/* Les Invisibles Systémiques, assets/site.css
 * Styles partagés : dark mode, bouton thème, animations scroll, barre progression, filtres articles.
 * Les variables de thème sont ici pour qu'on puisse les ajuster en un seul endroit.
 */

/* ==== THÈME CLAIR (par défaut) ==== */
:root {
  --papier: #F7F5F0;
  --papier-2: #EDE9E1;
  --noir: #1C1A16;
  --noir-2: #2A2720;
  --ambre: #C17F3A;
  --ambre-dark: #8A5820;
  --muted: #7A6A5A;
  --border-soft: rgba(28,26,22,0.1);
  --text-inverse: #F7F5F0;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Space Grotesk', system-ui, sans-serif;
  --scheme: light;
  color-scheme: light;
}

/* ==== THÈME SOMBRE ==== */
:root[data-theme="dark"] {
  --papier: #141210;
  --papier-2: #1E1B17;
  --noir: #F2EFE8;
  --noir-2: #E8E3D8;
  --ambre: #D99558;
  --ambre-dark: #C17F3A;
  --muted: #A39685;
  --border-soft: rgba(242,239,232,0.12);
  --text-inverse: #141210;
  --scheme: dark;
  color-scheme: dark;
}

/* Smooth transition entre les thèmes */
html { transition: background-color 0.3s ease; }
body, nav, header, footer, section, main, article, aside,
.article-card, .article-row, .theme-item, .hero-right-top, .hero-right-inner,
.filter-btn, .search-input, .newsletter-input, .hero-stat, .about-right {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ==== BOUTON DE BASCULE THÈME ==== */
.theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--border-soft);
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
  padding: 0;
}
.theme-toggle:hover { color: var(--noir); background: var(--papier-2); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Version mobile du bouton (dans le menu burger) */
.mobile-menu .theme-toggle {
  width: auto; height: auto; padding: 22px 40px;
  border-left: none;
  border-bottom: 1px solid rgba(247,245,240,0.08);
  color: var(--papier);
  display: flex; align-items: center; justify-content: center; gap: 12px;
  font-size: 14px; font-weight: 500; letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mobile-menu .theme-toggle:hover { background: rgba(193,127,58,0.08); color: var(--ambre); }
.mobile-menu .theme-toggle .label-light { display: none; }
.mobile-menu .theme-toggle .label-dark { display: inline; }
:root[data-theme="dark"] .mobile-menu .theme-toggle .label-light { display: inline; }
:root[data-theme="dark"] .mobile-menu .theme-toggle .label-dark { display: none; }

/* ==== ANIMATIONS SCROLL ==== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal.reveal-delay-1 { transition-delay: 0.1s; }
.reveal.reveal-delay-2 { transition-delay: 0.2s; }
.reveal.reveal-delay-3 { transition-delay: 0.3s; }
.reveal.reveal-delay-4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-visible {
    opacity: 1; transform: none; transition: none;
  }
}

/* ==== BARRE DE PROGRESSION LECTURE ==== */
.read-progress {
  position: fixed;
  top: 60px; left: 0; right: 0;
  height: 3px;
  background: var(--ambre);
  z-index: 198;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.08s linear;
  pointer-events: none;
}

/* ==== SECTION STATS ==== */
.stats-section {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 3px solid var(--noir);
  background: var(--papier-2);
}
.stat-block {
  padding: 60px 40px;
  border-right: 3px solid var(--noir);
  text-align: center;
}
.stat-block:last-child { border-right: none; }
.stat-num {
  font-family: var(--serif);
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 900;
  line-height: 1;
  color: var(--ambre);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
@media (max-width: 768px) {
  .stats-section { grid-template-columns: 1fr; }
  .stat-block { padding: 40px 20px; border-right: none; border-bottom: 3px solid var(--noir); }
  .stat-block:last-child { border-bottom: none; }
  /* Cache le theme-toggle du nav desktop sur mobile (le toggle reste accessible dans .mobile-menu) */
  nav > .theme-toggle { display: none; }
}

/* ==== FILTRES ARTICLES ==== */
.filters-bar {
  border-bottom: 3px solid var(--noir);
  background: var(--papier);
  padding: 24px 40px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}
.filters-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-btn {
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 10px 16px;
  background: transparent;
  color: var(--muted);
  border: 2px solid var(--border-soft);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.filter-btn:hover { color: var(--noir); border-color: var(--noir); }
.filter-btn.is-active {
  background: var(--noir);
  color: var(--papier);
  border-color: var(--noir);
}
.search-wrap {
  position: relative;
  min-width: 240px;
}
.search-input {
  font-family: inherit;
  font-size: 13px;
  font-weight: 400;
  padding: 11px 16px 11px 40px;
  border: 2px solid var(--border-soft);
  background: var(--papier);
  color: var(--noir);
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}
.search-input::placeholder { color: var(--muted); }
.search-input:focus { border-color: var(--ambre); }
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--muted);
  pointer-events: none;
}

.empty-state {
  padding: 80px 40px;
  text-align: center;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 20px;
  font-style: italic;
  display: none;
}

@media (max-width: 768px) {
  .filters-bar {
    grid-template-columns: 1fr;
    padding: 16px 20px;
    gap: 16px;
  }
  .filters-group { gap: 6px; }
  .filter-btn { padding: 8px 12px; font-size: 9px; letter-spacing: 0.1em; }
  .search-wrap { min-width: 0; }
}

/* ==== AJUSTEMENTS DARK MODE POUR ÉLÉMENTS DÉJÀ NOIRS ==== */
/* Les éléments qui ont un fond noir fixe (featured card, themes, etc.) doivent rester lisibles */
:root[data-theme="dark"] .article-card.featured,
:root[data-theme="dark"] .manifesto,
:root[data-theme="dark"] footer,
:root[data-theme="dark"] .about-right,
:root[data-theme="dark"] .article-header {
  background: #0A0906;
}
:root[data-theme="dark"] .themes {
  background: var(--ambre-dark);
}
:root[data-theme="dark"] .hero-right-top {
  background: var(--papier-2);
}