/* ======= Curriculum IA ======= */

/* Reading progress bar */
.reading-progress {
  position: fixed; top: 0; left: 0; height: 2px;
  background: var(--accent); z-index: 60;
  width: 0; transition: width 0.1s linear;
}

/* Hero override */
.curriculum-hero { padding: 100px 0 80px; }
.curriculum-hero h1 { margin-bottom: 24px; max-width: 18ch; }
.curriculum-hero .lead { margin-bottom: 36px; border-left: 2px solid var(--accent); padding-left: 20px; }

/* Search */
.search-wrap {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--ink); background: var(--paper);
  max-width: 680px; border-radius: 2px;
  position: relative;
}
.search-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,77,28,0.15); }
.search-icon { padding: 0 16px 0 20px; font-size: 1.25rem; color: var(--mono-dim); flex-shrink: 0; }
.search-input {
  flex: 1; border: none; outline: none; background: transparent;
  padding: 20px 0; font-family: var(--font-serif); font-size: 1.125rem;
  font-style: italic; color: var(--ink);
}
.search-input::placeholder { color: var(--mono-dim); opacity: 0.6; }
.search-kbd {
  font-family: var(--font-mono); font-size: 10px; padding: 4px 8px;
  border: 1px solid var(--rule); border-radius: 2px; color: var(--mono-dim);
  margin-right: 16px; background: var(--paper-2); flex-shrink: 0;
}
.search-meta {
  margin-top: 12px; font-family: var(--font-mono); font-size: 11px;
  color: var(--mono-dim); text-transform: uppercase; letter-spacing: 0.06em;
  min-height: 1.2em;
}

/* Barre filtres sticky */
.filter-bar {
  position: sticky; top: 56px; z-index: 40;
  background: var(--paper); border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.filter-bar__inner {
  display: flex; gap: 32px; align-items: center; flex-wrap: wrap;
  padding: 12px var(--gutter);
}
.filter-group { display: flex; align-items: center; gap: 12px; min-width: 0; }
.filter-group__label {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--mono-dim); flex-shrink: 0;
}
.filter-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  padding: 6px 12px; background: var(--paper); border: 1px solid var(--ink);
  border-radius: 2px; font-family: var(--font-mono); font-size: 10px;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--ink); cursor: pointer;
  transition: all 0.2s var(--ease); white-space: nowrap;
}
.chip:hover { background: var(--accent-wash); }
.chip--active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip--active:hover { background: var(--ink); }
.chip__count { font-size: 9px; opacity: 0.6; margin-left: 4px; }
.filter-reset {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--accent-text); background: none; border: none;
  cursor: pointer; padding: 4px 8px; margin-left: auto;
}
.filter-reset:hover { color: var(--ink); }

/* Zone apprentissage */
.curriculum { padding: 48px 0 120px; }
.curriculum__inner {
  display: grid; grid-template-columns: 240px 1fr; gap: 64px;
  align-items: start;
}

/* Sommaire */
.toc {
  position: sticky; top: 128px;
  font-family: var(--font-mono); font-size: 11px;
  max-height: calc(100vh - 160px); overflow-y: auto;
  padding-right: 16px;
}
.toc__header {
  padding-bottom: 12px; border-bottom: 1px solid var(--rule);
  margin-bottom: 16px; color: var(--mono-dim);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.toc__nav { display: flex; flex-direction: column; gap: 2px; }
.toc__cat {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 12px; color: var(--ink); cursor: pointer;
  text-transform: uppercase; letter-spacing: 0.06em;
  border-left: 2px solid transparent;
  transition: all 0.2s var(--ease);
  text-decoration: none;
}
.toc__cat:hover { background: var(--accent-wash); color: var(--ink); }
.toc__cat.is-active { background: var(--accent-wash); border-left-color: var(--accent); color: var(--ink); }
.toc__cat.is-empty { opacity: 0.3; text-decoration: line-through; pointer-events: none; }
.toc__count { color: var(--mono-dim); font-weight: 400; }
.toc__cat.is-active .toc__count { color: var(--accent-text); font-weight: 500; }
.toc__footer {
  margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--mono-dim);
}
.toc__total { color: var(--ink); font-weight: 500; }

/* Concepts list */
.concepts { min-width: 0; }
.concepts__loader {
  padding: 60px 0; text-align: center; color: var(--mono-dim);
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Category header divider */
.cat-divider {
  padding: 48px 0 24px; margin-bottom: 16px;
  border-bottom: 1px solid var(--ink);
  display: flex; align-items: baseline; gap: 16px;
}
.cat-divider:first-child { padding-top: 0; }
.cat-divider__num {
  font-family: var(--font-mono); font-size: 11px; color: var(--accent-text);
  text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500;
}
.cat-divider__title {
  font-family: var(--font-serif); font-style: italic; font-size: 2.25rem;
  font-weight: 400; line-height: 1.1; color: var(--ink);
}

/* Concept entry (éditorial) */
.concept {
  padding: 40px 0; border-bottom: 1px solid var(--rule);
  position: relative; scroll-margin-top: 140px;
}
.concept__meta {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--mono-dim);
  margin-bottom: 20px;
}
.concept__num { color: var(--accent-text); font-weight: 500; }
.concept__cat-label { color: var(--mono-dim); }
.concept__diff {
  padding: 2px 8px; border: 1px solid var(--rule); border-radius: 2px;
  font-size: 9px;
}
.concept__diff--1 { color: var(--live); border-color: var(--live); background: rgba(11,218,81,0.05); }
.concept__diff--2 { color: var(--mono-dim); }
.concept__diff--3 { color: var(--accent); border-color: var(--accent); background: var(--accent-wash); }
.concept__time { color: var(--mono-dim); margin-left: auto; }
.concept__anchor {
  padding: 2px 6px; border: 1px solid transparent; opacity: 0;
  transition: opacity 0.2s var(--ease); text-decoration: none;
  color: var(--mono-dim); font-size: 9px;
}
.concept:hover .concept__anchor { opacity: 1; border-color: var(--rule); }
.concept__anchor:hover { color: var(--accent); border-color: var(--accent); }

.concept__title {
  font-family: var(--font-serif); font-style: italic;
  font-size: clamp(1.5rem, 2.8vw, 2rem); font-weight: 400;
  line-height: 1.15; margin-bottom: 4px; color: var(--ink);
  letter-spacing: -0.01em;
}
.concept__subtitle {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--mono-dim); margin-bottom: 20px;
}
.concept__body {
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: start;
}
.concept__content { max-width: 62ch; }
.concept__content p { margin-bottom: 14px; font-size: 1rem; line-height: 1.65; }
.concept__content p:last-child { margin-bottom: 0; }
.concept__visual {
  width: 180px; height: 120px; background: var(--paper-2);
  border: 1px solid var(--rule); display: flex;
  align-items: center; justify-content: center; color: var(--ink);
  flex-shrink: 0;
}
.concept__visual svg { width: 100%; height: 100%; }

.concept__analogy {
  margin: 20px 0; padding: 12px 0 12px 20px;
  border-left: 2px solid var(--accent);
  font-family: var(--font-serif); font-style: italic;
  font-size: 1.0625rem; line-height: 1.55; color: var(--ink);
  max-width: 58ch;
}
.concept__analogy::before { content: "« "; color: var(--accent); }
.concept__analogy::after { content: " »"; color: var(--accent); }

.concept__why {
  margin-top: 16px; padding: 12px 16px;
  background: var(--paper-2); border: 1px dashed var(--rule);
  font-size: 0.9375rem; line-height: 1.5; color: var(--ink); max-width: 62ch;
}
.concept__why::before {
  content: "Pourquoi ça compte — "; color: var(--accent);
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.08em; display: block; margin-bottom: 4px; font-weight: 500;
}

.concept__related {
  margin-top: 20px;
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--mono-dim);
  display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline;
}
.concept__related::before { content: "→ Voir aussi"; color: var(--mono-dim); margin-right: 4px; }
.concept__related a {
  color: var(--accent-text); text-decoration: none; padding: 6px 10px;
  border: 1px solid transparent; font-size: 12px;
}
.concept__related a:hover { border-color: var(--accent); background: var(--accent-wash); }

.concept mark { background: var(--accent-wash); color: var(--ink); padding: 0 2px; font-weight: 500; }

/* No results */
.no-results {
  padding: 80px 0; text-align: left;
}
.no-results__num { font-family: var(--font-mono); font-size: 11px; color: var(--accent-text); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 16px; }
.no-results__title { font-family: var(--font-serif); font-style: italic; font-size: 2.5rem; font-weight: 400; margin-bottom: 24px; }
.no-results__suggestions { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--mono-dim); }
.no-results__suggestions a { color: var(--accent-text); margin: 0 4px; text-decoration: none; border-bottom: 1px solid var(--accent-text); }

/* Mobile */
@media (max-width: 1024px) {
  .curriculum__inner { grid-template-columns: 200px 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .curriculum-hero { padding: 60px 0 48px; }
  .curriculum__inner { grid-template-columns: 1fr; gap: 0; }
  .toc {
    position: fixed; top: auto; bottom: 20px; right: 20px; z-index: 45;
    max-height: 0; overflow: hidden; padding: 0;
    background: var(--ink); color: var(--paper); border: 1px solid var(--ink);
    width: 56px; height: 56px;
    border-radius: 2px; transition: all 0.3s var(--ease);
  }
  .toc.is-open {
    max-height: 80vh; width: calc(100vw - 40px); height: auto;
    padding: 20px;
  }
  .toc::before {
    content: attr(data-label); position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-mono); font-size: 11px; color: var(--paper);
    pointer-events: none;
  }
  .toc.is-open::before { display: none; }
  .toc__header, .toc__nav, .toc__footer { color: var(--paper); }
  .toc__cat { color: var(--paper); }
  .toc__cat:hover, .toc__cat.is-active { background: rgba(255,77,28,0.2); color: var(--paper); }
  .concept__body { grid-template-columns: 1fr; }
  .concept__visual { width: 100%; height: 100px; order: -1; margin-bottom: 16px; }
  .concept__title { font-size: 1.5rem; }
  .filter-bar__inner { gap: 16px; padding: 12px 16px; overflow-x: auto; }
  .filter-group { flex-shrink: 0; }
}