/* ==========================================================================
   SAÉ S5 - Application Intelligente (BUT 3 INFO FI & APP - 2026-2027)
   Feuille de style principale (Responsive, Thème Sombre, Optimisée Impression)
   ========================================================================== */

:root {
  /* Palette Claire */
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-card-subtle: #f8fafc;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #dbeafe;
  --primary-border: #93c5fd;

  --secondary: #0284c7;
  --secondary-light: #e0f2fe;

  --accent-emerald: #059669;
  --accent-emerald-light: #d1fae5;
  --accent-amber: #d97706;
  --accent-amber-light: #fef3c7;
  --accent-purple: #7c3aed;
  --accent-purple-light: #ede9fe;
  --accent-rose: #e11d48;
  --accent-rose-light: #ffe4e6;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

[data-theme="dark"] {
  /* Palette Sombre */
  --bg-main: #0b0f19;
  --bg-card: #111827;
  --bg-card-hover: #1f2937;
  --bg-card-subtle: #162032;
  --border-color: #243247;
  --border-focus: #60a5fa;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-light: #1e293b;
  --primary-border: #3b82f6;

  --secondary: #38bdf8;
  --secondary-light: #172554;

  --accent-emerald: #10b981;
  --accent-emerald-light: #064e3b;
  --accent-amber: #f59e0b;
  --accent-amber-light: #451a03;
  --accent-purple: #a855f7;
  --accent-purple-light: #3b0764;
  --accent-rose: #f43f5e;
  --accent-rose-light: #4c0519;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

p {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-mono);
}

.code-pill {
  font-family: var(--font-mono);
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  font-weight: 600;
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="dark"] .navbar {
  background-color: rgba(11, 15, 25, 0.94);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 1.5rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.brand-logos {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-iut {
  height: 46px;
  width: auto;
  object-fit: contain;
  background-color: #ffffff;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.logo-info {
  height: 46px;
  width: 46px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  list-style: none;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary);
  background-color: var(--primary-light);
  text-decoration: none;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-icon {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-border);
}

/* Hero Section */
.hero {
  padding: 3.5rem 0 2.5rem;
  background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg-main) 100%);
  border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .hero {
  background: linear-gradient(180deg, #131d31 0%, var(--bg-main) 100%);
}

.hero-badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-badge-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.hero-badge-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.15;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 900px;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  padding: 1.1rem 1.4rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
}

.hero-meta-icon {
  width: 22px;
  height: 22px;
  color: var(--primary);
  flex-shrink: 0;
}

.hero-meta-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-meta-val {
  font-weight: 700;
  color: var(--text-primary);
}

.hero-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

/* Sections */
.section {
  padding: 3.5rem 0;
}

.section-alt {
  background-color: var(--bg-card-subtle);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 2.25rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 0.4rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 820px;
}

/* Modèles & Infrastructure Cards */
.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.model-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
  position: relative;
}

.model-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.model-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.model-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-llm {
  background-color: var(--accent-purple-light);
  color: var(--accent-purple);
}

.badge-vlm {
  background-color: var(--accent-emerald-light);
  color: var(--accent-emerald);
}

.badge-embed {
  background-color: var(--secondary-light);
  color: var(--secondary);
}

.model-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.model-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  color: var(--primary);
}

.model-role {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.model-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.model-specs {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.model-spec-row {
  display: flex;
  justify-content: space-between;
}

.model-spec-label {
  color: var(--text-muted);
}

.model-spec-val {
  font-weight: 700;
  font-family: var(--font-mono);
}

/* Compétences Grid */
.competences-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.competence-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
}

.comp-number {
  background-color: var(--primary-light);
  color: var(--primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.comp-content h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.comp-content p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

/* Control Bar (Recherche & Filtres) */
.controls-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.search-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.search-box {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.85rem;
  font-size: 0.95rem;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-clear {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: none;
  font-size: 1rem;
}

.search-clear:hover {
  color: var(--text-primary);
}

.view-toggles {
  display: flex;
  gap: 0.35rem;
  background-color: var(--bg-main);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.view-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.view-btn.active {
  background-color: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.filters-row {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.filter-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.filter-group-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 0.5rem;
  min-width: 75px;
}

.filter-chip {
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-border);
}

.filter-chip.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.results-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.results-count-badge {
  font-weight: 800;
  color: var(--primary);
}

/* Sujets Grid */
.sujets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(370px, 1fr));
  gap: 1.75rem;
}

.sujet-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.sujet-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.sujet-card-header {
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-card-subtle);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.sujet-number-pill {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background-color: var(--primary);
  color: #ffffff;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.sujet-author {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.sujet-card-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.sujet-title {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.sujet-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.tag-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-main);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.sujet-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.sujet-highlight-box {
  background-color: var(--bg-main);
  border-left: 3px solid var(--primary);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.84rem;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.sujet-highlight-title {
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sujet-features-preview {
  margin-bottom: 1.25rem;
}

.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.feature-item {
  font-size: 0.84rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.feature-icon {
  width: 15px;
  height: 15px;
  color: var(--accent-emerald);
  flex-shrink: 0;
  margin-top: 3px;
}

.sujet-card-footer {
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.sujet-models-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.model-tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.card-actions {
  display: flex;
  gap: 0.4rem;
}

.btn-card-action {
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.btn-card-action:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary-border);
}

.btn-card-primary {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-card-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
}

/* Table View */
.sujets-table-wrapper {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
  display: none;
}

.sujets-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.sujets-table th {
  background-color: var(--bg-card-subtle);
  padding: 0.9rem 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.sujets-table td {
  padding: 1.1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.sujets-table tr:hover td {
  background-color: var(--bg-card-hover);
}

/* Consignes & Règles */
.consignes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.consigne-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.consigne-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.consigne-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.icon-red { background-color: var(--accent-rose-light); color: var(--accent-rose); }
.icon-blue { background-color: var(--primary-light); color: var(--primary); }
.icon-emerald { background-color: var(--accent-emerald-light); color: var(--accent-emerald); }
.icon-amber { background-color: var(--accent-amber-light); color: var(--accent-amber); }
.icon-purple { background-color: var(--accent-purple-light); color: var(--accent-purple); }

.consigne-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
}

.consigne-content p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.consigne-checklist {
  list-style: none;
  margin-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.consigne-check-item {
  font-size: 0.84rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

/* Modal Détails Sujet */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-dialog {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  animation: modalFadeIn 200ms ease;
  overflow: hidden;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 1.25rem 1.6rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-card-subtle);
}

.modal-body {
  padding: 1.8rem;
  overflow-y: auto;
  line-height: 1.65;
}

.modal-footer {
  padding: 1rem 1.6rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background-color: var(--text-primary);
  color: var(--text-inverse);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: toastSlideUp 200ms ease;
}

@keyframes toastSlideUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3.5rem 1rem;
  background-color: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  display: none;
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.empty-state-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.empty-state-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Formulaire d'inscription & Membres */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.form-label-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: normal;
  margin-left: 0.3rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.members-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.member-row-card {
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  position: relative;
}

.member-card-title {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.member-inputs-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.2fr 1.8fr 1fr;
  gap: 0.6rem;
}

@media (max-width: 768px) {
  .member-inputs-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 500px) {
  .member-inputs-grid {
    grid-template-columns: 1fr;
  }
}

.btn-remove-member {
  background: none;
  border: none;
  color: var(--accent-rose);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-remove-member:hover {
  text-decoration: underline;
}

.btn-add-member {
  background-color: var(--bg-main);
  border: 1px dashed var(--border-color);
  color: var(--primary);
  width: 100%;
  padding: 0.65rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn-add-member:hover {
  background-color: var(--primary-light);
  border-color: var(--primary);
}

.registration-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--accent-emerald-light);
  color: var(--accent-emerald);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--accent-emerald);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sujet-card.registered {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
}

.registration-success-box {
  background-color: var(--accent-emerald-light);
  border: 1px solid var(--accent-emerald);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.action-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.action-card-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.action-card-item:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Footer */
.footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.footer-logos {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Responsive Utilities */
@media (max-width: 900px) {
  .navbar-nav {
    display: none;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .sujets-grid {
    grid-template-columns: 1fr;
  }
  .search-row {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 600px) {
  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
  }
  .navbar-container {
    height: 64px;
  }
  .brand-title {
    font-size: 0.95rem;
  }
  .brand-subtitle {
    display: none;
  }
  .logo-iut {
    height: 36px;
  }
  .logo-info {
    height: 36px;
    width: 36px;
  }
}

/* ==========================================================================
   Print Stylesheet (@media print)
   Optimisé pour l'impression ou l'export PDF par les enseignants et étudiants
   ========================================================================== */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt;
  }

  .navbar, .controls-panel, .btn-icon, .card-actions, .hero-quick-actions, .footer-bottom a, .toast-container, .modal-overlay {
    display: none !important;
  }

  .hero {
    background: none !important;
    padding: 1rem 0 !important;
    border-bottom: 2px solid #333 !important;
  }

  .hero-title {
    font-size: 20pt !important;
    color: #000000 !important;
  }

  .hero-title .gradient-text {
    -webkit-text-fill-color: #000000 !important;
  }

  .sujets-grid {
    display: block !important;
  }

  .sujet-card {
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 1.5rem !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }

  .sujet-card-header {
    background-color: #f0f0f0 !important;
  }

  .consignes-grid {
    display: block !important;
  }

  .consigne-card {
    break-inside: avoid;
    margin-bottom: 1rem !important;
  }

  a[href]::after {
    content: none !important;
  }
}