/* ==========================================================================
   assets/css/serie03.css
   Style dédié pour la Série N°3 d'exercices (Structures itératives)
   Informatique 4e Année Scientifique (Bac 2026)
   ========================================================================== */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.img-modal-overlay,
.img-modal-close,
.chapters-drawer,
.drawer-toggle-btn {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

[data-theme="dark"] {
  --bg-card: #1e293b;
  --bg-subtle: #0f172a;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  background-color: #0b1120;
  color: #f8fafc;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #f8fafc;
  color: var(--text-main);
}

[data-theme="dark"] body {
  background-color: #0b1120;
  color: #f8fafc;
}

/* Card d'exercice */
.exercise-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}

.exercise-section:hover {
  border-color: #93c5fd;
}

[data-theme="dark"] .exercise-section:hover {
  border-color: #3b82f6;
}

/* Solution & Help Accordion */
.solution-details {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  transition: all 0.2s ease;
}

.solution-details[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.solution-summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--primary);
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* QCM Interactive Exercises */
.qcm-exercise {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.qcm-exercise .question-title {
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

/* Custom Table Layout */
.custom-table {
  background-color: var(--bg-card);
  border-radius: 0.5rem;
  overflow: hidden;
}

.custom-table th {
  background-color: var(--bg-subtle);
  color: var(--text-main);
}

/* High Contrast Difficulty Badges */
.badge-difficulty-easy {
  background-color: #d1fae5 !important;
  color: #065f46 !important;
  border: 1px solid #10b981 !important;
  font-weight: 700;
}

.badge-difficulty-medium {
  background-color: #fef3c7 !important;
  color: #78350f !important;
  border: 1px solid #f59e0b !important;
  font-weight: 700;
}

.badge-difficulty-hard {
  background-color: #fee2e2 !important;
  color: #991b1b !important;
  border: 1px solid #ef4444 !important;
  font-weight: 700;
}

[data-theme="dark"] .badge-difficulty-easy {
  background-color: rgba(16, 185, 129, 0.25) !important;
  color: #34d399 !important;
  border-color: rgba(16, 185, 129, 0.5) !important;
}

[data-theme="dark"] .badge-difficulty-medium {
  background-color: rgba(245, 158, 11, 0.25) !important;
  color: #fbbf24 !important;
  border-color: rgba(245, 158, 11, 0.5) !important;
}

[data-theme="dark"] .badge-difficulty-hard {
  background-color: rgba(239, 68, 68, 0.25) !important;
  color: #f87171 !important;
  border-color: rgba(239, 68, 68, 0.5) !important;
}

/* Trace Input Validation Feedback */
.trace-input.is-valid-answer {
  background-color: #d1fae5 !important;
  border-color: #10b981 !important;
  color: #065f46 !important;
  font-weight: bold;
}

.trace-input.is-invalid-answer {
  background-color: #fee2e2 !important;
  border-color: #ef4444 !important;
  color: #991b1b !important;
}

/* Print Optimization */
@media print {
  .navbar-custom, .hero-section, #theme-toggle-btn, .btn, .d-print-none, .alert-light {
    display: none !important;
  }

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

  .qcm-exercise, table {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    break-inside: avoid;
  }
}

/* Blocs de code et Bouton Copier */
pre,
pre.p-3 {
  position: relative !important;
  background-color: #282c34 !important;
  color: #abb2bf !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  border-radius: var(--radius-md, 12px) !important;
  padding: 1.25rem 1.25rem 1rem 1.25rem !important;
  padding-top: 2.5rem !important;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace !important;
  font-size: 0.92rem !important;
  line-height: 1.6 !important;
  overflow-x: auto !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2) !important;
}

[data-theme="dark"] pre,
[data-theme="dark"] pre.p-3 {
  background-color: #1e1e2e !important;
  border-color: rgba(255, 255, 255, 0.15) !important;
}

pre code.hljs,
pre code {
  background: transparent !important;
  padding: 0 !important;
  font-family: inherit !important;
  font-size: inherit !important;
}

.bd-clipboard {
  position: absolute !important;
  top: 0.55rem !important;
  right: 0.65rem !important;
  z-index: 10 !important;
  display: block !important;
}

.btn-clipboard {
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  font-size: 0.75rem !important;
  font-weight: 500 !important;
  line-height: 1 !important;
  color: #e2e8f0 !important;
  background: rgba(30, 41, 59, 0.85) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
  padding: 0.35rem 0.75rem !important;
  border-radius: 6px !important;
  cursor: pointer !important;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25) !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  user-select: none !important;
  white-space: nowrap !important;
}

.btn-clipboard:hover {
  background: rgba(51, 65, 85, 0.95) !important;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.4) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.35) !important;
}

.btn-clipboard.copied {
  background: #10b981 !important;
  border-color: #059669 !important;
  color: #ffffff !important;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.4) !important;
}

@media print {
  .bd-clipboard,
  .btn-clipboard {
    display: none !important;
  }
}

/* Simulation interactive inputs & controls */
.bg-dark input[type="text"] {
  background-color: #1e293b !important;
  color: #f8fafc !important;
  border: 1px solid #475569 !important;
  border-radius: 6px !important;
  padding: 0.25rem 0.6rem !important;
  outline: none !important;
  font-family: inherit !important;
  font-weight: 600 !important;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bg-dark input[type="text"]:focus {
  border-color: #38bdf8 !important;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.3) !important;
}