/* ============================================================
   GSA 2025 — Modern Theme
   Design system partagé pour toute l'application
   Dark mode par défaut, light mode optionnel
   ============================================================ */

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

:root {
  /* ---- Palette DARK (par défaut) ---- */
  --bg-0: #0a0e14;            /* fond principal */
  --bg-1: #111620;            /* cartes / sidebar */
  --bg-2: #1a2030;            /* header / inputs */
  --bg-3: #252d40;            /* hover / borders */
  --bg-elevated: #161c28;     /* modals / dropdowns */

  --border: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.12);

  --text-1: #f1f5f9;          /* texte principal */
  --text-2: #94a3b8;          /* texte secondaire */
  --text-3: #64748b;          /* texte discret */

  /* Accents GSA — rouge cramoisi + complémentaires */
  --accent: #ef4444;          /* rouge principal */
  --accent-hover: #dc2626;
  --accent-glow: rgba(239, 68, 68, 0.35);
  --accent-soft: rgba(239, 68, 68, 0.12);

  --success: #10b981;
  --success-soft: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.12);
  --info: #3b82f6;
  --info-soft: rgba(59, 130, 246, 0.12);

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 24px var(--accent-glow);

  /* Rayons */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Typographie */
  --font-sans: 'Plus Jakarta Sans', -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Palette LIGHT (si besoin) ---- */
body.light {
  --bg-0: #f8fafc;
  --bg-1: #ffffff;
  --bg-2: #f1f5f9;
  --bg-3: #e2e8f0;
  --bg-elevated: #ffffff;
  --border: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.12);
  --text-1: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.5;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

img, svg { display: block; max-width: 100%; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ============================================================
   COMPONENTS
   ============================================================ */

/* ---- Boutons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--bg-2);
  color: var(--text-1);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:hover {
  background: var(--bg-3);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), #b91c1c);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-ghost { background: transparent; border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-2); }

.btn-icon {
  width: 40px; height: 40px; padding: 0;
  border-radius: var(--radius-md);
}

.btn-block { width: 100%; }

/* ---- Inputs ---- */
.input-group { position: relative; margin-bottom: 18px; }

.input-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-1);
  font-size: 15px;
  transition: var(--transition);
  outline: none;
}
.input::placeholder { color: var(--text-3); }
.input:hover { border-color: var(--border-strong); }
.input:focus {
  border-color: var(--accent);
  background: var(--bg-1);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.input-icon-left { padding-left: 44px; }
.input-wrapper { position: relative; }
.input-wrapper .icon-left {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
  font-size: 16px;
}
.input:focus + .icon-left { color: var(--accent); }

/* ---- Cartes ---- */
.card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-1);
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: var(--bg-3);
  color: var(--text-2);
}
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-danger  { background: var(--accent-soft); color: var(--accent); }
.badge-info    { background: var(--info-soft); color: var(--info); }

/* ---- Tables ---- */
.table-wrapper {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left;
  padding: 14px 18px;
  background: var(--bg-2);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}
.table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-1);
  font-size: 14px;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-2); }

/* ---- Stats cards ---- */
.stat-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card:hover::before { opacity: 1; }

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: 10px;
}
.stat-card .stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -0.02em;
}
.stat-card .stat-trend {
  margin-top: 8px;
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
}

/* ---- Sidebar ---- */
.sidebar {
  width: 260px;
  min-height: 100vh;
  background: var(--bg-1);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: fixed;
  left: 0; top: 0;
}
.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px 24px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.sidebar .brand .logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.sidebar .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: var(--text-2);
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
}
.sidebar .nav-item:hover { background: var(--bg-2); color: var(--text-1); }
.sidebar .nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.sidebar .nav-item i { font-size: 16px; width: 20px; }

/* ---- Main content ---- */
.main-content {
  margin-left: 260px;
  padding: 28px 36px;
  min-height: 100vh;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.page-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.page-subtitle {
  color: var(--text-2);
  font-size: 14px;
  margin-top: 4px;
}

/* ---- Grid ---- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .sidebar { transform: translateX(-100%); transition: var(--transition); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; padding: 20px; }
}

/* ---- Utilities ---- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.text-muted { color: var(--text-2); }
.text-accent { color: var(--accent); }
.text-sm { font-size: 13px; }
.text-lg { font-size: 17px; }
.font-bold { font-weight: 700; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { box-shadow: 0 0 0 10px transparent; }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-slide-up { animation: slideUp 0.6s ease forwards; }

/* ---- Toast / Notifications ---- */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 14px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  color: var(--text-1);
  font-size: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  animation: slideUp 0.3s ease;
  max-width: 360px;
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--accent); }

/* ---- Loader ---- */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }