/* ===== EPSI – Custom Styles ===== */
:root {
  --sidebar-width: 260px;
  --sidebar-bg: #0f2d5c;
  --sidebar-hover: #1a4a8a;
  --sidebar-active: #1a73e8;
  --primary: #1a73e8;
  --success: #34a853;
  --warning: #fbbc04;
  --danger: #ea4335;
  --light-bg: #f0f4f8;
  --card-shadow: 0 2px 12px rgba(0,0,0,.08);
  --radius: 10px;
}

/* ===== Layout ===== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--light-bg);
  color: #333;
  min-height: 100vh;
}

.wrapper { display: flex; min-height: 100vh; }

/* ===== Sidebar ===== */
#sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar-bg);
  position: fixed;
  top: 0; left: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: width .3s;
  overflow: hidden;
}

#sidebar .sidebar-brand {
  padding: 1.5rem 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  gap: .8rem;
  text-decoration: none;
}
#sidebar .sidebar-brand .brand-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff;
  flex-shrink: 0;
}
#sidebar .sidebar-brand .brand-text { color: #fff; }
#sidebar .sidebar-brand .brand-text strong { display: block; font-size: 1.1rem; }
#sidebar .sidebar-brand .brand-text small { font-size: .7rem; opacity: .7; line-height: 1.2; }

/* Sidebar collapsible section toggle */
#sidebar .sidebar-group { margin-top: .25rem; }

#sidebar .sidebar-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .45rem 1rem .25rem;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,.45);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: color .2s;
  user-select: none;
}
#sidebar .sidebar-section-toggle:hover { color: rgba(255,255,255,.75); }
#sidebar .sidebar-section-toggle .sidebar-chevron {
  font-size: .6rem;
  transition: transform .25s ease;
  opacity: .7;
}
#sidebar .sidebar-section-toggle[aria-expanded="false"] .sidebar-chevron {
  transform: rotate(-90deg);
}

#sidebar .nav-link {
  padding: .6rem 1.2rem;
  color: rgba(255,255,255,.75);
  display: flex;
  align-items: center;
  gap: .75rem;
  border-radius: 8px;
  margin: 2px 8px;
  font-size: .88rem;
  transition: all .2s;
  text-decoration: none;
}
#sidebar .nav-link i { width: 20px; text-align: center; font-size: .9rem; flex-shrink: 0; }
#sidebar .nav-link:hover  { background: var(--sidebar-hover); color: #fff; }
#sidebar .nav-link.active { background: var(--primary); color: #fff; font-weight: 600; }
#sidebar .nav-link .badge { margin-left: auto; font-size: .65rem; }

#sidebar .sidebar-footer {
  margin-top: auto;
  padding: 1rem;
  border-top: 1px solid rgba(255,255,255,.1);
}

/* ===== Main Content ===== */
#main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin .3s;
}

/* ===== Top Navbar ===== */
.topbar {
  background: #fff;
  padding: .75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  position: sticky;
  top: 0;
  z-index: 900;
}
.topbar .page-title { font-size: 1.15rem; font-weight: 600; margin: 0; color: var(--sidebar-bg); }
.topbar .topbar-right { display: flex; align-items: center; gap: 1rem; }
.user-badge {
  display: flex; align-items: center; gap: .5rem;
  padding: .4rem .8rem;
  background: var(--light-bg);
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
}
.user-badge .user-avatar {
  width: 32px; height: 32px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: .8rem; font-weight: 700;
}
.role-badge-admin   { background: #e3f2fd; color: #1565c0; }
.role-badge-enseignant { background: #e8f5e9; color: #2e7d32; }
.role-badge-etudiant   { background: #fff3e0; color: #e65100; }

/* ===== Content Area ===== */
.content-area { padding: 1.5rem; flex: 1; }

/* ===== Cards ===== */
.card {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  background: #fff;
}
.card-header {
  background: transparent;
  border-bottom: 1px solid #f0f0f0;
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: .95rem;
}

/* ===== Stat Cards ===== */
.stat-card {
  border-radius: var(--radius);
  padding: 1.4rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.stat-card::before {
  content: '';
  position: absolute;
  right: -20px; top: -20px;
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
}
.stat-card::after {
  content: '';
  position: absolute;
  right: 20px; bottom: -30px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.stat-card .stat-icon {
  width: 56px; height: 56px;
  background: rgba(255,255,255,.2);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
  z-index: 1;
}
.stat-card .stat-body { z-index: 1; }
.stat-card .stat-value { font-size: 2rem; font-weight: 700; line-height: 1; }
.stat-card .stat-label { font-size: .82rem; opacity: .85; margin-top: .2rem; }

.stat-blue    { background: linear-gradient(135deg, #1a73e8, #0d47a1); }
.stat-green   { background: linear-gradient(135deg, #34a853, #1b5e20); }
.stat-orange  { background: linear-gradient(135deg, #f57c00, #bf360c); }
.stat-purple  { background: linear-gradient(135deg, #7b1fa2, #4a148c); }
.stat-teal    { background: linear-gradient(135deg, #00897b, #004d40); }
.stat-red     { background: linear-gradient(135deg, #ea4335, #b71c1c); }

/* ===== Tables ===== */
.table-responsive { border-radius: var(--radius); overflow: hidden; }
.table { margin-bottom: 0; }
.table thead th {
  background: #f8f9fa;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: #666;
  font-weight: 600;
  border-bottom: 2px solid #e9ecef;
  padding: .85rem 1rem;
}
.table tbody td { padding: .85rem 1rem; vertical-align: middle; font-size: .9rem; }
.table tbody tr { transition: background .15s; }
.table tbody tr:hover { background: #f8fbff; }

/* ===== Badges ===== */
.status-badge {
  padding: .3rem .75rem;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 600;
}

/* ===== Forms ===== */
.form-label { font-size: .85rem; font-weight: 500; color: #555; margin-bottom: .3rem; }
.form-control, .form-select {
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  padding: .55rem .85rem;
  font-size: .9rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,115,232,.15);
}
.input-group-text { border: 1.5px solid #e2e8f0; border-radius: 8px; background: #f8f9fa; }

/* ===== Buttons ===== */
.btn {
  border-radius: 8px;
  font-weight: 500;
  font-size: .88rem;
  padding: .5rem 1rem;
  transition: all .2s;
}
.btn-primary   { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover  { background: #1558d6; border-color: #1558d6; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(26,115,232,.3); }
.btn-success:hover  { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(52,168,83,.3); }
.btn-danger:hover   { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(234,67,53,.3); }
.btn-sm { padding: .3rem .7rem; font-size: .8rem; }
.btn-icon { width: 32px; height: 32px; padding: 0; display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; }

/* ===== Page Header ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.page-header h2 { font-size: 1.4rem; font-weight: 700; margin: 0; color: var(--sidebar-bg); }

/* ===== Search Bar ===== */
.search-bar { position: relative; }
.search-bar input { padding-left: 2.5rem; border-radius: 50px; }
.search-bar .search-icon { position: absolute; left: .85rem; top: 50%; transform: translateY(-50%); color: #aaa; font-size: .85rem; }

/* ===== Avatar ===== */
.avatar-circle {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .9rem; color: #fff; flex-shrink: 0;
}

/* ===== Login Page ===== */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--sidebar-bg) 0%, #1a4a8a 100%);
  display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: #fff;
  border-radius: 18px;
  padding: 2.5rem;
  width: 100%; max-width: 440px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-logo {
  width: 70px; height: 70px;
  background: var(--primary);
  border-radius: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
  margin: 0 auto 1.5rem;
}

/* ===== Breadcrumb ===== */
.breadcrumb { font-size: .82rem; margin-bottom: 0; }
.breadcrumb-item + .breadcrumb-item::before { color: #aaa; }
.breadcrumb-item a { color: var(--primary); text-decoration: none; }

/* ===== Profile Card ===== */
.profile-header {
  background: linear-gradient(135deg, var(--sidebar-bg) 0%, #1a4a8a 100%);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 2rem;
  color: #fff;
  text-align: center;
}
.profile-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; font-weight: 700; color: #fff;
  margin: 0 auto 1rem;
  border: 3px solid rgba(255,255,255,.4);
}

/* ===== Info List ===== */
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li {
  display: flex;
  gap: .75rem;
  padding: .65rem 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: .9rem;
}
.info-list li:last-child { border-bottom: none; }
.info-list li i { color: var(--primary); width: 18px; text-align: center; margin-top: 2px; }
.info-list .label { font-weight: 500; color: #666; min-width: 140px; }
.info-list .value { color: #333; }

/* ===== Chart Container ===== */
.chart-container { position: relative; height: 280px; }

/* ===== Bulletin/Print ===== */
@media print {
  #sidebar, .topbar, .no-print { display: none !important; }
  #main-content { margin-left: 0 !important; }
  .print-only { display: block !important; }
  body { background: #fff; }
  .card { box-shadow: none; border: 1px solid #ddd; }
}
.print-only { display: none; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: #aaa;
}
.empty-state i { font-size: 3rem; margin-bottom: 1rem; display: block; }
.empty-state h5 { color: #888; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  #sidebar { width: 0; }
  #sidebar.show { width: var(--sidebar-width); }
  #main-content { margin-left: 0; }
  .content-area { padding: 1rem; }
  .stat-card .stat-value { font-size: 1.6rem; }
}

/* ===== Utility ===== */
.gap-1 { gap: .25rem; }
.border-left-primary { border-left: 4px solid var(--primary) !important; }
.border-left-success { border-left: 4px solid var(--success) !important; }
.border-left-warning { border-left: 4px solid var(--warning) !important; }
.border-left-danger  { border-left: 4px solid var(--danger) !important; }
.text-primary { color: var(--primary) !important; }
.fw-600 { font-weight: 600; }
.fs-sm  { font-size: .82rem; }