border-color: rgba(78,203,113,.45);
  background: linear-gradient(90deg, rgba(78,203,113,.14), rgba(78,203,113,.04));
}
.quiz-completion-box.retry {
  border-color: rgba(245,166,35,.45);
  background: linear-gradient(90deg, rgba(245,166,35,.12), rgba(245,166,35,.04));
}

/* QUICK REVISION */
.quick-card {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); padding: 20px 24px;
  margin-bottom: 12px; display: flex; align-items: flex-start; gap: 14px;
}
.quick-card .qc-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--blue-bg); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.quick-card .qc-text { font-size: 14px; }
.quick-card .qc-text strong { color: var(--blue); }

/* TRAPS */
.trap-card {
  background: var(--red-bg); border: 1px solid rgba(245,91,106,0.15);
  border-radius: var(--radius); padding: 20px 24px;
  margin-bottom: 12px; display: flex; align-items: flex-start; gap: 14px;
}
.trap-card .trap-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(245,91,106,0.15); color: var(--red);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
}

/* TABS */
.tabs {
  display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 24px;
  background: var(--bg3); border-radius: var(--radius-sm);
  padding: 4px;
}
.tab-btn {
  padding: 10px 20px; border-radius: var(--radius-sm);
  border: none; background: transparent; color: var(--text2);
  font-size: 13px; cursor: pointer; transition: all var(--transition);
  font-family: 'DM Sans', sans-serif; font-weight: 500;
}
.tab-btn.active { background: var(--bg); color: var(--text); box-shadow: var(--shadow); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* BUTTON */
.btn {
  padding: 12px 24px; border-radius: var(--radius-sm);
  border: none; cursor: pointer; font-size: 14px;
  font-family: 'DM Sans', sans-serif; font-weight: 500;
  transition: all var(--transition);
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue2); }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--bg4); }
.btn-secondary:hover { border-color: var(--blue); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-hotspot { display: none; }
  .nav-toggle { display: flex; }
  .main { max-width: 100%; margin-left: 0; padding: 20px 16px 60px; }
  .section[id^="sec-alain"] { margin-left: 0 !important; padding: 20px 16px 60px !important; max-width: 100% !important; }
  .section[id^="sec-alain"] * { min-width: 0; overflow-wrap: anywhere; }
  .section[id^="sec-alain"] [style*="grid-template-columns:1fr 1fr"],
  .section[id^="sec-alain"] [style*="grid-template-columns:1fr 1fr 1fr"],
  .section[id^="sec-alain"] [style*="grid-template-columns:repeat(5"],
  .section[id^="sec-alain"] [style*="grid-template-columns:repeat(auto-fit"] {
    grid-template-columns: 1fr !important;
  }
  .section-title { font-size: 28px; }
  .graph-controls { flex-direction: column; align-items: flex-start; }
  canvas { max-width: 100%; height: auto; }
  .fc-buttons { flex-wrap: wrap; }
}

/* HERO */
.hero-banner {
  background: linear-gradient(135deg, rgba(91,155,245,0.1), rgba(176,126,245,0.1));
  border: 1px solid var(--bg4); border-radius: var(--radius);
  padding: clamp(28px, 3vw, 42px);
  margin-bottom: 24px;
  display: grid;
  grid-template-columns: minmax(320px, 1.05fr) minmax(520px, 0.95fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  text-align: left;
}
.hero-banner h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(34px, 3.6vw, 54px);
  line-height: 1.05;
  font-weight: 800;
  margin-bottom: 12px;
}
.hero-banner p { color: var(--text2); font-size: 17px; max-width: 680px; margin: 0; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(86px, 1fr));
  gap: 10px;
  justify-content: stretch;
  margin-top: 0;
}
.hero-stat {
  min-height: 92px;
  padding: 14px 10px;
  text-align: center;
  background: rgba(14,15,19,0.45);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-stat .hs-num { font-size: clamp(26px, 2vw, 34px); font-weight: 700; color: var(--blue); font-family: 'JetBrains Mono', monospace; }
.hero-stat .hs-label { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 1px; }
.next-action-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  margin: 20px 0 28px;
  padding: 18px 20px;
  border: 1px solid rgba(91,155,245,0.3);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, rgba(91,155,245,0.12), rgba(78,203,113,0.05));
}
.next-action-kicker {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.1px;
  text-transform: uppercase;
}
.next-action-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(20px, 2.2vw, 28px);
  margin: 4px 0 2px;
}
.next-action-card p {
  color: var(--text2);
  font-size: 14px;
  margin: 0;
}
.home-exam-card {
  border-color: rgba(78,203,113,0.28) !important;
  background: linear-gradient(135deg,rgba(78,203,113,0.07),rgba(91,155,245,0.05)) !important;
  margin-bottom: 24px;
}
.home-route-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.home-route-step {
  min-height: 132px;
  background: var(--bg);
  border-radius: 10px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.home-route-step span { font-size: 13px; color: var(--text2); }
.home-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
#sec-home .home-action-grid .card {
  min-height: 158px;
  margin-bottom: 0;
  padding: 24px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
#sec-home .home-action-grid .card > div:first-child { font-size: 30px; margin-bottom: 10px; }
#sec-home .home-action-grid .card > div:nth-child(2) { font-weight: 700; margin-bottom: 4px; }
#sec-home .home-action-grid .card > div:nth-child(3) { font-size: 13px; color: var(--text3); }
@media (max-width: 1200px) {
  .hero-banner { grid-template-columns: 1fr; text-align: center; }
  .hero-banner p { margin: 0 auto; }
  .hero-stats { grid-template-columns: repeat(5, minmax(80px, 1fr)); }
}
@media (max-width: 760px) {
  .hero-stats, .home-route-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .next-action-card { grid-template-columns: 1fr; }
  .home-route-grid .home-route-step:last-child { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-stat:last-child { grid-column: 1 / -1; }
  .home-route-grid { grid-template-columns: 1fr; }
  .home-route-grid .home-route-step:last-child { grid-column: auto; }
}

/* MISC */
hr.divider { border: none; border-top: 1px solid var(--bg4); margin: 28px 0; }
.tag { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.tag-blue { background: var(--blue-bg); color: var(--blue); }
.tag-green { background: var(--green-bg); color: var(--green); }
.tag-red { background: var(--red-bg); color: var(--red); }
.tag-purple { background: var(--purple-bg); color: var(--purple); }

/* ECONOMIST CARDS — ACCORDION */
.econ-grid { display: flex; flex-direction: column; gap: 10px; }
.econ-card {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: var(--radius); overflow: hidden;
  transition: all var(--transition); cursor: pointer;
}
.econ-card:hover { border-color: rgba(240,208,96,0.3); }
.econ-card.open { border-color: rgba(240,208,96,0.25); cursor: default; }
.econ-header {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 24px; position: relative;
}
.econ-header::after {
  content: '▸'; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  color: var(--text3); font-size: 14px; transition: transform 0.3s ease;
}
.econ-card.open .econ-header::after { content: '▾'; }
.econ-name {
  font-family: 'Playfair Display', serif; font-size: 17px; font-weight: 700;
  color: var(--text);
}
.econ-years {
  font-size: 11px; color: var(--text3); font-family: 'JetBrains Mono', monospace;
  background: var(--bg4); padding: 2px 10px; border-radius: 20px;
}
.econ-body {
  max-height: 0; overflow: hidden; transition: max-height 0.5s cubic-bezier(0.4,0,0.2,1);
}
.econ-card.open .econ-body { max-height: 3000px; }
.econ-content {
  padding: 0 24px 28px; border-top: 1px solid var(--bg4);
}
.econ-section {
  margin-top: 18px;
}
.econ-section-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 600; margin-bottom: 8px; display: flex; align-items: center; gap: 6px;
}
.econ-section-title.idea { color: var(--gold); }
.econ-section-title.context { color: var(--text3); }
.econ-section-title.model { color: var(--blue); }
.econ-section-title.graph { color: var(--purple); }
.econ-section-title.course { color: var(--green); }
.econ-section-title.exam { color: var(--orange); }
.econ-section-title.trap { color: var(--red); }
.econ-section p, .econ-section ul {
  font-size: 13.5px; color: var(--text2); line-height: 1.7;
}
.econ-section ul { padding-left: 18px; margin-top: 4px; }
.econ-section ul li { margin-bottom: 4px; }
.econ-section strong { color: var(--text); }
.econ-section code {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  background: rgba(255,255,255,0.05); padding: 1px 5px; border-radius: 3px;
  color: var(--purple);
}
.econ-graph-wrap {
  background: var(--bg); border-radius: var(--radius-sm);
  padding: 16px; margin-top: 8px; text-align: center;
}
.econ-graph-wrap svg { max-width: 100%; height: auto; }
.econ-exam-box {
  background: var(--orange-bg); border-radius: var(--radius-sm);
  padding: 14px 16px; margin-top: 8px;
}
.econ-exam-box li { color: var(--orange); }
.econ-trap-box {
  background: var(--red-bg); border-radius: var(--radius-sm);
  padding: 14px 16px; margin-top: 8px;
}
.econ-trap-box p { color: var(--red); }

/* VARIABLE TABLE */
.var-table { display: flex; flex-direction: column; gap: 2px; }
.var-row {
  display: grid; grid-template-columns: 100px 220px 1fr; gap: 16px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  background: var(--bg2); align-items: baseline; font-size: 14px;
}
.var-row.var-header {
  background: var(--bg4); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: 1px; color: var(--text3);
  position: sticky; top: 0; z-index: 1;
}
.var-sym {
  font-family: 'JetBrains Mono', monospace; font-weight: 600;
  color: var(--purple); font-size: 15px;
}
.var-header .var-sym { color: var(--text3); font-size: 12px; }
.var-name { color: var(--blue); font-weight: 500; }
.var-header .var-name { color: var(--text3); }
.var-desc { color: var(--text2); line-height: 1.6; }
.var-header .var-desc { color: var(--text3); }
@media (max-width: 700px) {
  .var-row { grid-template-columns: 70px 1fr; }
  .var-desc { grid-column: 1 / -1; }
}

.reset-btn {
  display: inline-block; margin-top: 16px; padding: 8px 16px;
  background: var(--red-bg); color: var(--red); border: 1px solid rgba(245,91,106,0.2);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 12px;
  font-family: 'DM Sans', sans-serif;
}

.reveal-btn {
  display: inline-block; margin: 6px 0 4px; padding: 10px 18px;
  background: linear-gradient(135deg, rgba(245,166,35,0.15), rgba(176,126,245,0.12));
  color: var(--orange); border: 1px solid rgba(245,166,35,0.35);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 13px; font-weight: 600;
  font-family: 'DM Sans', sans-serif; transition: all .15s ease;
}
.reveal-btn:hover { border-color: var(--orange); transform: translateY(-1px); }
.reveal-btn.revealed { color: var(--text2); background: var(--bg2); border-color: var(--bg4); }
.exam-solution { margin-top: 14px; animation: examReveal .25s ease; }
@keyframes examReveal { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.exam-questions { background: var(--bg); border-left: 3px solid var(--purple); border-radius: var(--radius-sm); padding: 14px 16px; margin: 12px 0; }
.exam-questions .label { font-family: 'DM Sans', sans-serif; font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--purple); margin-bottom: 8px; font-weight: 600; }
.exam-questions ol { margin: 0 0 0 18px; padding: 0; }
.exam-questions li { font-size: 13.5px; color: var(--text2); line-height: 1.7; margin-bottom: 6px; }

.study-callout {
  background: linear-gradient(135deg, rgba(91,155,245,0.10), rgba(78,203,113,0.07));
  border: 1px solid rgba(91,155,245,0.22);
  border-radius: var(--radius-md);
  padding: 18px;
  margin: 18px 0;
}
.model-map-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(230px,1fr)); gap: 14px; }
.model-step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  position: relative;
}
.model-step strong { color: var(--blue); }
.model-step .formula { color: var(--green); font-family: 'JetBrains Mono', monospace; font-size: 12px; margin-top: 8px; display: block; }
.model-arrow {
  display: flex; align-items: center; justify-content: center;
  color: var(--purple); font-weight: 700; font-size: 24px; min-height: 42px;
}
.method-grid, .formula-bank {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap: 12px;
}
.method-card, .formula-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px;
  font-size: 13px;
}
.math-chip {
  display: inline-flex;
  align-items: center;
  margin: 4px 3px 0;
  padding: 4px 8px;
  border-radius: 7px;
  background: rgba(176,126,245,0.11);
  border: 1px solid rgba(176,126,245,0.22);
  color: var(--text);
  vertical-align: middle;
}
.math-chip .katex { font-size: 1.05em; }
.method-card strong, .formula-chip strong { color: var(--text); display:block; margin-bottom:6px; }
.exam-sim-layout { display: grid; grid-template-columns: minmax(240px,320px) 1fr; gap: 16px; align-items: start; }
.exam-list {
  max-height: 620px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
}
.exam-item {
  text-align: left;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text2);
  border-radius: var(--radius-sm);
  padding: 12px;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
}
.exam-item.active { border-color: rgba(91,155,245,0.55); color: var(--text); background: rgba(91,155,245,0.09); }
.exam-theme-badge {
  display: inline-block;
  font-size: 11px;
  color: var(--green);
  border: 1px solid rgba(78,203,113,0.28);
  background: rgba(78,203,113,0.08);
  border-radius: 999px;
  padding: 2px 8px;
  margin-bottom: 6px;
}
.score-bar-mini { height: 8px; background: var(--bg2); border-radius: 999px; overflow: hidden; margin-top: 8px; }
.score-bar-mini span { display:block; height:100%; background: linear-gradient(90deg,var(--red),var(--yellow),var(--green)); width:0%; }
.weakness-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:14px; }
.weakness-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}
.weakness-card[data-level="weak"] { border-color: rgba(245,91,106,0.35); }
.weakness-card[data-level="mid"] { border-color: rgba(245,190,91,0.35); }
.weakness-card[data-level="strong"] { border-color: rgba(78,203,113,0.35); }
.coverage-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:14px; }
.coverage-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}
.coverage-card[data-status="weak"] { border-color: rgba(245,91,106,0.35); }
.coverage-card[data-status="mid"] { border-color: rgba(245,190,91,0.35); }
.coverage-card[data-status="strong"] { border-color: rgba(78,203,113,0.35); }
.session-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.session-matrix th,
.session-matrix td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--bg4);
  vertical-align: top;
  text-align: left;
}
.session-matrix th {
  color: var(--text2);
  background: var(--bg);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .6px;
}
.coverage-check {
  display:inline-flex;
  align-items:center;
  gap:5px;
  border:1px solid var(--border);
  background:var(--bg);
  border-radius:999px;
  padding:3px 8px;
  margin:2px 4px 2px 0;
  font-size:11px;
  color:var(--text2);
}
.coverage-check.ok { border-color:rgba(78,203,113,0.35); color:var(--green); background:rgba(78,203,113,0.08); }
.coverage-check.mid { border-color:rgba(245,190,91,0.35); color:var(--yellow); background:rgba(245,190,91,0.08); }
.coverage-check.warn { border-color:rgba(245,91,106,0.35); color:var(--red); background:rgba(245,91,106,0.08); }
.source-line {
  font-size: 12px;
  color: var(--text3);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin: 4px 0 10px;
}
.meta-pill {
  display:inline-flex;
  align-items:center;
  gap:4px;
  border:1px solid var(--border);
  background:var(--bg);
  color:var(--text2);
  border-radius:999px;
  padding:3px 9px;
  font-size:11px;
}
.auto-answer-box, .rubric-box, .path-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-top: 12px;
}
.auto-answer-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap:10px;
  margin-top:10px;
}
.auto-answer-grid label { font-size:12px; color:var(--text2); display:flex; flex-direction:column; gap:6px; }
.auto-answer-grid input {
  background:var(--bg2);
  color:var(--text);
  border:1px solid var(--border);
  border-radius: var(--radius-sm);
  padding:9px 10px;
  font-family:'JetBrains Mono', monospace;
}
.rubric-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap:8px;
  margin-top:10px;
}
.rubric-item {
  border:1px solid var(--border);
  background:var(--bg2);
  border-radius:var(--radius-sm);
  padding:10px;
  font-size:12px;
  color:var(--text2);
}
.rubric-item input { margin-right:6px; }
.path-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:14px; }
.focus-mode-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:14px; }
.focus-mode-card {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:16px;
}
.focus-mode-card.active { border-color:rgba(91,155,245,0.55); background:rgba(91,155,245,0.07); }
.focus-step-list { display:grid; gap:10px; margin-top:14px; }
.focus-step {
  display:grid;
  grid-template-columns:58px 1fr;
  gap:12px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:12px;
}
.focus-step .minutes {
  font-family:'JetBrains Mono', monospace;
  color:var(--blue);
  font-weight:700;
  font-size:13px;
}
.focus-chip-row { display:flex; gap:7px; flex-wrap:wrap; margin-top:10px; }
.focus-chip {
  display:inline-flex;
  align-items:center;
  border:1px solid var(--border);
  background:var(--bg);
  border-radius:999px;
  color:var(--text2);
  padding:5px 10px;
  font-size:12px;
  cursor:pointer;
}
.focus-chip:hover { border-color:rgba(91,155,245,0.45); color:var(--blue); }
.timer-box {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:12px;
  margin-bottom:14px;
}
.timer-display { font-family:'JetBrains Mono', monospace; font-size:18px; color:var(--green); min-width:78px; }
.mock-grid, .competency-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap:14px;
}
.graph-drill-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(min(100%,520px),1fr));
  gap:16px;
}
.mock-part, .graph-drill-card, .competency-card {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:16px;
}
.mock-part[data-kind="calculation"] { border-color:rgba(91,155,245,0.35); }
.mock-part[data-kind="model"] { border-color:rgba(176,126,245,0.35); }
.mock-part[data-kind="graph"] { border-color:rgba(78,203,113,0.35); }
.mock-part[data-kind="policy"] { border-color:rgba(245,190,91,0.35); }
.mock-part[data-kind="trap"] { border-color:rgba(245,91,106,0.35); }
.graph-options { display:grid; gap:8px; margin-top:10px; }
.graph-options button {
  text-align:left;
  border:1px solid var(--border);
  background:var(--bg);
  color:var(--text2);
  border-radius:var(--radius-sm);
  padding:10px;
  font-family:'DM Sans', sans-serif;
  cursor:pointer;
}
.graph-options button.correct { border-color:rgba(78,203,113,0.65); color:var(--green); }
.graph-options button.wrong { border-color:rgba(245,91,106,0.65); color:var(--red); }
.graph-drill-diagram {
  background:#fff;
  border:1px solid #d8dee9;
  border-radius:8px;
  padding:10px;
  margin:12px 0;
  box-shadow:0 8px 18px rgba(0,0,0,0.18);
}
.graph-drill-diagram-title {
  color:#111827;
  font-family:'DM Sans', sans-serif;
  font-size:13px;
  font-weight:800;
  margin:0 0 8px;
}
.graph-drill-diagram svg {
  overflow:visible;
}
.competency-card[data-level="weak"] { border-color:rgba(245,91,106,0.35); }
.competency-card[data-level="mid"] { border-color:rgba(245,190,91,0.35); }
.competency-card[data-level="strong"] { border-color:rgba(78,203,113,0.35); }
@media (max-width: 900px) {
  .exam-sim-layout { grid-template-columns: 1fr; }
  .exam-list { max-height: none; }
}
.katex-block { margin: 12px 0; padding: 14px 18px; background: var(--purple-bg); border-left: 3px solid var(--purple); border-radius: 8px; overflow-x: auto; }
.katex-block .katex-name { font-family: 'DM Sans', sans-serif; font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--purple); margin-bottom: 8px; font-weight: 600; }
.katex { color: var(--text) !important; font-size: 1.05em !important; }




/* === T8 : Mobile-responsive Naef sections === */
.alain-session-section { margin: 0 auto; padding: 40px 56px 80px; max-width: 1120px; }
@media (max-width: 1024px) {
  .alain-session-section { margin-left: 0; padding: 20px 16px 60px; max-width: 100%; }
}

/* === T7 : Print mode (formula bank + traps + key concepts) === */
@media print {
  body { background: white !important; color: black !important; }
  .sidebar, .nav-toggle, .hero-stats, .card-toggle, .stats, footer, header,
  .fc-buttons, .flashcard-stats, .graph-controls, .reset-btn,
  .slide-thumb, .slide-lightbox, .cal-control, .cal-progress-summary,
  .p2020-grade-bar, .p2020-imp-grid, .day-link, button {
    display: none !important;
  }
  .section { display: none !important; margin: 0 !important; padding: 0 !important; }
  .section#sec-formulas, .section#sec-variables, .section#sec-traps,
  .section#sec-exam-eve, .section#sec-pathto2020 {
    display: block !important; page-break-after: always;
  }
  .card { border: 1px solid #ccc !important; background: white !important; box-shadow: none !important; page-break-inside: avoid; margin: 8px 0 !important; }
  .card-body { padding: 8px !important; }
  .formula-box, .katex-block { background: #f9f9f9 !important; border-color: #ccc !important; color: black !important; }
  .formula-box .formula-name, .katex-block .katex-name { color: #555 !important; }
  h2.section-title, h3 { color: black !important; page-break-after: avoid; }
  p, li { color: black !important; }
  table { border-collapse: collapse !important; }
  th, td { border: 1px solid #ccc !important; color: black !important; padding: 4px !important; }
  .trap-card { background: white !important; border: 1px solid #ccc !important; color: black !important; }
  .katex, .katex * { color: black !important; }
  @page { margin: 1.5cm; }
}

/* === Bouton print persistant === */
.print-fab {
  position: fixed; bottom: 24px; right: 24px; z-index: 1000;
  background: var(--purple); color: var(--bg); border: none;
  width: 50px; height: 50px; border-radius: 50%; cursor: pointer;
  font-size: 20px; box-shadow: 0 6px 20px rgba(176,126,245,.4);
  transition: transform .15s ease;
}
.print-fab:hover { transform: scale(1.1); }

/* === PATH TO 20/20 === */
.p2020-hero { background: linear-gradient(135deg, rgba(176,126,245,.12), rgba(91,155,245,.08)); border: 1px solid rgba(176,126,245,.3); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.p2020-hero h3 { margin-top: 0; color: var(--purple); }
.p2020-message { display: flex; gap: 14px; margin: 12px 0; align-items: flex-start; }
.p2020-message .badge { background: var(--purple); color: var(--bg); font-weight: 700; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }
.p2020-message .text { font-size: 14px; color: var(--text); line-height: 1.6; }
.p2020-grade-bar { display: flex; align-items: center; gap: 16px; padding: 18px 22px; background: var(--bg2); border-radius: var(--radius); margin-bottom: 24px; }
.p2020-grade-bar .label { font-size: 13px; color: var(--text2); white-space: nowrap; }
.p2020-grade-bar .bar { flex: 1; height: 14px; background: var(--bg4); border-radius: 7px; overflow: hidden; position: relative; }
.p2020-grade-bar .bar-fill { height: 100%; background: linear-gradient(90deg, var(--red), var(--orange), var(--yellow), var(--green)); transition: width .4s ease; }
.p2020-grade-bar .bar-marker { position: absolute; top: -3px; width: 3px; height: 20px; background: var(--blue); border-radius: 2px; }
.p2020-grade-bar .grade { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 700; color: var(--green); white-space: nowrap; }
.p2020-coverage { width: 100%; border-collapse: collapse; font-size: 13px; margin: 14px 0; }
.p2020-coverage th { background: var(--bg); color: var(--text3); text-transform: uppercase; font-size: 11px; padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--bg4); }
.p2020-coverage td { padding: 8px; border-bottom: 1px solid var(--bg4); color: var(--text2); vertical-align: top; }
.p2020-coverage .ch { font-family: 'JetBrains Mono', monospace; color: var(--purple); width: 60px; }
.p2020-coverage .v-rich { color: var(--green); font-weight: 600; }
.p2020-coverage .v-mid { color: var(--orange); font-weight: 600; }
.p2020-coverage .v-thin { color: var(--red); font-weight: 600; }
.p2020-day { display: grid; grid-template-columns: 60px 1fr 100px 1fr; gap: 12px; padding: 12px 14px; border-bottom: 1px solid var(--bg4); align-items: center; font-size: 13px; }
.p2020-day:hover { background: var(--bg2); }
.p2020-day .d-num { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--blue); font-size: 14px; }
.p2020-day .d-theme { color: var(--text); font-weight: 500; }
.p2020-day .d-min { color: var(--text3); font-size: 11px; font-family: 'JetBrains Mono', monospace; text-align: right; }
.p2020-day .d-success { color: var(--green); font-size: 11px; font-style: italic; }
.p2020-day-header { display: grid; grid-template-columns: 60px 1fr 100px 1fr; gap: 12px; padding: 8px 14px; background: var(--bg4); border-radius: 6px 6px 0 0; font-size: 10px; color: var(--text3); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.p2020-phase { font-family: 'Playfair Display', serif; font-size: 18px; color: var(--purple); margin: 20px 0 10px; padding: 8px 0; border-bottom: 2px solid var(--purple); }
.p2020-section-link { display: inline-block; padding: 2px 8px; background: var(--blue-bg); color: var(--blue); border-radius: 10px; font-size: 11px; cursor: pointer; margin-right: 4px; margin-bottom: 2px; font-family: 'JetBrains Mono', monospace; }
.p2020-section-link:hover { background: var(--blue); color: var(--bg); }
.p2020-imp-grid { display: grid; gap: 10px; }
.p2020-imp { display: grid; grid-template-columns: 50px 1fr 80px 80px 60px; gap: 12px; padding: 10px 12px; background: var(--bg2); border-radius: 8px; align-items: center; font-size: 13px; border-left: 3px solid var(--blue); }
.p2020-imp.done { border-left-color: var(--green); opacity: .75; }
.p2020-imp.done .imp-name { text-decoration: line-through; }
.p2020-imp .imp-id { font-family: 'JetBrains Mono', monospace; color: var(--text3); font-size: 11px; }
.p2020-imp .imp-stars { color: var(--yellow); font-size: 13px; }
.p2020-imp .imp-effort { font-size: 11px; color: var(--text3); }
.p2020-imp .imp-status { font-size: 11px; color: var(--green); font-weight: 600; }
.p2020-imp .imp-status.todo { color: var(--orange); }


.kbd-hint { display: inline-block; background: var(--bg); color: var(--text3); border: 1px solid var(--bg4); border-radius: 4px; padding: 1px 6px; font-family: 'JetBrains Mono', monospace; font-size: 10px; margin-left: 4px; }
.fc-buttons + .kbd-hints { text-align: center; color: var(--text3); font-size: 11px; margin-top: 8px; }

/* === REVISION CALENDAR === */
.cal-control { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding: 18px 22px; background: linear-gradient(135deg, var(--purple-bg), var(--blue-bg)); border: 1px solid rgba(176,126,245,.3); border-radius: var(--radius); margin-bottom: 20px; }
.cal-control label { font-size: 14px; color: var(--text2); display: flex; align-items: center; gap: 10px; }
.cal-control input[type=date] { background: var(--bg); color: var(--text); border: 1px solid var(--bg4); padding: 8px 12px; border-radius: 6px; font-family: 'JetBrains Mono', monospace; font-size: 13px; }
.cal-countdown { font-size: 28px; font-weight: 700; color: var(--purple); font-family: 'JetBrains Mono', monospace; margin-left: auto; }
.cal-countdown.exam-day { color: var(--red); animation: pulse 1.5s infinite; }
.cal-progress-summary { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; padding: 14px 20px; background: var(--bg2); border-radius: var(--radius); }
.cal-progress-bar { flex: 1; height: 10px; background: var(--bg4); border-radius: 5px; overflow: hidden; }
.cal-progress-fill { height: 100%; background: linear-gradient(90deg, var(--green), var(--blue), var(--purple)); transition: width .4s ease; border-radius: 5px; }
.cal-stats { font-size: 13px; color: var(--text2); font-family: 'JetBrains Mono', monospace; white-space: nowrap; }
.cal-week-label { font-family: 'Playfair Display', serif; font-size: 18px; color: var(--blue); margin: 28px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--bg4); }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; margin-bottom: 8px; }
.cal-day { background: var(--bg2); border: 1px solid var(--bg4); border-radius: 10px; padding: 12px; transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease; cursor: pointer; position: relative; min-height: 180px; display: flex; flex-direction: column; gap: 8px; }
.cal-day:hover { transform: translateY(-2px); border-color: var(--purple); box-shadow: 0 6px 18px rgba(176,126,245,.2); }
.cal-day.today { border-color: var(--blue); box-shadow: 0 0 0 2px rgba(91,155,245,.3); background: linear-gradient(135deg, var(--bg2), var(--blue-bg)); }
.cal-day.past { opacity: .5; }
.cal-day.done { background: linear-gradient(135deg, var(--bg2), var(--green-bg)); border-color: var(--green); }
.cal-day.done .day-theme { color: var(--green); }
.cal-day .day-header { display: flex; justify-content: space-between; align-items: center; }
.cal-day .day-num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text3); }
.cal-day .day-date { font-size: 11px; color: var(--text3); }
.cal-day .day-check { width: 18px; height: 18px; cursor: pointer; accent-color: var(--green); }
.cal-day .day-theme { font-weight: 600; font-size: 13px; color: var(--text); line-height: 1.3; }
.cal-day .day-tasks { list-style: none; padding: 0; margin: 0; font-size: 11px; color: var(--text2); line-height: 1.5; }
.cal-day .day-tasks li { padding: 2px 0; }
.cal-day .day-tasks li::before { content: "• "; color: var(--purple); }
.cal-day .day-duration { font-size: 10px; color: var(--text3); margin-top: auto; font-style: italic; }
.cal-day .day-link { display: inline-block; font-size: 10px; color: var(--blue); text-decoration: none; margin-top: 4px; padding: 3px 8px; background: var(--blue-bg); border-radius: 12px; align-self: flex-start; cursor: pointer; }
.cal-day .day-link:hover { background: var(--blue); color: var(--bg); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .6; } }
@media (max-width: 1200px) { .cal-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 800px) { .cal-grid { grid-template-columns: repeat(2, 1fr); } }
/* === SLIDES GALLERY === */
.slide-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.slide-thumb { background: #fff; border: 1px solid var(--bg4); border-radius: 8px; cursor: zoom-in; overflow: hidden; transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease; }
.slide-thumb:hover { transform: translateY(-3px); border-color: var(--purple); box-shadow: 0 8px 24px rgba(176, 126, 245, .25); }
.slide-thumb img { width: 100%; height: 150px; object-fit: contain; background: #fff; display: block; }
.slide-thumb .slide-caption { background: var(--bg3); color: var(--text3); font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 6px 8px; text-align: center; border-top: 1px solid var(--bg4); }
.slide-lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.94); z-index: 99999; align-items: center; justify-content: center; padding: 32px; cursor: zoom-out; }
.slide-lightbox.active { display: flex; flex-direction: column; gap: 12px; }
.slide-lightbox img { max-width: min(95vw, 1600px); max-height: 88vh; object-fit: contain; background: #fff; border-radius: 8px; box-shadow: 0 0 80px rgba(176, 126, 245, .35); }
.slide-lightbox .lightbox-caption { color: #e6e6e6; font-family: 'JetBrains Mono', monospace; font-size: 12px; opacity: .85; }
.slide-lightbox .close-hint { position: absolute; top: 16px; right: 24px; color: #fff; font-size: 13px; opacity: .6; background: rgba(0,0,0,.3); padding: 6px 12px; border-radius: 20px; }


/* === KaTeX dans formula-chip — force taille lisible === */
.formula-chip code .katex { font-size: 1.15em !important; }
.formula-chip code .katex .mfrac > span { padding: 0.05em 0 !important; }
.formula-chip code { background: transparent !important; padding: 0 !important; }



/* ========== DUE TODAY — REFONTE PREMIUM ========== */
#sec-duetoday { padding-bottom: 100px; }

.due-hero {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 28px 32px;
  background: linear-gradient(135deg, rgba(176,126,245,.18), rgba(91,155,245,.10) 50%, rgba(78,203,113,.08));
  border: 1px solid rgba(176,126,245,.35);
  border-radius: 18px;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.due-hero::before {
  content: '';
  position: absolute; top: -50%; right: -10%;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(176,126,245,.15), transparent 70%);
  pointer-events: none;
}
.due-nav-btn {
  background: rgba(255,255,255,.05);
  border: 1px solid var(--bg4);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  display: flex; align-items: center; gap: 8px;
  transition: all .2s ease;
  z-index: 1;
}
.due-nav-btn:hover {
  background: rgba(176,126,245,.15);
  border-color: var(--purple);
  transform: translateY(-1px);
}
.due-nav-btn:active { transform: translateY(1px); }
.due-hero-center {
  text-align: center;
  z-index: 1;
}
.due-hero-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--purple);
  font-weight: 700;
  margin-bottom: 6px;
}
.due-hero-title {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
  line-height: 1.1;
}
.due-hero-phase {
  font-size: 13px;
  color: var(--text2);
  font-weight: 500;
}

/* Progress ring + stats */
.due-progress-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 20px;
  align-items: center;
  padding: 20px 24px;
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 14px;
  margin-bottom: 22px;
}
.due-progress-ring {
  position: relative;
  width: 70px; height: 70px;
}
.due-progress-ring svg { width: 70px; height: 70px; transform: rotate(-90deg); }
.due-progress-ring .ring-bg { fill: none; stroke: var(--bg4); stroke-width: 8; }
.due-progress-ring .ring-fill {
  fill: none;
  stroke: url(#duegrad);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset .5s ease;
}
.due-progress-ring .ring-label {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px; font-weight: 700;
  color: var(--text);
}
.due-progress-meta {
  display: flex; flex-direction: column; gap: 4px;
}
.due-progress-meta .pm-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text3); }
.due-progress-meta .pm-value { font-size: 14px; color: var(--text); font-weight: 500; }

/* Today button */
.due-today-btn {
  background: var(--bg3);
  border: 1px solid var(--bg4);
  color: var(--text2);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  display: flex; align-items: center; gap: 6px;
  transition: all .15s ease;
}
.due-today-btn:hover { background: var(--blue-bg); color: var(--blue); border-color: var(--blue); }

/* Mission card */
.due-mission {
  background: linear-gradient(180deg, var(--bg2), var(--bg));
  border: 1px solid var(--bg4);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 22px;
}
.due-mission-header {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 22px;
  background: linear-gradient(90deg, rgba(176,126,245,.10), transparent);
  border-bottom: 1px solid var(--bg4);
}
.due-mission-header .mh-icon {
  width: 40px; height: 40px;
  background: rgba(176,126,245,.18);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.due-mission-header .mh-title { flex: 1; font-size: 16px; font-weight: 600; color: var(--text); }
.due-mission-header .mh-meta { font-size: 11px; color: var(--text3); font-family: 'JetBrains Mono', monospace; }
.due-mission-body { padding: 18px 22px; }

.due-task {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--bg4);
  border-left: 4px solid var(--bg4);
  border-radius: 10px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all .2s ease;
  position: relative;
}
.due-task:hover { background: var(--bg2); border-color: rgba(176,126,245,.4); transform: translateX(2px); }
.due-task.done {
  background: linear-gradient(90deg, rgba(78,203,113,.10), transparent);
  border-left-color: var(--green);
}
.due-task.done .due-task-text {
  text-decoration: line-through;
  color: var(--text3);
}
.due-task .due-task-check {
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 2px solid var(--bg4);
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  flex-shrink: 0;
  transition: all .15s ease;
}
.due-task.done .due-task-check {
  background: var(--green);
  border-color: var(--green);
  color: var(--bg);
}
.due-task .due-task-text {
  flex: 1;
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
}
.due-task-status {
  flex-shrink: 0;
  border: 1px solid var(--bg4);
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .02em;
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
}
.due-task-status.again {
  color: var(--red);
  background: rgba(245,91,106,.10);
  border-color: rgba(245,91,106,.35);
}
.due-task-status.partial {
  color: var(--orange);
  background: rgba(245,166,35,.10);
  border-color: rgba(245,166,35,.35);
}
.due-task-status.mastered {
  color: var(--green);
  background: rgba(78,203,113,.10);
  border-color: rgba(78,203,113,.35);
}
.due-task-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  margin-left: auto;
}
.due-task .due-task-link {
  background: var(--blue-bg);
  color: var(--blue);
  border: none;
  padding: 5px 11px;
  border-radius: 12px;
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  cursor: pointer;
  transition: all .15s ease;
  white-space: nowrap;
}
.due-task .due-task-link:hover { background: var(--blue); color: var(--bg); }

.due-target-highlight {
  animation: dueTargetPulse 1.6s ease;
  box-shadow: 0 0 0 2px rgba(91,155,245,.75), 0 0 24px rgba(91,155,245,.28) !important;
}
@keyframes dueTargetPulse {
  0% { box-shadow: 0 0 0 0 rgba(91,155,245,.95), 0 0 0 rgba(91,155,245,0); }
  45% { box-shadow: 0 0 0 4px rgba(91,155,245,.65), 0 0 28px rgba(91,155,245,.32); }
  100% { box-shadow: 0 0 0 1px rgba(91,155,245,0), 0 0 0 rgba(91,155,245,0); }
}

/* Decks grid */
.due-decks-card {
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 22px;
}
.due-decks-header {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--bg4);
}
.due-decks-header .ddh-icon { font-size: 20px; }
.due-decks-header .ddh-title { font-size: 15px; font-weight: 600; color: var(--text); }
.due-decks-header .ddh-count {
  margin-left: auto;
  font-size: 24px; font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--purple);
}
.due-decks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  padding: 18px 22px;
}

/* Note card */
.due-note-card {
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 22px;
}
.due-note-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.due-note-header .dn-icon { font-size: 18px; }
.due-note-header .dn-title { font-size: 14px; font-weight: 600; color: var(--text); }
#dueDayNote {
  width: 100%; min-height: 90px;
  background: var(--bg);
  border: 1px solid var(--bg4);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  font-family: inherit; font-size: 13px;
  resize: vertical;
  transition: border-color .15s ease;
}
#dueDayNote:focus { outline: none; border-color: var(--purple); }
#dueDayNoteStatus { font-size: 11px; color: var(--green); margin-top: 8px; min-height: 14px; }

/* Validate session big button */
.due-validate-row {
  display: flex; gap: 14px; align-items: center; justify-content: center;
  margin: 32px 0 24px;
}
.due-validate-btn {
  background: linear-gradient(135deg, var(--green), #2ea954);
  color: white;
  border: none;
  padding: 16px 36px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 8px 24px rgba(78,203,113,.35);
  transition: all .2s ease;
  letter-spacing: .3px;
}
.due-validate-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(78,203,113,.45); }
.due-validate-btn:active { transform: translateY(0); }
.due-validate-btn.validated {
  background: linear-gradient(135deg, var(--bg3), var(--bg2));
  color: var(--green);
  border: 1px solid var(--green);
  box-shadow: none;
}
.due-validate-info {
  font-size: 12px; color: var(--text3);
  font-family: 'JetBrains Mono', monospace;
}

/* Validated banner */
.due-validated-banner {
  display: none;
  padding: 14px 22px;
  background: linear-gradient(90deg, rgba(78,203,113,.15), transparent);
  border-left: 4px solid var(--green);
  border-radius: 10px;
  margin-bottom: 18px;
  align-items: center; gap: 12px;
  font-size: 14px;
}
.due-validated-banner.visible { display: flex; }
.due-validated-banner .vb-icon { font-size: 22px; }
.due-validated-banner .vb-text { color: var(--green); font-weight: 600; }
.due-validated-banner .vb-meta { color: var(--text3); font-size: 11px; }

/* Float nav */
#dueDayFloatNav {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 14px; align-items: center;
  background: var(--bg2);
  padding: 8px 18px;
  border-radius: 28px;
  border: 1px solid var(--bg4);
  box-shadow: 0 8px 28px rgba(0,0,0,.5);
  z-index: 100;
}
#dueDayFloatNav button {
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 20px;
  padding: 6px 10px;
  border-radius: 50%;
  transition: background .15s ease;
}
#dueDayFloatNav button:hover { background: var(--bg4); }
#dueDayFloatLabel {
  font-size: 13px; color: var(--text2);
  font-family: 'JetBrains Mono', monospace;
  min-width: 60px; text-align: center;
  font-weight: 600;
}


/* ========== BATCH 1 : Header + Sidebar auto-hide + Focus + Skeleton ========== */

/* Header sticky avec countdown examen */
.app-header {
  position: fixed; top: 0; left: 0; right: 0;
  height: 48px;
  background: var(--bg2);
  border-bottom: 1px solid var(--bg4);
  z-index: 90;
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  font-size: 12px;
  backdrop-filter: blur(8px);
  background: rgba(22, 23, 30, 0.95);
}
.app-header .ah-logo { font-weight: 700; color: var(--purple); font-family: 'Playfair Display', serif; }
.app-header .ah-spacer { flex: 1; }
.app-header .ah-stat { display: flex; align-items: center; gap: 6px; color: var(--text2); }
.app-header .ah-stat .ah-val { font-family: 'JetBrains Mono', monospace; font-weight: 700; }
.app-header .ah-countdown.urgent { color: var(--red); animation: pulse 1.5s infinite; }
.app-header .ah-countdown.soon { color: var(--orange); }
.app-header .ah-countdown.safe { color: var(--purple); }
.app-header .ah-focus-btn {
  background: transparent; border: 1px solid var(--bg4); color: var(--text2);
  padding: 4px 10px; border-radius: 6px; cursor: pointer; font-size: 11px;
}
.app-header .ah-focus-btn:hover { background: var(--bg3); color: var(--text); }

body.has-header { padding-top: 48px; }

/* Focus mode : cache sidebar + tout sauf le contenu */
body.focus-mode .sidebar,
body.focus-mode .sidebar-trigger,
body.focus-mode .app-header,
body.focus-mode #dueDayFloatNav,
body.focus-mode .print-fab { display: none !important; }
body.focus-mode { padding-top: 0 !important; padding-left: 0 !important; }
body.focus-mode .main {
  margin: 0 auto !important;
  padding: 40px 60px 80px !important;
  max-width: 820px !important;
  width: 100% !important;
}
body.focus-mode .section {
  margin: 0 auto !important;
  padding: 0 !important;
  max-width: 820px !important;
}
body.focus-mode .alain-session-section {
  margin: 0 auto !important;
  padding: 40px 60px 80px !important;
  max-width: 820px !important;
}
body.focus-mode .focus-exit-hint {
  display: block; position: fixed; top: 16px; right: 16px;
  background: var(--bg3); color: var(--text2);
  padding: 6px 14px; border-radius: 20px; font-size: 11px;
  border: 1px solid var(--bg4); z-index: 200;
}
.focus-exit-hint { display: none; }

/* Sidebar auto-hide */
@media (min-width: 901px) {
  .sidebar.auto-hide {
    transform: translateX(-280px);
    transition: transform .25s ease;
  }
  .sidebar.auto-hide.peek {
    transform: translateX(0);
    box-shadow: 6px 0 24px rgba(0,0,0,.5);
  }
  body.sidebar-hidden .main { margin: 0 auto !important; max-width: 1100px; padding: 40px 48px 80px; transition: max-width .25s ease, padding .25s ease; }
  body.sidebar-hidden .alain-session-section { margin: 0 auto !important; max-width: 1100px !important; padding: 40px 48px 80px !important; }
  body.sidebar-hidden .section { margin-left: auto !important; margin-right: auto !important; max-width: 1100px; }
  /* Trigger zone : 14px à gauche pour faire apparaître */
  .sidebar-trigger {
    position: fixed; left: 0; top: 0; bottom: 0;
    width: 16px;
    z-index: 99;
  }
  .sidebar-trigger::before {
    content: '';
    position: fixed; left: 2px; top: 50%; transform: translateY(-50%);
    width: 4px; height: 40px;
    background: var(--purple); opacity: .3;
    border-radius: 0 4px 4px 0;
    transition: opacity .15s ease;
  }
  .sidebar-trigger:hover::before { opacity: 1; width: 6px; }
}

/* Skeleton loading */
.skeleton-loading {
  position: fixed; inset: 0;
  background: rgba(14, 15, 19, .9);
  display: none; align-items: center; justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(4px);
}
.skeleton-loading.visible { display: flex; }
.skeleton-loading .sk-spinner {
  width: 50px; height: 50px;
  border: 4px solid var(--bg4);
  border-top-color: var(--purple);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }


/* ========== BATCH 2 : STAR SYSTEM ========== */
.fc-star-btn {
  position: absolute; top: 14px; right: 14px;
  background: transparent; border: none;
  color: var(--bg4); cursor: pointer;
  font-size: 20px; padding: 6px;
  transition: all .15s ease;
  z-index: 10;
}
.fc-star-btn:hover { color: var(--orange); transform: scale(1.15); }
.fc-star-btn.starred { color: var(--orange); }
.fc-star-btn.starred:hover { color: var(--red); }
.flashcard { position: relative; }

#sec-starred .star-deck-section { margin-bottom: 24px; }
#sec-starred .star-deck-title {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px; font-family: 'Playfair Display', serif;
  font-size: 17px; color: var(--purple);
}
#sec-starred .star-card {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-left: 4px solid var(--orange);
  border-radius: 10px;
  padding: 14px 18px; margin-bottom: 8px;
  display: grid; grid-template-columns: 1fr auto auto; gap: 12px;
  align-items: start;
}
#sec-starred .star-card .sc-q { font-size: 13px; color: var(--text); line-height: 1.5; }
#sec-starred .star-card .sc-cat { font-size: 10px; padding: 2px 8px; border-radius: 10px; background: var(--purple-bg); color: var(--purple); text-transform: uppercase; letter-spacing: 1px; height: fit-content; }
#sec-starred .star-card .sc-unstar { background: transparent; border: none; color: var(--text3); cursor: pointer; font-size: 16px; }
#sec-starred .star-card .sc-unstar:hover { color: var(--red); }
#sec-starred .star-empty { padding: 40px; text-align: center; color: var(--text3); font-size: 14px; }


/* ========== BATCH 4 : Active recall + Weakness routing + Snooze ========== */
/* Bouton Snooze sur chaque deck card de Due Today */
.due-decks-grid > div { position: relative; }
.deck-snooze-btn {
  position: absolute; top: 6px; right: 6px;
  background: var(--bg3); border: 1px solid var(--bg4); color: var(--text3);
  width: 24px; height: 24px; border-radius: 50%;
  font-size: 10px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .15s ease;
}
.deck-snooze-btn:hover { background: var(--orange-bg); color: var(--orange); border-color: var(--orange); }
.deck-snooze-btn.snoozed { background: var(--orange-bg); color: var(--orange); border-color: var(--orange); }

/* Weakness routing toast */
.weakness-toast {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%);
  background: var(--bg2); border: 1px solid var(--orange);
  padding: 14px 22px; border-radius: 12px;
  display: flex; align-items: center; gap: 14px;
  max-width: 560px; box-shadow: 0 8px 30px rgba(0,0,0,.4);
  z-index: 9998; font-size: 13px;
  animation: slideUp .3s ease;
}
@keyframes slideUp { from { transform: translate(-50%, 20px); opacity: 0; } to { transform: translate(-50%, 0); opacity: 1; } }
.weakness-toast .wt-icon { font-size: 22px; color: var(--orange); }
.weakness-toast .wt-text { flex: 1; color: var(--text); }
.weakness-toast .wt-link {
  background: var(--blue); color: var(--bg); border: none;
  padding: 6px 14px; border-radius: 8px; cursor: pointer; font-weight: 600;
}
.weakness-toast .wt-close {
  background: transparent; border: none; color: var(--text3); cursor: pointer; font-size: 18px;
}

/* Active recall : grise le bouton Show solution */
.btn-secondary[onclick*="reveal"] {
  opacity: .4; cursor: not-allowed; transition: opacity .2s ease;
}
.btn-secondary[onclick*="reveal"].unlocked {
  opacity: 1; cursor: pointer;
}
.active-recall-hint {
  font-size: 11px; color: var(--text3); margin-top: 8px; font-style: italic;
}


/* ========== BATCH 6 : Mobile responsive amélioré ========== */
@media (max-width: 900px) {
  body.has-header { padding-top: 48px; }
  .app-header { padding: 0 12px; gap: 10px; }
  .app-header .ah-logo { font-size: 14px; }
  .app-header .ah-focus-btn { display: none; }

  .due-hero { grid-template-columns: 1fr; gap: 12px; padding: 18px; text-align: center; }
  .due-hero-title { font-size: 22px; }
  .due-nav-btn { width: 100%; justify-content: center; }
  .due-progress-row { grid-template-columns: auto 1fr; gap: 12px; }
  .due-progress-row .due-today-btn { grid-column: 1 / -1; }
  .due-progress-row .due-progress-meta:nth-of-type(2) { display: none; }

  .due-mission-header { padding: 14px 16px; gap: 8px; }
  .due-mission-header .mh-icon { width: 32px; height: 32px; font-size: 16px; }
  .due-mission-body { padding: 12px 14px; }
  .due-task { padding: 10px 12px; gap: 10px; align-items: flex-start; flex-wrap: wrap; }
  .due-task .due-task-text { flex-basis: calc(100% - 36px); }
  .due-task-status { margin-left: 36px; }
  .due-task-actions { justify-content: flex-start; width: calc(100% - 36px); margin-left: 36px; }
  .due-task-link { font-size: 9px; padding: 3px 7px; }

  .due-decks-grid { grid-template-columns: 1fr; padding: 14px; }

  #dueDayFloatNav { padding: 6px 12px; bottom: 16px; }
  #dueDayFloatNav button { font-size: 16px; padding: 4px 8px; }

  /* Naef sections : enlève le margin hardcodé */
  .alain-session-section { margin-left: 0 !important; padding: 20px 12px 60px !important; max-width: 100% !important; }
  .alain-session-section * { min-width: 0; overflow-wrap: anywhere; }

  /* Open economy tabs : scroll horizontal */
  .tabs { overflow-x: auto; white-space: nowrap; padding-bottom: 4px; }
  .tab-btn { flex-shrink: 0; }

  /* Grids dans Naef : 1 colonne sur mobile */
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns:repeat(3"],
  [style*="grid-template-columns:repeat(4"] { grid-template-columns: 1fr !important; }

  /* Tableaux scrollables */
  table { display: block; overflow-x: auto; }

  /* Hero stats stacked */
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 8px; }

  /* Settings grid */
  #sec-settings .due-note-card > div[style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }
}

@media (max-width: 600px) {
  .due-hero-title { font-size: 18px; }
  .due-progress-row { grid-template-columns: 1fr; text-align: center; }
  .app-header .ah-stat:nth-of-type(1) { display: none; }  /* cache streak sur très petit */
  .hero-stats { grid-template-columns: 1fr; }
}

/* === Skeleton on showSection (wiring auto) === */
.section { transition: opacity .2s ease; }
.section:not(.active) { display: none; }


/* === FIX : Focus mode wins over sidebar-hidden via spécificité === */
body.focus-mode.sidebar-hidden .main,
body.focus-mode .main {
  margin: 0 auto !important;
  padding: 40px 60px 80px !important;
  max-width: 820px !important;
  width: 100% !important;
}
body.focus-mode.sidebar-hidden .section,
body.focus-mode .section {
  margin: 0 auto !important;
  padding: 0 !important;
  max-width: 820px !important;
}
body.focus-mode.sidebar-hidden .alain-session-section,
body.focus-mode .alain-session-section {
  margin: 0 auto !important;
  padding: 40px 60px 80px !important;
  max-width: 820px !important;
}
body.focus-mode #sec-home,
body.focus-mode .section#sec-home {
  max-width: 820px !important;
}


/* ========== CALENDAR PREMIUM REDESIGN ========== */

/* Phase headers : gradient + icon */
.cal-week-label {
  font-family: 'Playfair Display', serif !important;
  font-size: 20px !important;
  margin: 32px 0 16px !important;
  padding: 16px 22px !important;
  border-bottom: none !important;
  border-left: 4px solid var(--green);
  background: linear-gradient(90deg, rgba(78,203,113,.10), transparent);
  border-radius: 0 10px 10px 0;
  position: relative;
}
.cal-week-label[data-phase="b"] { border-left-color: var(--blue); background: linear-gradient(90deg, rgba(91,155,245,.10), transparent); }
.cal-week-label[data-phase="c"] { border-left-color: var(--purple); background: linear-gradient(90deg, rgba(176,126,245,.10), transparent); }

/* Grid avec espacement plus généreux */
.cal-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)) !important;
  gap: 14px !important;
  margin-bottom: 16px !important;
}

/* Day card refonte */
.cal-day {
  background: linear-gradient(180deg, var(--bg2), var(--bg)) !important;
  border: 1px solid var(--bg4) !important;
  border-radius: 14px !important;
  padding: 14px !important;
  position: relative;
  cursor: pointer;
  transition: all .2s ease !important;
  min-height: 200px !important;
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden;
}
.cal-day::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--bg4);
  transition: all .25s ease;
}
.cal-day[data-day]:nth-child(-n+7)::before { background: linear-gradient(90deg, var(--green), var(--green2, var(--blue))); }
.cal-grid:nth-of-type(3) .cal-day::before { background: linear-gradient(90deg, var(--blue), var(--purple)); }
.cal-grid:nth-of-type(5) .cal-day::before { background: linear-gradient(90deg, var(--purple), var(--orange)); }

.cal-day:hover {
  transform: translateY(-3px);
  border-color: var(--purple) !important;
  box-shadow: 0 10px 28px rgba(176,126,245,.25);
}
.cal-day:hover::before { height: 5px; }

.cal-day.today {
  border-color: var(--blue) !important;
  box-shadow: 0 0 0 2px rgba(91,155,245,.4), 0 10px 30px rgba(91,155,245,.15) !important;
  background: linear-gradient(180deg, var(--blue-bg), var(--bg2)) !important;
}
.cal-day.today::after {
  content: 'AUJOURD\'HUI';
  position: absolute; top: 8px; right: 8px;
  background: var(--blue); color: var(--bg);
  font-size: 9px; font-weight: 700;
  padding: 2px 8px; border-radius: 10px;
  letter-spacing: 1px;
}

.cal-day.past { opacity: .55 !important; }
.cal-day.past:hover { opacity: 1; }

.cal-day.done {
  background: linear-gradient(180deg, rgba(78,203,113,.15), var(--bg2)) !important;
  border-color: var(--green) !important;
}
.cal-day.done::before { background: var(--green) !important; height: 4px; }
.cal-day.done .day-theme { color: var(--green) !important; }

.cal-day .day-header {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 4px;
}
.cal-day .day-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 700;
  color: var(--purple);
  background: rgba(176,126,245,.12);
  padding: 3px 8px; border-radius: 6px;
}
.cal-day .day-date {
  font-size: 10px; color: var(--text3);
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase; letter-spacing: 1px;
}
.cal-day .day-check {
  width: 20px !important; height: 20px !important;
  cursor: pointer; accent-color: var(--green);
}

.cal-day .day-theme {
  font-weight: 600; font-size: 13px;
  color: var(--text); line-height: 1.4;
  margin: 2px 0;
}
.cal-day .day-tasks {
  list-style: none; padding: 0; margin: 0;
  font-size: 11px; color: var(--text2);
  line-height: 1.6;
  flex: 1;
}
.cal-day .day-tasks li { padding: 1px 0; }
.cal-day .day-tasks li::before { content: "• "; color: var(--purple); font-weight: bold; }
.cal-day .day-duration {
  font-size: 10px; color: var(--text3);
  font-style: italic;
  border-top: 1px dashed var(--bg4);
  padding-top: 6px;
}
.cal-day .day-link {
  display: inline-block;
  font-size: 10px; color: var(--blue);
  padding: 4px 10px;
  background: var(--blue-bg);
  border-radius: 12px;
  align-self: flex-start;
  cursor: pointer;
  transition: all .15s ease;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
}
.cal-day .day-link:hover { background: var(--blue); color: var(--bg); }

/* Mini progress indicator dans le coin (% tasks done from Due Today) */
.cal-day .day-mini-progress {
  position: absolute; bottom: 10px; right: 10px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700;
  color: var(--text3);
  background: var(--bg);
  border-radius: 50%;
  border: 2px solid var(--bg4);
  font-family: 'JetBrains Mono', monospace;
  transition: all .2s ease;
}
.cal-day .day-mini-progress.partial { color: var(--orange); border-color: var(--orange); }
.cal-day .day-mini-progress.full { color: var(--green); border-color: var(--green); background: var(--green-bg); }

/* Sync indicator au-dessus */
.cal-sync-info {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  background: linear-gradient(135deg, rgba(78,203,113,.08), rgba(91,155,245,.05));
  border-left: 3px solid var(--green);
  border-radius: 0 8px 8px 0;
  margin-bottom: 16px;
  font-size: 12px; color: var(--text2);
}


/* === Day status indicator (remplace checkbox) === */
.day-status {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%;
  font-size: 14px; font-weight: 700;
  background: var(--bg);
  border: 2px solid var(--bg4);
  color: var(--text3);
  transition: all .2s ease;
}
.cal-day.done .day-status {
  background: var(--green); color: var(--bg); border-color: var(--green);
}
.cal-day.done .day-status::before { content: '✓'; }
.cal-day.done .day-status { font-size: 0; }
.cal-day.done .day-status::before { font-size: 13px; }
.cal-day.today .day-status { border-color: var(--blue); color: var(--blue); }


/* ========== WAVE 1 : Friction-zero + Focus + Habit ========== */

/* === A2 : Big Start Session button === */
.start-session-hero {
  background: linear-gradient(135deg, #4ecb71 0%, #5b9bf5 50%, #b07ef5 100%);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.start-session-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,.15), transparent 60%);
  pointer-events: none;
}
.start-session-hero .sh-text { z-index: 1; }
.start-session-hero .sh-title {
  font-family: 'Playfair Display', serif;
  font-size: 28px; color: white; font-weight: 700;
  margin: 0 0 6px;
}
.start-session-hero .sh-sub { color: rgba(255,255,255,.85); font-size: 14px; }
.start-session-hero .sh-actions { display: flex; gap: 10px; flex-direction: column; z-index: 1; }
.start-session-btn {
  background: rgba(255,255,255,.95); color: #0e0f13;
  border: none; padding: 16px 28px;
  border-radius: 14px; font-size: 16px; font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  transition: all .2s ease;
  font-family: inherit;
}
.start-session-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,.4); }
.start-session-btn-mini {
  background: rgba(0,0,0,.3); color: white;
  border: 1px solid rgba(255,255,255,.3); padding: 10px 18px;
  border-radius: 10px; font-size: 12px;
  cursor: pointer; font-weight: 600;
}
.start-session-btn-mini:hover { background: rgba(0,0,0,.5); }

/* === B1 : Pomodoro timer === */
.pomodoro-bar {
  position: fixed; top: 64px; right: 16px;
  z-index: 9000;
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 12px;
  padding: 8px 12px;
  display: none; align-items: center; gap: 10px;
  font-size: 13px;
  box-shadow: 0 6px 20px rgba(0,0,0,.5), 0 0 0 1px var(--purple);
  transition: all .2s ease;
  cursor: default;
  user-select: none;
}
.pomodoro-bar.visible { display: flex; }
.pomodoro-bar.break {
  border-color: var(--green);
  box-shadow: 0 6px 20px rgba(0,0,0,.5), 0 0 0 1px var(--green);
  background: linear-gradient(135deg, var(--bg2), var(--green-bg));
}
.pomodoro-bar .pb-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 17px; font-weight: 700;
  color: var(--purple);
  min-width: 52px; text-align: center;
}
.pomodoro-bar.break .pb-time { color: var(--green); }
.pomodoro-bar .pb-label {
  color: var(--text2); font-size: 9px;
  text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 600;
}
.pomodoro-bar button {
  background: transparent; border: 1px solid var(--bg4);
  color: var(--text2); padding: 3px 8px;
  border-radius: 6px; cursor: pointer; font-size: 11px;
  transition: all .15s ease;
}
.pomodoro-bar button:hover { color: var(--text); border-color: var(--purple); transform: scale(1.1); }

/* Position adaptative quand pas de header (focus mode) */
body.focus-mode .pomodoro-bar { top: 16px; right: 16px; }

/* Mobile : plus compact */
@media (max-width: 700px) {
  .pomodoro-bar { padding: 6px 10px; gap: 8px; right: 8px; top: 56px; }
  .pomodoro-bar .pb-time { font-size: 14px; min-width: 44px; }
  .pomodoro-bar .pb-label { display: none; }
}

/* Micro-animation pulse quand session active */
.pomodoro-bar.visible::before {
  content: ''; position: absolute; top: -2px; right: -2px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--purple);
  animation: pulseDot 2s infinite;
}
.pomodoro-bar.break.visible::before { background: var(--green); }
@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: .5; }
}

/* === C1 : Streak warning modal === */
.streak-warning-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.8);
  display: none; align-items: center; justify-content: center;
  z-index: 10000;
}
.streak-warning-modal.visible { display: flex; }
.streak-warning-modal .swm-content {
  background: var(--bg2); border: 2px solid var(--red);
  border-radius: 16px; padding: 28px 36px; max-width: 480px;
  text-align: center;
}
.streak-warning-modal .swm-icon { font-size: 48px; margin-bottom: 12px; }
.streak-warning-modal .swm-title { color: var(--red); font-size: 22px; font-weight: 700; margin-bottom: 10px; font-family: 'Playfair Display', serif; }
.streak-warning-modal .swm-text { color: var(--text); font-size: 14px; line-height: 1.6; margin-bottom: 20px; }
.streak-warning-modal .swm-streak {
  font-size: 56px; font-weight: 700;
  background: linear-gradient(135deg, var(--orange), var(--red));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  font-family: 'JetBrains Mono', monospace;
}
.streak-warning-modal .swm-actions { display: flex; gap: 10px; justify-content: center; }
.streak-warning-modal button { padding: 12px 22px; border-radius: 10px; font-weight: 600; cursor: pointer; border: none; }
.streak-warning-modal .swm-go { background: var(--green); color: var(--bg); }
.streak-warning-modal .swm-skip { background: transparent; color: var(--text3); border: 1px solid var(--bg4); }

/* === D2 : Weekly stats card === */
.weekly-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}
.weekly-stat-card {
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}
.weekly-stat-card .wsc-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px; font-weight: 700;
  margin-bottom: 4px;
}
.weekly-stat-card .wsc-label {
  font-size: 11px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 1.5px;
}
.weekly-stat-card.streak .wsc-num { color: var(--orange); }
.weekly-stat-card.cards .wsc-num { color: var(--blue); }
.weekly-stat-card.minutes .wsc-num { color: var(--purple); }
.weekly-stat-card.consistency .wsc-num { color: var(--green); }


/* ========== WAVE 2 : Onboarding + Check-in + Commit chart + Anti-scroll ========== */

/* === A4 + C3 : Modal générique === */
.app-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.85);
  display: none; align-items: center; justify-content: center;
  z-index: 10001; backdrop-filter: blur(6px);
}
.app-modal.visible { display: flex; }
.app-modal .am-content {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: 18px; padding: 32px 40px; max-width: 540px;
  width: 90%; max-height: 88vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.app-modal .am-step { display: none; }
.app-modal .am-step.active { display: block; animation: fadeIn .3s ease; }
.app-modal .am-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px; color: var(--purple); margin: 0 0 8px;
}
.app-modal .am-sub { color: var(--text2); font-size: 14px; margin-bottom: 22px; line-height: 1.6; }
.app-modal .am-input {
  width: 100%; padding: 12px 14px;
  background: var(--bg); border: 1px solid var(--bg4); color: var(--text);
  border-radius: 10px; font-size: 14px; margin-bottom: 14px;
}
.app-modal .am-input:focus { outline: none; border-color: var(--purple); }
.app-modal .am-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin-bottom: 18px; }
.app-modal .am-option {
  padding: 14px; background: var(--bg); border: 2px solid var(--bg4);
  border-radius: 12px; cursor: pointer; text-align: center;
  transition: all .15s ease;
}
.app-modal .am-option:hover { border-color: var(--purple); }
.app-modal .am-option.selected { border-color: var(--purple); background: var(--purple-bg); color: var(--purple); font-weight: 600; }
.app-modal .am-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }
.app-modal .am-btn {
  padding: 12px 22px; border-radius: 10px; border: none;
  cursor: pointer; font-weight: 600; font-size: 14px;
}
.app-modal .am-btn-primary { background: var(--purple); color: var(--bg); }
.app-modal .am-btn-secondary { background: transparent; color: var(--text2); border: 1px solid var(--bg4); }
.app-modal .am-steps-indicator { display: flex; gap: 6px; margin-bottom: 22px; }
.app-modal .am-steps-indicator span {
  flex: 1; height: 4px; background: var(--bg4); border-radius: 2px;
}
.app-modal .am-steps-indicator span.active { background: var(--purple); }
.app-modal .am-steps-indicator span.done { background: var(--green); }



/* === B3 : Pomodoro actif, navigation libre === */
body.session-active .sidebar::after {
  content: '⏱️ Pomodoro actif — le chrono continue pendant la navigation.';
  position: sticky; bottom: 0;
  display: block; padding: 10px 14px;
  background: var(--blue-bg); color: var(--blue);
  font-size: 11px; text-align: center;
  border-top: 1px solid var(--blue);
}


/* ========== WAVE 3 : Milestones + Grace + Block reminder ========== */

/* === C4 : Milestone celebration overlay === */
.milestone-celebration {
  position: fixed; inset: 0; pointer-events: none;
  display: none; z-index: 10000;
  background: radial-gradient(circle at center, rgba(176,126,245,.15), transparent 60%);
}
.milestone-celebration.visible { display: flex; align-items: center; justify-content: center; pointer-events: auto; }
.milestone-celebration .mc-card {
  background: linear-gradient(135deg, var(--bg2), var(--bg));
  border: 2px solid var(--purple); border-radius: 24px;
  padding: 40px 60px; text-align: center;
  max-width: 500px;
  box-shadow: 0 30px 80px rgba(176,126,245,.4);
  animation: bounceIn .6s ease;
}
@keyframes bounceIn {
  0% { transform: scale(.3); opacity: 0; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(1); }
}
.milestone-celebration .mc-icon { font-size: 80px; margin-bottom: 16px; }
.milestone-celebration .mc-title {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  background: linear-gradient(135deg, var(--green), var(--blue), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}
.milestone-celebration .mc-text { color: var(--text2); font-size: 15px; line-height: 1.6; margin-bottom: 24px; }
.milestone-celebration .mc-btn {
  background: var(--purple); color: var(--bg); border: none;
  padding: 14px 32px; border-radius: 12px;
  font-size: 14px; font-weight: 700; cursor: pointer;
}

/* Confetti dots */
.confetti { position: fixed; pointer-events: none; z-index: 9999; }
.confetti-dot {
  position: absolute; width: 10px; height: 10px;
  border-radius: 2px;
  animation: confettiFall 3s linear forwards;
}
@keyframes confettiFall {
  0% { transform: translateY(-20vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(120vh) rotate(720deg); opacity: 0; }
}

/* === B4 : Block reminder banner === */
.block-reminder-banner {
  position: fixed; top: 48px; right: 16px;
  background: linear-gradient(135deg, var(--orange-bg), var(--bg2));
  border: 1px solid var(--orange);
  border-radius: 12px;
  padding: 12px 16px;
  display: none; align-items: center; gap: 10px;
  z-index: 95; max-width: 380px;
  font-size: 12px; color: var(--text);
  animation: slideInRight .3s ease;
  box-shadow: 0 6px 20px rgba(0,0,0,.4);
}
.block-reminder-banner.visible { display: flex; }
@keyframes slideInRight {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.block-reminder-banner .brb-close {
  background: transparent; border: none; color: var(--text3);
  cursor: pointer; font-size: 16px;
}

/* === C5 : Grace day badge === */
.grace-day-badge {
  display: inline-block; padding: 2px 8px;
  background: rgba(245,166,35,.2); color: var(--orange);
  border-radius: 10px; font-size: 10px;
  font-weight: 700; margin-left: 6px;
}


/* ========== FINAL BATCH 1 : Autopilot + Bocconi ========== */

/* Bocconi target banner sur Dashboard */
.bocconi-target {
  display: flex; align-items: center; gap: 18px;
  padding: 16px 22px;
  background: linear-gradient(135deg, rgba(176,126,245,.12), rgba(220,38,38,.06));
  border: 1px solid rgba(220,38,38,.3);
  border-left: 4px solid #dc2626;
  border-radius: 14px;
  margin-bottom: 18px;
}
.bocconi-target .bt-icon { font-size: 28px; }
.bocconi-target .bt-content { flex: 1; }
.bocconi-target .bt-title { font-weight: 700; color: #dc2626; font-size: 14px; letter-spacing: 0.5px; }
.bocconi-target .bt-sub { font-size: 12px; color: var(--text2); margin-top: 2px; }
.bocconi-target .bt-bar { width: 200px; height: 8px; background: var(--bg4); border-radius: 4px; overflow: hidden; }
.bocconi-target .bt-fill { height: 100%; background: linear-gradient(90deg, #dc2626, #b07ef5, #4ecb71); transition: width .4s ease; }
.bocconi-target .bt-pct { font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--text); font-size: 16px; min-width: 50px; text-align: right; }

/* Header Bocconi badge */
.app-header .ah-bocconi {
  display: flex; align-items: center; gap: 4px;
  color: #dc2626;
  font-weight: 700;
  background: rgba(220,38,38,.1);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
}

/* Autopilot button = remplace Big Start avec recommandation contextuelle */
.autopilot-card {
  background: linear-gradient(135deg, #5b9bf5 0%, #b07ef5 50%, #4ecb71 100%);
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  color: white;
}
.autopilot-card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,.2), transparent 60%);
  pointer-events: none;
}
.autopilot-card .ac-label {
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  font-weight: 700; opacity: .85; margin-bottom: 4px;
  z-index: 1; position: relative;
}
.autopilot-card .ac-suggestion {
  font-family: 'Playfair Display', serif;
  font-size: 24px; font-weight: 700; margin-bottom: 4px;
  z-index: 1; position: relative;
}
.autopilot-card .ac-reason {
  font-size: 13px; opacity: .9; margin-bottom: 20px; line-height: 1.5;
  z-index: 1; position: relative;
}
.autopilot-card .ac-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  z-index: 1; position: relative;
}
.autopilot-card .ac-btn {
  background: rgba(255,255,255,.95); color: #0e0f13;
  border: none; padding: 14px 22px;
  border-radius: 12px; font-size: 14px; font-weight: 700;
  cursor: pointer; display: flex; align-items: center; gap: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
  transition: all .15s ease;
}
.autopilot-card .ac-btn:hover { transform: translateY(-2px); }
.autopilot-card .ac-btn-secondary {
  background: rgba(0,0,0,.25); color: white;
  border: 1px solid rgba(255,255,255,.3);
}


/* ========== FINAL BATCH 2 : Session recap + Real tracking ========== */
.session-recap-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.85);
  display: none; align-items: center; justify-content: center;
  z-index: 10002; backdrop-filter: blur(8px);
}
.session-recap-modal.visible { display: flex; }
.session-recap-modal .srm-content {
  background: linear-gradient(180deg, var(--bg2), var(--bg));
  border: 2px solid var(--purple);
  border-radius: 20px;
  padding: 36px 44px;
  max-width: 560px; width: 90%;
  box-shadow: 0 25px 80px rgba(176,126,245,.4);
  text-align: center;
}
.session-recap-modal .srm-icon { font-size: 64px; margin-bottom: 12px; }
.session-recap-modal .srm-title {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  background: linear-gradient(135deg, var(--green), var(--blue), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 24px;
}
.session-recap-modal .srm-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 14px; margin-bottom: 24px;
}
.session-recap-modal .srm-stat {
  background: var(--bg); border-radius: 12px; padding: 14px;
}
.session-recap-modal .srm-stat .srm-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 26px; font-weight: 700; color: var(--purple);
  margin-bottom: 4px;
}
.session-recap-modal .srm-stat .srm-lbl {
  font-size: 10px; text-transform: uppercase; letter-spacing: 1px;
  color: var(--text3);
}
.session-recap-modal .srm-message {
  color: var(--text); font-size: 14px; line-height: 1.6; margin-bottom: 22px;
}
.session-recap-modal .srm-next {
  background: var(--purple-bg); color: var(--purple);
  padding: 12px 18px; border-radius: 10px;
  font-size: 13px; margin-bottom: 18px;
  border-left: 3px solid var(--purple); text-align: left;
}
.session-recap-modal .srm-actions { display: flex; gap: 10px; justify-content: center; }
.session-recap-modal .srm-btn {
  padding: 12px 22px; border-radius: 10px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  border: none;
}
.session-recap-modal .srm-btn-primary { background: var(--purple); color: var(--bg); }
.session-recap-modal .srm-btn-secondary { background: transparent; color: var(--text2); border: 1px solid var(--bg4); }


/* ========== FINAL BATCH 3 : Pre-exam mode + Cmd+K ========== */

/* Pre-exam mode banner */
.preexam-banner {
  display: none; align-items: center; gap: 14px;
  padding: 16px 22px;
  background: linear-gradient(90deg, rgba(220,38,38,.15), rgba(245,166,35,.08));
  border: 1px solid var(--red);
  border-radius: 14px; margin-bottom: 20px;
  animation: pulse 2s infinite;
}
.preexam-banner.visible { display: flex; }
.preexam-banner .pb-icon { font-size: 32px; }
.preexam-banner .pb-content { flex: 1; }
.preexam-banner .pb-title { font-family: 'Playfair Display', serif; font-size: 18px; color: var(--red); font-weight: 700; }
.preexam-banner .pb-sub { font-size: 13px; color: var(--text2); margin-top: 4px; }
.preexam-banner .pb-days {
  font-family: 'JetBrains Mono', monospace;
  font-size: 32px; font-weight: 700; color: var(--red);
}

/* Sidebar reorder in pre-exam mode */
body.preexam-mode .nav-link[data-section="formulas"],
body.preexam-mode .nav-link[data-section="variables"],
body.preexam-mode .nav-link[data-section="traps"],
body.preexam-mode .nav-link[data-section="exam-eve"],
body.preexam-mode .nav-link[data-section="mock-exam"],
body.preexam-mode .nav-link[data-section="exam-sim"] {
  background: linear-gradient(90deg, rgba(220,38,38,.15), transparent);
  border-left-color: var(--red);
}
body.preexam-mode .nav-link[data-section="gdp"],
body.preexam-mode .nav-link[data-section="inflation"],
body.preexam-mode .nav-link[data-section="unemployment"],
body.preexam-mode .nav-link[data-section="interest"],
body.preexam-mode .nav-link[data-section="keynesian"],
body.preexam-mode .nav-link[data-section="growth"],
body.preexam-mode .nav-link[data-section="climate"] {
  opacity: .35;
}

/* === Cmd+K Search modal === */
.cmdk-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.75);
  display: none; align-items: flex-start; justify-content: center;
  padding-top: 12vh; z-index: 10003;
  backdrop-filter: blur(6px);
}
.cmdk-modal.visible { display: flex; }
.cmdk-modal .cmdk-content {
  background: var(--bg2);
  border: 1px solid var(--bg4);
  border-radius: 14px;
  width: 90%; max-width: 600px;
  max-height: 70vh;
  overflow: hidden;
  display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.cmdk-modal input.cmdk-input {
  background: transparent; border: none;
  color: var(--text); padding: 18px 22px;
  font-size: 16px; border-bottom: 1px solid var(--bg4);
  width: 100%;
  font-family: inherit;
}
.cmdk-modal input.cmdk-input:focus { outline: none; }
.cmdk-modal .cmdk-results {
  flex: 1; overflow-y: auto;
  padding: 6px;
}
.cmdk-modal .cmdk-empty {
  padding: 32px; text-align: center; color: var(--text3); font-size: 13px;
}
.cmdk-modal .cmdk-result {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; border-radius: 8px;
  cursor: pointer; transition: background .1s ease;
}
.cmdk-modal .cmdk-result:hover, .cmdk-modal .cmdk-result.active {
  background: var(--purple-bg);
}
.cmdk-modal .cmdk-result .cmdk-icon { font-size: 16px; width: 22px; text-align: center; }
.cmdk-modal .cmdk-result .cmdk-title { flex: 1; color: var(--text); font-size: 13px; }
.cmdk-modal .cmdk-result .cmdk-type {
  font-size: 10px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 1px;
  background: var(--bg3); padding: 2px 8px; border-radius: 10px;
}
.cmdk-modal .cmdk-footer {
  padding: 10px 16px; border-top: 1px solid var(--bg4);
  font-size: 11px; color: var(--text3);
  display: flex; gap: 18px;
}
.cmdk-modal .cmdk-footer kbd {
  background: var(--bg); padding: 2px 6px;
  border-radius: 3px; font-family: 'JetBrains Mono', monospace;
  font-size: 10px; border: 1px solid var(--bg4);
}

/* === COMMIT CHART REDESIGN (GitHub-style) === */
.commit-chart-card {
  background: var(--bg2); border: 1px solid var(--bg4);
  border-radius: 14px; padding: 22px; margin-bottom: 22px;
  overflow-x: auto;
}
.commit-chart-card .cc-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.commit-chart-card .cc-title {
  font-family: 'Playfair Display', serif; font-size: 17px; color: var(--text);
}
.commit-chart-card .cc-stats {
  font-size: 12px; color: var(--text3); font-family: 'JetBrains Mono', monospace;
}

.commit-wrapper {
  display: flex; gap: 6px;
  justify-content: center;
}
.commit-day-labels {
  display: grid; grid-template-rows: repeat(7, 1fr);
  gap: 3px; font-size: 9px; color: var(--text3);
  font-family: 'JetBrains Mono', monospace;
  align-items: center;
  width: 18px;
}
.commit-day-labels span { line-height: 14px; height: 14px; }

.commit-grid {
  display: grid !important;
  grid-template-columns: repeat(13, 14px) !important;
  grid-template-rows: repeat(7, 14px) !important;
  grid-auto-flow: column !important;
  gap: 3px !important;
  margin: 0 !important;
}
.commit-cell {
  width: 14px !important; height: 14px !important;
  background: var(--bg4) !important;
  border-radius: 3px !important;
  border: 1px solid transparent;
  position: relative;
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease;
  aspect-ratio: unset !important;
}
.commit-cell:hover,
.commit-cell:focus-visible {
  transform: scale(1.4);
  border-color: var(--text);
  z-index: 5;
  outline: none;
}
.commit-cell.l1 { background: rgba(78,203,113,.30) !important; }
.commit-cell.l2 { background: rgba(78,203,113,.55) !important; }
.commit-cell.l3 { background: rgba(78,203,113,.80) !important; }
.commit-cell.l4 { background: var(--green) !important; }
.commit-cell.today {
  border-color: var(--blue) !important;
  box-shadow: 0 0 0 1px var(--blue);
}

/* Custom tooltip qui remplace title browser */
.commit-cell::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  color: var(--text);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 10px;
  white-space: nowrap;
  font-family: 'JetBrains Mono', monospace;
  border: 1px solid var(--bg4);
  pointer-events: none;
  opacity: 0;
  transition: opacity .1s ease;
  z-index: 10;
}
.commit-cell:hover::after { opacity: 1; }

.commit-legend {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--text3);
  justify-content: flex-end;
  margin-top: 12px;
}
.commit-legend .commit-cell {
  width: 11px !important; height: 11px !important;
  cursor: default;
}
.commit-legend .commit-cell:hover { transform: none; }
.commit-legend .commit-cell::after { display: none; }

.commit-day-modal .am-content {
  max-width: 920px;
}
.cdd-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}
.cdd-stat {
  background: var(--bg);
  border: 1px solid var(--bg4);
  border-radius: 10px;
  padding: 12px;
  min-width: 0;
}
.cdd-stat strong {
  display: block;
  color: var(--purple);
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  line-height: 1.1;
}
.cdd-stat span {
  display: block;
  margin-top: 6px;
  color: var(--text3);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.cdd-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 14px;
}
.cdd-block {
  background: var(--bg);
  border: 1px solid var(--bg4);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 14px;
}
.cdd-block h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 15px;
  font-family: 'Playfair Display', serif;
}
.cdd-row,
.cdd-card-row,
.cdd-timeline-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 9px 0;
  border-top: 1px solid var(--bg3);
}
.cdd-row:first-child,
.cdd-card-row:first-child,
.cdd-timeline-item:first-child {
  border-top: 0;
}
.cdd-row strong,
.cdd-card-row strong,
.cdd-timeline-item strong {
  color: var(--text);
  font-size: 13px;
}
.cdd-row span,
.cdd-card-row span,
.cdd-timeline-item span {
  display: block;
  color: var(--text3);
  font-size: 11px;
  margin-top: 3px;
}
.cdd-row em,
.cdd-timeline-item em {
  color: var(--blue);
  font-style: normal;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}
.cdd-card-row {
  grid-template-columns: 54px minmax(70px, auto) 58px minmax(0, 1fr);
  align-items: start;
}
.cdd-card-row span {
  margin-top: 1px;
  font-family: 'JetBrains Mono', monospace;
}
.cdd-card-row em {
  justify-self: start;
  color: var(--green);
  font-style: normal;
  font-size: 11px;
  border: 1px solid rgba(78,203,113,.35);
  border-radius: 999px;
  padding: 2px 7px;
}
.cdd-card-row em.again {
  color: var(--red);
  border-color: rgba(245,91,106,.35);
}
.cdd-card-row p {
  margin: 0;
  color: var(--text2);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.cdd-section-head {
  display: flex;
  gap: 10px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.cdd-section-head h4 {
  margin: 0;
  color: var(--text);
  font-size: 13px;
}
.cdd-pill {
  color: var(--text3);
  border: 1px solid var(--bg4);
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 10px;
  white-space: nowrap;
}
.cdd-pill.ok {
  color: var(--green);
  border-color: rgba(78,203,113,.35);
}
.cdd-task-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.cdd-task-list li {
  display: flex;
  gap: 8px;
  padding: 7px 0;
  color: var(--text2);
  font-size: 12px;
  border-top: 1px solid var(--bg3);
}
.cdd-task-list li.done {
  color: var(--green);
}
.cdd-note {
  margin-top: 10px;
  color: var(--text2);
  font-size: 12px;
  line-height: 1.5;
}
.cdd-empty {
  color: var(--text3);
  font-size: 12px;
  line-height: 1.5;
  padding: 10px 0;
}
.cdd-subtitle {
  margin: 14px 0 6px;
  color: var(--text3);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.cdd-timeline {
  max-height: 220px;
  overflow: auto;
}
.cdd-timeline-item {
  grid-template-columns: 94px minmax(0, 1fr) auto;
}

@media (max-width: 900px) {
  .cdd-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cdd-grid { grid-template-columns: 1fr; }
  .cdd-card-row { grid-template-columns: 48px minmax(0, 1fr); }
  .cdd-card-row em { grid-column: 2; }
  .cdd-card-row p { grid-column: 1 / -1; }
  .cdd-timeline-item { grid-template-columns: 1fr; gap: 2px; }
}


/* === Recall test card (J-1 quiz) + restore yesterday === */
.recall-card {
  background: linear-gradient(135deg, rgba(245,166,35,.08), rgba(176,126,245,.06));
  border: 1px solid rgba(245,166,35,.3);
  border-left: 4px solid var(--orange);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 16px;
}
.recall-card .rc-icon { font-size: 32px; }
.recall-card .rc-body { flex: 1; }
.recall-card .rc-title { font-weight: 700; color: var(--orange); font-size: 14px; margin-bottom: 2px; }
.recall-card .rc-sub { font-size: 12px; color: var(--text2); }
.recall-card .rc-btn {
  background: var(--orange); color: var(--bg);
  border: none; padding: 10px 18px;
  border-radius: 10px; cursor: pointer;
  font-weight: 600; font-size: 13px;
}

.recall-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.88);
  display: none; align-items: center; justify-content: center;
  z-index: 10005; backdrop-filter: blur(6px);
}
.recall-modal.visible { display: flex; }
.recall-modal .rm-content {
  background: var(--bg2); border: 1px solid var(--orange);
  border-radius: 18px; padding: 32px 40px;
  max-width: 600px; width: 90%; max-height: 88vh; overflow-y: auto;
}
.recall-modal .rm-title { font-family: 'Playfair Display', serif; font-size: 22px; color: var(--orange); margin-bottom: 8px; }
.recall-modal .rm-progress { font-size: 12px; color: var(--text3); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 14px; }
.recall-modal .rm-q { font-size: 16px; color: var(--text); margin-bottom: 14px; line-height: 1.5; }
.recall-modal .rm-a {
  background: var(--bg); padding: 14px 18px;
  border-radius: 10px; font-size: 14px; color: var(--text2);
  border-left: 3px solid var(--green); margin-bottom: 16px;
  display: none;
}
.recall-modal .rm-a.visible { display: block; }
.recall-modal .rm-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.recall-modal .rm-btn {
  padding: 10px 18px; border-radius: 8px; border: none;
  cursor: pointer; font-size: 13px; font-weight: 600;
}
.recall-modal .rm-btn-reveal { background: var(--purple); color: var(--bg); }
.recall-modal .rm-btn-known { background: var(--green); color: var(--bg); }
.recall-modal .rm-btn-forgot { background: var(--red); color: var(--bg); }
.recall-modal .rm-btn-close { background: transparent; color: var(--text3); border: 1px solid var(--bg4); }