:root {
  /* Palette principale (light) */
  --el-color-primary: #4F46E5;
  --el-color-primary-deep: #4338CA;
  --el-color-accent: #7C3AED;
  --el-color-soft-indigo: #818CF8;
  --el-color-soft-violet: #A78BFA;

  /* Aliases backward-compat — les pages existantes utilisent ces noms */
  --el-color-primary-blue: var(--el-color-primary);
  --el-color-dark-blue: var(--el-color-primary-deep);
  --el-color-primary-purple: var(--el-color-accent);
  --el-color-soft-purple: var(--el-color-soft-violet);
  --el-color-primary-green: #22C55E;
  --el-color-soft-green: #4ADE80;

  /* Surfaces */
  --el-color-bg: #FAFAFB;
  --el-color-bg-soft: #F4F4F8;
  --el-color-surface: #FFFFFF;
  --el-color-surface-alt: #F8FAFC;

  /* Texte */
  --el-color-text: #0F172A;
  --el-color-text-secondary: #64748B;

  /* Bordures */
  --el-color-border: #E2E8F0;
  --el-color-border-strong: #CBD5E1;

  /* Statuts */
  --el-color-success: #22C55E;
  --el-color-warning: #F59E0B;
  --el-color-danger: #EF4444;
  --el-color-info-bg: #EEF2FF;

  /* Gradients */
  --el-gradient-brand: linear-gradient(120deg, #4F46E5 0%, #7C3AED 100%);
  --el-gradient-soft: radial-gradient(circle at 30% 30%, rgba(79,70,229,.08), transparent 60%), radial-gradient(circle at 70% 70%, rgba(124,58,237,.08), transparent 60%);
  --el-gradient-banner-success: linear-gradient(120deg, rgba(34,197,94,.12), rgba(20,184,166,.12));
  --el-gradient-dot-pattern: radial-gradient(rgba(79,70,229,0.08) 1px, transparent 1px);

  /* Radius */
  --el-radius-sm: 10px;
  --el-radius-md: 14px;
  --el-radius-lg: 20px;
  --el-radius-xl: 28px;
  --el-radius-2xl: 36px;
  --el-radius-full: 9999px;

  /* Ombres (teintées indigo/violet) */
  --el-shadow-xs: 0 1px 2px rgba(79, 70, 229, 0.08);
  --el-shadow-sm: 0 4px 12px rgba(79, 70, 229, 0.10);
  --el-shadow-md: 0 12px 28px -8px rgba(79, 70, 229, 0.18);
  --el-shadow-lg: 0 24px 56px -12px rgba(124, 58, 237, 0.22);
  --el-shadow-brand: 0 14px 30px -10px rgba(124, 58, 237, 0.45);

  /* Spacing (conservé) */
  --el-space-1: 0.25rem;
  --el-space-2: 0.5rem;
  --el-space-3: 0.75rem;
  --el-space-4: 1rem;
  --el-space-5: 1.25rem;
  --el-space-6: 1.5rem;
  --el-space-7: 1.75rem;
  --el-space-8: 2.25rem;
  --el-space-10: 2.75rem;

  /* Tailles de texte (conservées) */
  --el-text-xs: 0.75rem;
  --el-text-sm: 0.875rem;
  --el-text-base: 1rem;
  --el-text-lg: 1.125rem;
  --el-text-xl: 1.25rem;
  --el-text-2xl: 1.5rem;
  --el-text-3xl: 2rem;
  --el-text-4xl: 2.5rem;

  /* Typo */
  --el-font-sans: "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Transitions */
  --el-transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --el-color-primary: #818CF8;
  --el-color-primary-deep: #6366F1;
  --el-color-accent: #A78BFA;
  --el-color-soft-indigo: #6366F1;
  --el-color-soft-violet: #8B5CF6;

  --el-color-primary-blue: var(--el-color-primary);
  --el-color-dark-blue: var(--el-color-primary-deep);
  --el-color-primary-purple: var(--el-color-accent);
  --el-color-soft-purple: var(--el-color-soft-violet);

  --el-color-bg: #0B0B14;
  --el-color-bg-soft: #14141F;
  --el-color-surface: #1A1A28;
  --el-color-surface-alt: #20202F;

  --el-color-text: #F1F5F9;
  --el-color-text-secondary: #94A3B8;

  --el-color-border: #2A2A3D;
  --el-color-border-strong: #3A3A52;

  --el-color-info-bg: #1E1B4B;

  --el-gradient-brand: linear-gradient(120deg, #6366F1 0%, #8B5CF6 100%);
  --el-gradient-soft: radial-gradient(circle at 30% 30%, rgba(129,140,248,.10), transparent 60%), radial-gradient(circle at 70% 70%, rgba(167,139,250,.10), transparent 60%);
  --el-gradient-dot-pattern: radial-gradient(rgba(129,140,248,0.12) 1px, transparent 1px);

  --el-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --el-shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
  --el-shadow-md: 0 12px 28px -8px rgba(0, 0, 0, 0.5);
  --el-shadow-lg: 0 24px 56px -12px rgba(0, 0, 0, 0.6);
  --el-shadow-brand: 0 14px 30px -10px rgba(139, 92, 246, 0.5);
}

* { box-sizing: border-box; }

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  margin: 0;
  padding: 0;
  font-family: var(--el-font-sans);
  font-feature-settings: "ss01", "cv11";
  font-size: var(--el-text-base);
  line-height: 1.6;
  color: var(--el-color-text);
  background:
    var(--el-gradient-soft),
    var(--el-color-bg);
  min-height: 100vh;
  transition: background-color var(--el-transition), color var(--el-transition);
}

h1, h2, h3, h4 {
  margin: 0 0 var(--el-space-3);
  line-height: 1.2;
  color: var(--el-color-text);
  font-weight: 800;
  letter-spacing: -0.02em;
}
h1 { font-size: var(--el-text-3xl); font-weight: 900; letter-spacing: -0.025em; }
h2 { font-size: var(--el-text-2xl); font-weight: 800; }
h3 { font-size: var(--el-text-lg); font-weight: 700; }
p, ul, ol { margin: 0 0 var(--el-space-4); }
a {
  color: var(--el-color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--el-transition);
}
a:hover { color: var(--el-color-accent); }
code {
  padding: 2px 8px;
  border-radius: var(--el-radius-sm);
  background: var(--el-color-info-bg);
  color: var(--el-color-primary-deep);
  font-size: 0.875em;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
hr { border: 0; border-top: 1px solid var(--el-color-border); margin: var(--el-space-5) 0; }

form { margin: 0; }
label {
  display: inline-flex;
  flex-direction: column;
  gap: var(--el-space-1);
  margin-bottom: var(--el-space-3);
  font-size: var(--el-text-sm);
  font-weight: 600;
  color: var(--el-color-text);
}
input, textarea, select {
  min-width: 16rem;
  max-width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--el-color-border);
  border-radius: var(--el-radius-md);
  background-color: var(--el-color-surface);
  color: var(--el-color-text);
  font-family: var(--el-font-sans);
  font-size: var(--el-text-base);
  transition: border-color var(--el-transition), box-shadow var(--el-transition), background-color var(--el-transition);
}
input:hover, textarea:hover, select:hover { border-color: var(--el-color-border-strong); }
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: none;
  border-color: var(--el-color-primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.18);
}

button {
  border: 1px solid transparent;
  border-radius: var(--el-radius-md);
  padding: 12px 24px;
  font-family: var(--el-font-sans);
  font-weight: 700;
  font-size: var(--el-text-sm);
  letter-spacing: 0.01em;
  background: var(--el-gradient-brand);
  color: #fff;
  box-shadow: var(--el-shadow-brand);
  cursor: pointer;
  transition: transform var(--el-transition), box-shadow var(--el-transition), filter var(--el-transition);
}
button:hover { transform: translateY(-2px); filter: brightness(1.05); box-shadow: 0 18px 36px -10px rgba(124, 58, 237, 0.5); }
button:active { transform: translateY(0) scale(0.98); }
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--el-color-primary);
  outline-offset: 3px;
}

button.el-button-secondary {
  background: transparent;
  border: 1.5px solid var(--el-color-primary);
  color: var(--el-color-primary);
  box-shadow: none;
}
button.el-button-secondary:hover {
  background: rgba(79, 70, 229, 0.08);
  filter: none;
}

button.el-button-link, .el-button-link {
  background: transparent;
  border: none;
  color: var(--el-color-primary);
  box-shadow: none;
  padding: 6px 10px;
  font-weight: 600;
}
button.el-button-link:hover, .el-button-link:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--el-color-accent);
  filter: none;
  text-decoration: none;
}

button.el-button-destructive {
  background: rgba(239, 68, 68, 0.12);
  color: var(--el-color-danger);
  box-shadow: none;
}
button.el-button-destructive:hover {
  background: rgba(239, 68, 68, 0.20);
  filter: none;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--el-color-surface);
  border-radius: var(--el-radius-lg);
  overflow: hidden;
  box-shadow: var(--el-shadow-xs);
  margin-bottom: var(--el-space-5);
}
thead th {
  background: var(--el-color-surface-alt);
  color: var(--el-color-text-secondary);
  font-weight: 700;
  font-size: var(--el-text-xs);
  text-align: left;
  padding: 12px 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--el-color-border);
}
tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--el-color-border);
  font-size: var(--el-text-sm);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr { transition: background-color var(--el-transition); }
tbody tr:hover { background: rgba(79, 70, 229, 0.04); }

.el-logo-mark { width: 36px; height: 36px; flex: 0 0 auto; display: block; }

.el-shell {
  max-width: 720px;
  margin: var(--el-space-10) auto;
  padding: var(--el-space-8);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-xl);
  box-shadow: var(--el-shadow-lg);
  background: var(--el-color-surface);
  position: relative;
  overflow: hidden;
}
.el-shell::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--el-gradient-brand);
}
.el-shell h1 { font-size: var(--el-text-2xl); }

.el-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--el-radius-full);
  background: rgba(15, 23, 42, 0.06);
  color: var(--el-color-text-secondary);
  font-size: var(--el-text-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
[data-theme="dark"] .el-badge {
  background: rgba(241, 245, 249, 0.10);
}
.el-badge.is-success { background: rgba(34, 197, 94, 0.14); color: #15803D; }
[data-theme="dark"] .el-badge.is-success { color: #4ADE80; }
.el-badge.is-warning { background: rgba(245, 158, 11, 0.14); color: #B45309; }
[data-theme="dark"] .el-badge.is-warning { color: #FBBF24; }
.el-badge.is-error, .el-badge.is-danger { background: rgba(239, 68, 68, 0.14); color: #B91C1C; }
[data-theme="dark"] .el-badge.is-error, [data-theme="dark"] .el-badge.is-danger { color: #FCA5A5; }
.el-badge.is-info { background: rgba(79, 70, 229, 0.14); color: var(--el-color-primary-deep); }
[data-theme="dark"] .el-badge.is-info { color: var(--el-color-soft-indigo); }

.el-error {
  color: var(--el-color-danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  padding: var(--el-space-3) var(--el-space-4);
  border-radius: var(--el-radius-md);
  font-weight: 500;
  margin-bottom: var(--el-space-4);
}

.el-banner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  border-radius: var(--el-radius-lg);
  padding: 16px 20px;
  box-shadow: var(--el-shadow-xs);
  border-left: 4px solid var(--el-color-border-strong);
  background: var(--el-color-surface);
  color: var(--el-color-text);
  margin-bottom: var(--el-space-4);
}
.el-banner::before {
  content: 'ⓘ';
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}
.el-banner.is-success { border-left-color: var(--el-color-success); background: rgba(34, 197, 94, 0.08); }
.el-banner.is-success::before { content: '✓'; color: var(--el-color-success); }
.el-banner.is-warning { border-left-color: var(--el-color-warning); background: rgba(245, 158, 11, 0.08); }
.el-banner.is-warning::before { content: '⚠'; color: var(--el-color-warning); }
.el-banner.is-error, .el-banner.is-danger { border-left-color: var(--el-color-danger); background: rgba(239, 68, 68, 0.08); }
.el-banner.is-error::before, .el-banner.is-danger::before { content: '✕'; color: var(--el-color-danger); }
.el-banner.is-info { border-left-color: var(--el-color-primary); background: rgba(79, 70, 229, 0.08); }
.el-banner.is-info::before { content: 'ⓘ'; color: var(--el-color-primary); }

@keyframes el-sparkle-rotate {
  0%, 100% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(15deg) scale(1.1); }
}
.el-banner.is-success::after {
  content: '✨';
  margin-left: auto;
  font-size: 18px;
  animation: el-sparkle-rotate 2s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
  .el-banner.is-success::after { animation: none; }
}

.el-app-shell {
  display: flex;
  min-height: 100vh;
}
.el-app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.el-sidebar {
  width: 260px;
  background: var(--el-color-surface);
  border-right: 1px solid var(--el-color-border);
  padding: var(--el-space-5);
  position: relative;
  overflow: hidden;
  transition: background-color var(--el-transition), border-color var(--el-transition);
}
.el-sidebar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 240px;
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.04), transparent);
  pointer-events: none;
}
.el-sidebar-brand {
  position: relative;
  padding: 12px;
  background: rgba(79, 70, 229, 0.06);
  border-radius: var(--el-radius-lg);
  margin-bottom: var(--el-space-5);
}
[data-theme="dark"] .el-sidebar-brand { background: rgba(129, 140, 248, 0.10); }
.el-brand-row { display: flex; align-items: center; gap: 10px; }
.el-brand-title { margin: 0; font-weight: 900; font-size: var(--el-text-xl); color: var(--el-color-text); }
.el-brand-subtitle { margin: 6px 0 0; font-size: var(--el-text-xs); color: var(--el-color-text-secondary); }

.el-sidebar-gradient {
  margin-top: auto;
  height: 6px;
  border-radius: 999px;
  background: var(--el-gradient-brand);
  opacity: 0.85;
}

.el-sidebar-nav {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.el-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-radius: 12px;
  color: var(--el-color-text-secondary);
  font-size: var(--el-text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: background-color var(--el-transition), color var(--el-transition), transform var(--el-transition);
}
.el-nav-link:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--el-color-primary);
  transform: translateX(2px);
}
.el-nav-link.is-active {
  background: var(--el-gradient-soft);
  color: var(--el-color-primary-deep);
  border-left: 3px solid;
  border-image: var(--el-gradient-brand) 1;
  padding-left: 13px;
}
[data-theme="dark"] .el-nav-link.is-active { color: var(--el-color-soft-indigo); }

.el-app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--el-color-surface);
  border-bottom: 1px solid var(--el-color-border);
  box-shadow: var(--el-shadow-xs);
}
.el-header-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.el-header-school { margin: 0; font-size: var(--el-text-xs); color: var(--el-color-text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
.el-header-title { margin: 4px 0 0; font-size: var(--el-text-3xl); font-weight: 900; letter-spacing: -0.025em; }

.el-user-box {
  display: flex;
  align-items: center;
  gap: 12px;
}
.el-user-meta { display: flex; flex-direction: column; align-items: flex-end; }
.el-user-name { margin: 0; font-weight: 700; font-size: var(--el-text-sm); }
.el-user-email { margin: 0; font-size: var(--el-text-xs); color: var(--el-color-text-secondary); }

.el-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--el-radius-full);
  background: rgba(79, 70, 229, 0.08);
  border: none;
  box-shadow: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--el-color-primary);
  transition: background-color var(--el-transition), transform var(--el-transition);
  padding: 0;
}
.el-theme-toggle:hover { background: rgba(79, 70, 229, 0.16); transform: rotate(20deg); }
.el-theme-toggle svg { width: 20px; height: 20px; }
.el-theme-toggle .el-icon-moon { display: none; }
[data-theme="dark"] .el-theme-toggle .el-icon-sun { display: none; }
[data-theme="dark"] .el-theme-toggle .el-icon-moon { display: inline-block; }

.el-dashboard-content { padding: var(--el-space-6); flex: 1; }

.el-card {
  position: relative;
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-6);
  box-shadow: var(--el-shadow-sm);
  margin-bottom: var(--el-space-5);
  transition: box-shadow var(--el-transition), transform var(--el-transition);
}
.el-card.is-interactive { cursor: pointer; }
.el-card.is-interactive:hover {
  transform: scale(1.01);
  box-shadow: var(--el-shadow-md);
}
.el-card.is-elevated {
  box-shadow: var(--el-shadow-lg);
}
.el-card.is-highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--el-gradient-brand);
  border-radius: var(--el-radius-lg) var(--el-radius-lg) 0 0;
}
.el-card-title-accent {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 9999px;
  background: var(--el-gradient-brand);
  margin-right: 10px;
  vertical-align: middle;
}
.el-card h2 { font-size: var(--el-text-xl); margin-bottom: var(--el-space-4); }
.el-card h3 { font-size: var(--el-text-base); }

.el-metric-grid { display: grid; gap: var(--el-space-4); grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.el-metric {
  position: relative;
  padding: var(--el-space-5);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  background: var(--el-color-surface);
  box-shadow: var(--el-shadow-xs);
  overflow: hidden;
  transition: transform var(--el-transition), box-shadow var(--el-transition);
}
.el-metric::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--el-gradient-brand);
  opacity: 0.85;
}
.el-metric:hover { transform: translateY(-2px); box-shadow: var(--el-shadow-md); }

.el-metric-label {
  margin: 0;
  color: var(--el-color-text-secondary);
  font-size: var(--el-text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.el-metric-value {
  margin: var(--el-space-2) 0 0;
  font-size: var(--el-text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--el-color-text);
}

.el-split-grid { display: grid; gap: var(--el-space-5); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

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

.el-empty-state {
  margin: 0;
  padding: var(--el-space-6);
  text-align: center;
  color: var(--el-color-text-secondary);
  background: var(--el-color-bg-soft);
  border: 1px dashed var(--el-color-border);
  border-radius: var(--el-radius-md);
}

.el-page-intro { display: flex; justify-content: space-between; align-items: center; gap: var(--el-space-3); margin-bottom: var(--el-space-5); }

.el-toolbar { display: flex; flex-wrap: wrap; gap: var(--el-space-3); align-items: end; }
.el-toolbar label { margin: 0; }

.el-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: var(--el-text-xs);
  font-weight: 600;
}
.el-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.el-status.is-success { background: #dcfce7; color: #166534; }
.el-status.is-warning { background: #fef3c7; color: #92400e; }
.el-status.is-danger  { background: #fee2e2; color: #991b1b; }
.el-status.is-info    { background: rgba(79, 70, 229, 0.14); color: var(--el-color-primary-deep); }

.el-landing { max-width: 1140px; margin: 0 auto; padding: var(--el-space-8) var(--el-space-6); display: grid; gap: var(--el-space-7); }

.el-landing-hero {
  position: relative;
  padding: var(--el-space-10) var(--el-space-8);
  border-radius: var(--el-radius-xl);
  border: 1px solid var(--el-color-border);
  background:
    radial-gradient(circle at 90% 0%, rgba(124, 58, 237, 0.18), transparent 42%),
    radial-gradient(circle at 0% 100%, rgba(34, 197, 94, 0.18), transparent 45%),
    var(--el-color-surface);
  box-shadow: var(--el-shadow-lg);
  overflow: hidden;
}
.el-landing-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--el-gradient-brand);
}

.el-landing-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--el-space-3);
  font-weight: 800;
  font-size: var(--el-text-xl);
  color: var(--el-color-text);
  letter-spacing: -0.02em;
}
.el-landing-brand .el-logo-mark { width: 40px; height: 40px; }
.el-landing-brand span {
  background: var(--el-gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.el-landing h1 {
  margin-top: var(--el-space-5);
  font-size: var(--el-text-4xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 22ch;
}

.el-landing-slogan {
  font-size: var(--el-text-lg);
  color: var(--el-color-text-secondary);
  max-width: 60ch;
  line-height: 1.55;
}

.el-landing-cta { display: flex; flex-wrap: wrap; gap: var(--el-space-3); margin-top: var(--el-space-5); }

.el-button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--el-space-3) var(--el-space-5);
  border-radius: var(--el-radius-md);
  border: 1px solid var(--el-color-border-strong);
  color: var(--el-color-text);
  background: var(--el-color-surface);
  font-weight: 600;
  font-size: var(--el-text-sm);
  transition: all var(--el-transition);
}
.el-button-secondary:hover {
  text-decoration: none;
  background: var(--el-color-bg-soft);
  border-color: var(--el-color-primary-blue);
  color: var(--el-color-primary-blue);
}

.el-landing-grid { display: grid; gap: var(--el-space-4); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.el-landing-card {
  padding: var(--el-space-5);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  background: var(--el-color-surface);
  box-shadow: var(--el-shadow-xs);
  transition: transform var(--el-transition), box-shadow var(--el-transition), border-color var(--el-transition);
}
.el-landing-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--el-shadow-md);
  border-color: rgba(37, 99, 235, 0.3);
}
.el-landing-card h3 { margin-bottom: var(--el-space-2); font-size: var(--el-text-base); font-weight: 700; }
.el-landing-card p { color: var(--el-color-text-secondary); font-size: var(--el-text-sm); margin: 0; }

.el-landing-note {
  border-left: 4px solid var(--el-color-primary-purple);
  padding: var(--el-space-4) var(--el-space-5);
  border-radius: var(--el-radius-md);
  background: linear-gradient(90deg, rgba(124,58,237,.06), transparent);
  color: var(--el-color-text-secondary);
}
.el-landing-note p { margin: 0; }

/* Bouton hamburger : masque au-dessus du breakpoint mobile */
.el-nav-toggle { display: none; }
.el-nav-backdrop { display: none; }

@media (max-width: 920px) {
  /* --- Sidebar en drawer hors-ecran --- */
  .el-sidebar {
    position: fixed;
    top: 0; bottom: 0; left: 0;
    width: min(84vw, 300px);
    height: 100vh;
    overflow-y: auto;
    z-index: 60;
    border-right: 1px solid var(--el-color-border);
    transform: translateX(-100%);
    transition: transform 0.28s ease;
    box-shadow: var(--el-shadow-lg);
  }
  .el-app-shell.is-nav-open .el-sidebar { transform: translateX(0); }
  .el-nav-backdrop {
    display: block;
    position: fixed; inset: 0;
    background: rgba(15, 23, 42, 0.45);
    opacity: 0; visibility: hidden;
    transition: opacity 0.28s ease, visibility 0.28s ease;
    z-index: 55;
  }
  .el-app-shell.is-nav-open .el-nav-backdrop { opacity: 1; visibility: visible; }
  .el-app-main { padding: 0; width: 100%; }

  /* --- Header : hamburger visible + condense --- */
  .el-nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; min-height: 42px; padding: 0; flex: 0 0 auto;
    border-radius: var(--el-radius-md);
    background: rgba(79, 70, 229, 0.08);
    color: var(--el-color-primary);
    box-shadow: none;
  }
  .el-nav-toggle:hover { background: rgba(79, 70, 229, 0.16); transform: none; filter: none; }
  .el-nav-toggle svg { width: 22px; height: 22px; }
  .el-app-header { gap: var(--el-space-3); padding: 12px 16px; }
  .el-header-title { font-size: var(--el-text-xl); }
  .el-header-school { font-size: 10px; }
  .el-user-email { display: none; }
  .el-dashboard-content { padding: var(--el-space-4); }

  /* --- Tables : scroll horizontal plutot que debordement --- */
  .el-dashboard-content table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* --- Formulaires : plein largeur, pas de min-width qui deborde --- */
  input, textarea, select { min-width: 0; width: 100%; }
  .el-page-intro { flex-wrap: wrap; }

  /* --- Landing / shell --- */
  .el-landing { padding: var(--el-space-5) var(--el-space-4); }
  .el-landing-hero { padding: var(--el-space-7) var(--el-space-5); }
  .el-landing h1 { font-size: var(--el-text-3xl); }
  .el-shell { margin: var(--el-space-5) var(--el-space-4); padding: var(--el-space-6); }
}

@media (max-width: 560px) {
  .el-header-title { font-size: var(--el-text-lg); }
  .el-dashboard-content { padding: var(--el-space-3); }
  .el-user-name { display: none; }
  .el-header-title { line-height: 1.15; }
}

/* ============================================================
   Patterns decoratifs et nouveaux composants (Klassly-style)
   ============================================================ */

.el-bg-dot-pattern {
  background-image: var(--el-gradient-dot-pattern);
  background-size: 24px 24px;
}

/* Empty state */
.el-empty {
  text-align: center;
  padding: 48px 24px;
  background: var(--el-color-surface);
  border-radius: var(--el-radius-lg);
  border: 1px dashed var(--el-color-border);
  margin-bottom: var(--el-space-5);
}
.el-empty-illustration {
  width: 96px;
  height: 96px;
  margin: 0 auto var(--el-space-4);
  display: block;
}
.el-empty-title {
  font-size: var(--el-text-lg);
  font-weight: 800;
  margin: 0 0 var(--el-space-2);
  color: var(--el-color-text);
}
.el-empty-message {
  color: var(--el-color-text-secondary);
  margin: 0 0 var(--el-space-5);
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

/* Avatars */
.el-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--el-radius-full);
  color: #fff;
  font-weight: 700;
  font-size: var(--el-text-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  background: linear-gradient(135deg, #4F46E5, #7C3AED);
}
.el-avatar.is-small { width: 32px; height: 32px; font-size: var(--el-text-xs); }
.el-avatar.is-large { width: 56px; height: 56px; font-size: var(--el-text-lg); }
.el-avatar.is-palette-1 { background: linear-gradient(135deg, #4F46E5, #7C3AED); }
.el-avatar.is-palette-2 { background: linear-gradient(135deg, #14B8A6, #06B6D4); }
.el-avatar.is-palette-3 { background: linear-gradient(135deg, #EC4899, #F43F5E); }
.el-avatar.is-palette-4 { background: linear-gradient(135deg, #F59E0B, #EF4444); }
.el-avatar.is-palette-5 { background: linear-gradient(135deg, #7C3AED, #C026D3); }
.el-avatar.is-palette-6 { background: linear-gradient(135deg, #C026D3, #F43F5E); }

/* Loading skeleton */
.el-skeleton {
  display: inline-block;
  background: linear-gradient(90deg, var(--el-color-bg-soft) 0%, var(--el-color-surface-alt) 50%, var(--el-color-bg-soft) 100%);
  background-size: 200% 100%;
  border-radius: var(--el-radius-sm);
  animation: el-skeleton-shimmer 1.5s linear infinite;
  min-height: 1em;
}
@keyframes el-skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
  .el-skeleton { animation: none; }
}

/* Confetti (banners de succes importants) */
@keyframes el-confetti-fall {
  0% { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(60px) rotate(360deg); opacity: 0; }
}
.el-confetti {
  position: absolute;
  top: 0;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  pointer-events: none;
  animation: el-confetti-fall 1s ease-out forwards;
}
@media (prefers-reduced-motion: reduce) {
  .el-confetti { display: none; }
}

/* Animations globales — respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  button:hover, .el-card.is-interactive:hover {
    transform: none !important;
  }
}

/* ============================================================
   Klassly-feed : feed, composer, post cards, comments
   ============================================================ */

.el-feed {
  max-width: 720px;
  margin: 0 auto;
}

.el-feed-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--el-color-text-secondary);
}

.el-feed-load-more {
  text-align: center;
  margin: var(--el-space-6) 0;
}

.el-feed-intro {
  margin-bottom: var(--el-space-6);
}
.el-feed-intro h1 {
  margin-bottom: var(--el-space-2);
}
.el-feed-intro p {
  color: var(--el-color-text-secondary);
  margin: 0;
}

/* Class selector tiles (page /class-feed) */
.el-class-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--el-space-4);
  margin-bottom: var(--el-space-5);
}
.el-class-tile {
  display: flex;
  align-items: center;
  gap: var(--el-space-4);
  padding: var(--el-space-5);
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  box-shadow: var(--el-shadow-sm);
  text-decoration: none;
  color: var(--el-color-text);
  transition: transform var(--el-transition), box-shadow var(--el-transition), border-color var(--el-transition);
}
.el-class-tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--el-shadow-md);
  border-color: var(--el-color-primary);
  color: var(--el-color-text);
}
.el-class-tile.is-broadcast {
  position: relative;
  background: linear-gradient(120deg, rgba(79, 70, 229, 0.06), rgba(124, 58, 237, 0.06));
  border-color: var(--el-color-primary);
}
.el-class-tile.is-broadcast::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--el-gradient-brand);
  border-radius: var(--el-radius-lg) var(--el-radius-lg) 0 0;
}
.el-class-tile-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--el-radius-full);
  font-size: 28px;
  background: var(--el-gradient-brand);
  color: #fff;
  flex-shrink: 0;
}
.el-class-tile-body {
  flex: 1;
  min-width: 0;
}
.el-class-tile-title {
  margin: 0 0 4px;
  font-size: var(--el-text-lg);
  font-weight: 800;
  color: var(--el-color-text);
}
.el-class-tile-cta {
  margin: 0;
  font-size: var(--el-text-sm);
  color: var(--el-color-primary);
  font-weight: 600;
}

/* Composer (top sticky) */
.el-feed-composer {
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-4);
  box-shadow: var(--el-shadow-sm);
  margin-bottom: var(--el-space-5);
}
.el-feed-composer-collapsed {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 16px;
  background: var(--el-color-bg-soft);
  border-radius: var(--el-radius-full);
  color: var(--el-color-text-secondary);
  cursor: pointer;
  font-weight: 600;
  transition: background-color var(--el-transition);
}
.el-feed-composer-collapsed:hover { background: var(--el-color-surface-alt); }
.el-feed-composer.is-expanded .el-feed-composer-collapsed { display: none; }
.el-feed-composer-expanded { display: none; }
.el-feed-composer.is-expanded .el-feed-composer-expanded { display: block; }
.el-feed-photo-previews {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.el-feed-photo-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--el-radius-sm);
  border: 1px solid var(--el-color-border);
}

/* Post card */
.el-post-card {
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-5);
  box-shadow: var(--el-shadow-sm);
  margin-bottom: var(--el-space-5);
}
.el-post-header {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: var(--el-space-3);
}
.el-post-header-meta { flex: 1; }
.el-post-author-name {
  font-weight: 700;
  color: var(--el-color-text);
  font-size: var(--el-text-sm);
}
.el-post-meta {
  font-size: var(--el-text-xs);
  color: var(--el-color-text-secondary);
}
.el-post-body {
  font-size: var(--el-text-base);
  line-height: 1.6;
  margin-bottom: var(--el-space-4);
  white-space: pre-wrap;
}
.el-edited-tag {
  display: inline-block;
  margin-left: 6px;
  font-size: var(--el-text-xs);
  color: var(--el-color-text-secondary);
  font-style: italic;
}

/* Photo mosaic */
.el-post-photos {
  display: grid;
  gap: 4px;
  border-radius: var(--el-radius-md);
  overflow: hidden;
  margin-bottom: var(--el-space-4);
}
.el-post-photos img { width: 100%; height: 100%; object-fit: cover; display: block; }
.el-post-photos.is-1 { grid-template-columns: 1fr; }
.el-post-photos.is-1 img { max-height: 480px; }
.el-post-photos.is-2 { grid-template-columns: 1fr 1fr; aspect-ratio: 2 / 1; }
.el-post-photos.is-3 { grid-template-columns: 2fr 1fr; grid-template-rows: 1fr 1fr; aspect-ratio: 2 / 1.2; }
.el-post-photos.is-3 > :first-child { grid-row: span 2; }
.el-post-photos.is-4plus { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; aspect-ratio: 1; }
.el-post-overlay-count {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--el-text-2xl);
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
}
.el-post-overlay-count img { position: absolute; inset: 0; z-index: -1; }

/* Actions (like, comments) */
.el-post-actions {
  display: flex;
  gap: 8px;
  padding-top: var(--el-space-3);
  border-top: 1px solid var(--el-color-border);
}
.el-post-actions-button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--el-radius-md);
  background: transparent;
  color: var(--el-color-text-secondary);
  font-size: var(--el-text-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  box-shadow: none;
  transition: background-color var(--el-transition), color var(--el-transition);
}
.el-post-actions-button:hover {
  background: rgba(79, 70, 229, 0.08);
  color: var(--el-color-primary);
  transform: none;
}
.el-post-actions-button.is-liked {
  color: var(--el-color-primary);
}

/* Comments section */
.el-comments-section {
  margin-top: var(--el-space-3);
  padding-top: var(--el-space-3);
  border-top: 1px solid var(--el-color-border);
}
.el-comment {
  display: flex;
  gap: 8px;
  margin-bottom: var(--el-space-3);
}
.el-comment-bubble {
  flex: 1;
  background: var(--el-color-bg-soft);
  border-radius: var(--el-radius-lg);
  padding: 8px 12px;
}
.el-comment-author {
  font-weight: 700;
  font-size: var(--el-text-sm);
  color: var(--el-color-text);
  display: inline;
  margin-right: 6px;
}
.el-comment-body {
  display: inline;
  font-size: var(--el-text-sm);
  color: var(--el-color-text);
}
.el-comment-meta {
  font-size: var(--el-text-xs);
  color: var(--el-color-text-secondary);
  margin-top: 4px;
}
.el-comment-input {
  width: 100%;
  padding: 10px 16px;
  border-radius: var(--el-radius-full);
  border: 1.5px solid var(--el-color-border);
  font-family: var(--el-font-sans);
  font-size: var(--el-text-sm);
}

/* ============================================================
   Klasswork : homework cards, submissions, grading, badges
   ============================================================ */

.el-homework-card {
  position: relative;
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-left: 4px solid var(--el-color-primary);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-5);
  box-shadow: var(--el-shadow-sm);
  margin-bottom: var(--el-space-4);
  transition: box-shadow var(--el-transition), transform var(--el-transition);
}
.el-homework-card.is-interactive { cursor: pointer; }
.el-homework-card.is-interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--el-shadow-md);
}
.el-homework-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--el-space-3);
}
.el-homework-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 9999px;
  flex-shrink: 0;
  background: var(--el-color-primary);
}
.el-homework-title {
  font-weight: 800;
  font-size: var(--el-text-lg);
  margin: 0;
  flex: 1;
  color: var(--el-color-text);
}
.el-homework-meta {
  font-size: var(--el-text-xs);
  color: var(--el-color-text-secondary);
  margin: 0 0 var(--el-space-3);
}
.el-homework-description {
  font-size: var(--el-text-base);
  line-height: 1.6;
  margin-bottom: var(--el-space-4);
  white-space: pre-wrap;
  color: var(--el-color-text);
}
.el-homework-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--el-color-primary);
  margin-bottom: var(--el-space-3);
}
.el-homework-attachments {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
  margin-bottom: var(--el-space-4);
}
.el-homework-attachment {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--el-color-bg-soft);
  border-radius: var(--el-radius-md);
  border: 1px solid var(--el-color-border);
  text-decoration: none;
  color: var(--el-color-text);
  font-size: var(--el-text-sm);
  transition: background-color var(--el-transition);
}
.el-homework-attachment:hover { background: var(--el-color-surface-alt); color: var(--el-color-primary); }
.el-homework-attachment-icon { font-size: 20px; flex-shrink: 0; }
.el-homework-attachment-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.el-homework-stats {
  font-size: var(--el-text-sm);
  color: var(--el-color-text-secondary);
  font-weight: 600;
}
.el-homework-actions {
  display: flex;
  gap: 8px;
  margin-top: var(--el-space-3);
  padding-top: var(--el-space-3);
  border-top: 1px solid var(--el-color-border);
}

/* Submission */
.el-submission-form {
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-5);
  box-shadow: var(--el-shadow-sm);
  margin-bottom: var(--el-space-5);
}
.el-submission-card {
  background: var(--el-color-surface);
  border: 1px solid var(--el-color-border);
  border-radius: var(--el-radius-lg);
  padding: var(--el-space-4);
  box-shadow: var(--el-shadow-xs);
  margin-bottom: var(--el-space-3);
}
.el-submission-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--el-space-3);
}
.el-submission-student-name { font-weight: 700; font-size: var(--el-text-sm); flex: 1; color: var(--el-color-text); }
.el-submission-body {
  font-size: var(--el-text-sm);
  line-height: 1.6;
  white-space: pre-wrap;
  margin-bottom: var(--el-space-3);
  color: var(--el-color-text);
}
.el-submission-photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 6px;
  margin-bottom: var(--el-space-3);
}
.el-submission-photos img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--el-radius-sm);
  border: 1px solid var(--el-color-border);
}
.el-submission-grade {
  margin-top: var(--el-space-3);
  padding-top: var(--el-space-3);
  border-top: 1px solid var(--el-color-border);
}

/* Grade badge */
.el-grade-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--el-radius-full);
  font-weight: 800;
  font-size: var(--el-text-sm);
}
.el-grade-badge.is-good { background: rgba(34, 197, 94, 0.14); color: #15803D; }
[data-theme="dark"] .el-grade-badge.is-good { color: #4ADE80; }
.el-grade-badge.is-medium { background: rgba(245, 158, 11, 0.14); color: #B45309; }
[data-theme="dark"] .el-grade-badge.is-medium { color: #FBBF24; }
.el-grade-badge.is-low { background: rgba(239, 68, 68, 0.14); color: #B91C1C; }
[data-theme="dark"] .el-grade-badge.is-low { color: #FCA5A5; }
.el-grade-badge.is-pending { background: rgba(15, 23, 42, 0.06); color: var(--el-color-text-secondary); }
[data-theme="dark"] .el-grade-badge.is-pending { background: rgba(241, 245, 249, 0.10); }

/* Status badges */
.el-status-late {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: var(--el-radius-full);
  font-size: var(--el-text-xs); font-weight: 700;
  background: rgba(239, 68, 68, 0.14); color: #B91C1C;
}
[data-theme="dark"] .el-status-late { color: #FCA5A5; }
.el-status-submitted {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: var(--el-radius-full);
  font-size: var(--el-text-xs); font-weight: 700;
  background: rgba(34, 197, 94, 0.14); color: #15803D;
}
[data-theme="dark"] .el-status-submitted { color: #4ADE80; }
.el-status-pending {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: var(--el-radius-full);
  font-size: var(--el-text-xs); font-weight: 700;
  background: rgba(245, 158, 11, 0.14); color: #B45309;
}
[data-theme="dark"] .el-status-pending { color: #FBBF24; }
.el-status-graded {
  display: inline-flex; align-items: center;
  padding: 3px 10px; border-radius: var(--el-radius-full);
  font-size: var(--el-text-xs); font-weight: 700;
  background: rgba(79, 70, 229, 0.14); color: var(--el-color-primary-deep);
}
[data-theme="dark"] .el-status-graded { color: var(--el-color-soft-indigo); }