/* ============================================================
   assets/css/style.css — Links App
   ============================================================ */

/* --- Variables (thème sombre par défaut) ------------------- */
:root {
  --bg:          #444444;
  --bg-surface:  #3e3e3e;
  --bg-hover:    #4a4a4a;
  --border:      #555555;
  --accent:      #6366f1;
  --accent-soft: rgba(99,102,241,.15);
  --accent-glow: rgba(99,102,241,.25);
  --text-1:      #ffffff;
  --text-2:      #999999;
  --text-3:      #999999;
  --link:        #a5b4fc;
  --link-hover:  #c7d2fe;
  --danger:      #f87171;
  --success:     #34d399;
  --radius:      10px;
  --radius-sm:   6px;
  --sidebar-w:   240px;
  --font:        'Inter', system-ui, -apple-system, sans-serif;
  --mono:        'JetBrains Mono', 'Fira Code', monospace;
  --transition:  .15s ease;
}

[data-theme="light"] {
  --bg:          #f5f6fa;
  --bg-surface:  #ffffff;
  --bg-hover:    #f0f1f8;
  --border:      #e2e4f0;
  --accent:      #4f46e5;
  --accent-soft: rgba(79,70,229,.08);
  --accent-glow: rgba(79,70,229,.18);
  --text-1:      #1e1f2e;
  --text-2:      #4a5272;
  --text-3:      #8892b0;
  --link:        #4f46e5;
  --link-hover:  #3730a3;
}

/* --- Reset & base ------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--link-hover); }

img { display: block; }

/* --- Layout ------------------------------------------------- */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar ----------------------------------------------- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
  transition: background var(--transition), border-color var(--transition);
}

.sidebar-header {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
}

.site-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text-1);
}

.site-subtitle {
  font-size: .85rem;
  color: var(--text-3);
  margin-top: .15rem;
}

.sidebar-nav {
  flex: 1;
  padding: .75rem 0;
}

.nav-label {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: .5rem 1.25rem .25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem 1.25rem;
  color: var(--text-2);
  font-size: 1.0rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
  border-left: 2px solid transparent;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--text-1);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.nav-cat:hover {
  background: transparent;
}

.nav-item.active {
  color: var(--text-1);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

/* Catégories avec couleur propre */
.nav-cat {
  border-left-color: var(--cat-color, var(--accent));
}

.nav-cat:hover {
  background: transparent;
  border-left-color: var(--cat-color, var(--accent));
}

.nav-cat.active {
  color: var(--text-1);
  border-left-color: var(--cat-color, var(--accent));
  background: transparent;
}

/* Fond sur toute la ligne au survol et à l'état actif */
.cat-nav-row:hover,
.cat-nav-row:has(.nav-cat.active) {
  background: color-mix(in srgb, var(--cat-color, var(--accent)) 12%, transparent);
}

.cat-nav-row:has(.nav-cat.active) .nav-cat {
  color: var(--text-1);
}

.nav-icon { font-size: 1rem; flex-shrink: 0; }

.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --- Theme toggle ------------------------------------------ */
.theme-toggle {
  background: none;
  border: none;
  padding: .2rem;
  cursor: pointer;
  color: var(--text-2);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  line-height: 0;
}
.theme-toggle:hover { color: var(--text-1); }

/* Sombre : afficher soleil, cacher lune */
.icon-moon { display: none; }
.icon-sun  { display: block; }

/* Clair : afficher lune, cacher soleil */
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* --- Main content ------------------------------------------ */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 2.5rem 2rem 4rem;
  max-width: 900px;
}

/* --- Category section -------------------------------------- */
.category-section {
  margin-bottom: 3.5rem;
  scroll-margin-top: 1.5rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.75rem;
}

.category-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.025em;
  color: var(--text-1);
}

/* --- Subcategory ------------------------------------------- */
.subcategory {
  margin-bottom: 1.75rem;
}

.subcategory-title {
  font-size: 1.0rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: .6rem;
  padding-bottom: .4rem;
  border-bottom: 2px solid var(--sub-color, var(--accent));
  display: inline-block;
}

/* --- Links list -------------------------------------------- */
.links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.link-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .35rem .5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.link-item:hover {
  background: var(--accent-soft);
}

.link-favicon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  border-radius: 3px;
}

.link-title {
  font-size: 1rem;
  color: var(--link);
  font-weight: 500;
  transition: color var(--transition);
}

.link-title:hover { color: var(--link-hover); }

.link-desc {
  font-size: .78rem;
  color: var(--text-3);
  margin-left: auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

/* --- Empty state ------------------------------------------- */
.empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-3);
}
.empty-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.empty p { font-size: .9rem; }
.empty a { color: var(--accent); }

/* --- Scrollbar --------------------------------------------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* --- Mobile ------------------------------------------------- */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .app-wrapper { flex-direction: column; }

  .main {
    margin-left: 0;
    padding: 1.5rem 1rem 3rem;
  }

  .sidebar-nav { display: flex; flex-wrap: wrap; padding: .5rem; }
  .nav-item { border-left: none; border-radius: var(--radius-sm); }
  .nav-label { display: none; }

  .link-desc { display: none; }
}