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

html {
  font-size: var(--font-size);
  line-height: var(--line-height);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  transition: background-color var(--transition-slow), color var(--transition-slow);
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

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

/* ─── Sidebar ───────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 200;
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.brand-icon {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.brand-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Navigation ────────────────────────────────────────────────────────── */
.nav {
  flex: 1;
  padding: var(--space-3) 0;
}

.nav-section {
  margin-bottom: var(--space-3);
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
  margin-top: var(--space-2);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 0;
  transition: background-color var(--transition), color var(--transition);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.nav-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}
.nav-item.active svg, .nav-item:hover svg { opacity: 1; }

.nav-badge {
  margin-left: auto;
  background: var(--color-danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

/* ─── Zone principale ───────────────────────────────────────────────────── */
.main-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Topbar ────────────────────────────────────────────────────────────── */
.topbar {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--content-padding);
  position: sticky;
  top: 0;
  z-index: 100;
  gap: var(--space-4);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Bouton toggle menu mobile */
.btn-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.btn-menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 1px;
  transition: var(--transition);
}

/* Fil d'Ariane */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13px;
  color: var(--color-text-secondary);
  min-width: 0;
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .bc-sep { color: var(--color-border); }
.breadcrumb span:last-child { color: var(--color-text); font-weight: 500; }

/* Bouton thème */
.theme-toggle {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: background-color var(--transition), border-color var(--transition);
}
.theme-toggle:hover { background: var(--color-bg); border-color: var(--color-primary); }

[data-theme="light"] .theme-icon-light,
[data-theme="dark"]  .theme-icon-dark  { display: flex; align-items: center; justify-content: center; }
[data-theme="light"] .theme-icon-dark,
[data-theme="dark"]  .theme-icon-light { display: none; }

/* Infos utilisateur */
.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13px;
}
.user-name { color: var(--color-text); font-weight: 500; max-width: 160px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { color: var(--color-text-muted); font-size: 11px; }

.user-menu-wrap { position: relative; }
.user-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  min-width: 180px;
  padding: var(--space-2) 0;
  z-index: 300;
  display: none;
}
.user-menu-wrap.open .user-dropdown { display: block; }
.user-dropdown a {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: 13px;
  color: var(--color-text);
  transition: background-color var(--transition);
}
.user-dropdown a:hover { background: var(--color-bg); text-decoration: none; }
.user-dropdown hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-2) 0; }
.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

/* ─── Contenu principal ─────────────────────────────────────────────────── */
.page-content {
  flex: 1;
  padding: var(--content-padding);
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.page-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.page-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.page-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ─── Grille stats ──────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stat-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.stat-card.stat-warning .stat-value { color: var(--color-warning); }
.stat-card.stat-danger  .stat-value { color: var(--color-danger); }
.stat-card.stat-success .stat-value { color: var(--color-success); }
.stat-card.stat-primary .stat-value { color: var(--color-primary); }

/* ─── Cards / Panneaux ──────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.card-body { padding: var(--space-5); }
.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
}

/* ─── Page de connexion ─────────────────────────────────────────────────── */
.auth-page {
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-5);
}

.auth-container {
  width: 100%;
  max-width: 380px;
}

.auth-logo {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-logo-icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  color: white;
  font-size: 22px;
  font-weight: 800;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
}

.auth-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}
.auth-subtitle {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow);
}

.auth-theme-toggle {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: var(--shadow-sm);
  color: var(--color-text-secondary);
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-area {
    margin-left: 0;
  }
  .btn-menu-toggle {
    display: flex;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .page-content {
    padding: var(--space-4);
  }
}