/* ==========================================================================
   L'ATELIER FRANÇAIS — INTERACTIVE COMPONENTS
   Level Test Quiz, Booking Engine, Student Portal, Modals & Toast
   ========================================================================== */

/* ==========================================================================
   ACCESSIBLE MODALS (HTML5 <dialog>)
   ========================================================================== */

dialog.modal-dialog {
  border: none;
  border-radius: var(--radius-lg);
  padding: 0;
  max-width: 640px;
  width: 90vw;
  background: #FFFFFF;
  box-shadow: 0 25px 50px -12px rgba(11, 19, 43, 0.35);
  margin: auto;
  position: fixed;
  inset: 0;
  overflow: hidden;
  opacity: 0;
  transform: scale(0.95) translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), overlay 0.25s allow-discrete, display 0.25s allow-discrete;
}

dialog.modal-dialog[open] {
  opacity: 1;
  transform: scale(1) translateY(0);
}

@starting-style {
  dialog.modal-dialog[open] {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
}

dialog.modal-dialog::backdrop {
  background: rgba(11, 19, 43, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.25s ease, overlay 0.25s allow-discrete, display 0.25s allow-discrete;
}

dialog.modal-dialog[open]::backdrop {
  opacity: 1;
}

@starting-style {
  dialog.modal-dialog[open]::backdrop {
    opacity: 0;
  }
}

.modal-header {
  padding: 1.5rem 2rem;
  background: var(--color-bg-page);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.35rem;
  color: var(--color-navy);
  margin: 0;
}

.modal-close-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.05);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--color-navy);
}

.modal-body {
  padding: 2rem;
  max-height: 80vh;
  overflow-y: auto;
}

/* ==========================================================================
   LEVEL ASSESSMENT TEST (Interactive CEFR Engine)
   ========================================================================== */

.quiz-container {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 860px;
  margin: 0 auto;
}

.quiz-header {
  background: linear-gradient(135deg, var(--color-navy) 0%, #1a2f64 100%);
  color: #FFFFFF;
  padding: 2rem 2.5rem;
  position: relative;
}

.quiz-header h3 {
  color: #FFFFFF;
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.quiz-header p {
  color: #CBD5E1;
  font-size: 0.95rem;
  margin: 0;
}

.quiz-progress-bar-wrap {
  margin-top: 1.5rem;
  background: rgba(255, 255, 255, 0.15);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.quiz-progress-fill {
  background: linear-gradient(90deg, #F59E0B, #10B981);
  height: 100%;
  width: 0%;
  transition: width 0.35s ease;
  border-radius: 4px;
}

.quiz-meta-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #94A3B8;
  margin-top: 0.5rem;
  font-weight: 600;
}

.quiz-body {
  padding: 2.5rem;
}

.question-card {
  display: none;
  animation: fadeIn 0.3s ease;
}

.question-card.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.question-level-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.question-level-badge.a1 { background: #E0F2FE; color: #0284C7; }
.question-level-badge.a2 { background: #DCFCE7; color: #16A34A; }
.question-level-badge.b1 { background: #FEF3C7; color: #D97706; }
.question-level-badge.b2 { background: #FEE2E2; color: #DC2626; }
.question-level-badge.c1 { background: #F3E8FF; color: #9333EA; }

.question-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-navy);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.question-prompt {
  font-size: 1.05rem;
  color: #334155;
  background: var(--color-bg-page);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-blue-vibrant);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.4rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: #FFFFFF;
}

.option-item:hover {
  border-color: var(--color-blue-vibrant);
  background: var(--color-blue-subtle);
  transform: translateX(4px);
}

.option-item.selected {
  border-color: var(--color-blue-vibrant);
  background: #EFF6FF;
  box-shadow: 0 0 0 1px var(--color-blue-vibrant);
}

.option-indicator {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.option-item.selected .option-indicator {
  background: var(--color-blue-vibrant);
  border-color: var(--color-blue-vibrant);
  color: #FFFFFF;
}

.option-text {
  font-size: 0.95rem;
  color: var(--color-navy);
  font-weight: 500;
}

.quiz-footer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

/* Quiz Results Screen */
.quiz-results-card {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
}

.results-badge-wrap {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold) 0%, #F59E0B 100%);
  color: #FFFFFF;
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(217, 119, 6, 0.35);
}

.results-level-code {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}

.results-level-sub {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.results-title {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.results-summary {
  font-size: 1.05rem;
  color: #475569;
  max-width: 620px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.results-details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  text-align: left;
}

.result-stat-box {
  background: var(--color-bg-page);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-warm);
}

.result-stat-box h6 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.result-stat-box .stat-val {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-navy);
}

.recommended-course-box {
  background: #F8FAFC;
  border: 2px solid var(--color-blue-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  text-align: left;
}

.recommended-course-box h4 {
  color: var(--color-navy);
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   INTERACTIVE BOOKING ENGINE (Multi-step)
   ========================================================================== */

.booking-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
}

.booking-stepper::before {
  content: '';
  position: absolute;
  top: 18px;
  left: 30px;
  right: 30px;
  height: 2px;
  background: var(--color-border);
  z-index: 1;
}

.step-indicator {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.step-bubble {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.step-indicator.active .step-bubble {
  background: var(--color-blue-vibrant);
  border-color: var(--color-blue-vibrant);
  color: #FFFFFF;
  box-shadow: 0 0 0 4px var(--color-blue-subtle);
}

.step-indicator.completed .step-bubble {
  background: #10B981;
  border-color: #10B981;
  color: #FFFFFF;
}

.step-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.step-indicator.active .step-label {
  color: var(--color-navy);
}

.booking-step-panel {
  display: none;
}

.booking-step-panel.active {
  display: block;
}

.service-select-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.service-option-card {
  padding: 1.5rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: #FFFFFF;
}

.service-option-card:hover {
  border-color: var(--color-blue-vibrant);
  transform: translateY(-2px);
}

.service-option-card.selected {
  border-color: var(--color-blue-vibrant);
  background: var(--color-blue-subtle);
  box-shadow: 0 0 0 1px var(--color-blue-vibrant);
}

.service-option-card h5 {
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.service-option-card .service-rate {
  font-weight: 700;
  color: var(--color-gold);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.service-option-card p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

/* Time & Date selector */
.datetime-selector-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.calendar-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background: #FFFFFF;
}

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

.calendar-month-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-navy);
}

.calendar-days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.35rem;
  text-align: center;
}

.calendar-day-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-light);
  padding: 0.35rem 0;
}

.cal-day {
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cal-day:hover:not(.disabled) {
  background: var(--color-blue-subtle);
  color: var(--color-blue-vibrant);
}

.cal-day.active {
  background: var(--color-navy);
  color: #FFFFFF;
  font-weight: 700;
}

.cal-day.disabled {
  color: #CBD5E1;
  cursor: not-allowed;
}

.time-slots-container h5 {
  font-size: 0.95rem;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.time-slots-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.time-chip {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  background: #FFFFFF;
  transition: all var(--transition-fast);
}

.time-chip:hover {
  border-color: var(--color-blue-vibrant);
  color: var(--color-blue-vibrant);
}

.time-chip.selected {
  background: var(--color-blue-vibrant);
  color: #FFFFFF;
  border-color: var(--color-blue-vibrant);
}

/* Form inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-navy);
  background: #FFFFFF;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-blue-vibrant);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* ==========================================================================
   STUDENT PORTAL DASHBOARD (Live simulation)
   ========================================================================== */

.portal-dashboard-wrap {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.portal-hero-banner {
  background: linear-gradient(135deg, var(--color-navy) 0%, #1e3a7a 100%);
  color: #FFFFFF;
  padding: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.student-greeting {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.student-pfp {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.3);
  background: var(--color-gold);
  color: #FFFFFF;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.student-info h3 {
  color: #FFFFFF;
  font-size: 1.6rem;
  margin-bottom: 0.25rem;
}

.student-info p {
  color: #CBD5E1;
  font-size: 0.9rem;
  margin: 0;
}

.portal-tabs-nav {
  display: flex;
  background: var(--color-bg-page);
  border-bottom: 1px solid var(--color-border);
  padding: 0 2rem;
  gap: 2rem;
}

.portal-tab-btn {
  padding: 1.25rem 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-muted);
  position: relative;
  transition: color var(--transition-fast);
}

.portal-tab-btn:hover, .portal-tab-btn.active {
  color: var(--color-navy);
}

.portal-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-blue-vibrant);
  border-radius: 3px 3px 0 0;
}

.portal-panel-body {
  padding: 2.5rem;
}

/* Upcoming class card */
.next-class-card {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border: 1.5px solid #BFDBFE;
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.class-countdown-wrap {
  display: flex;
  gap: 0.85rem;
}

.countdown-unit {
  background: #FFFFFF;
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  text-align: center;
  min-width: 55px;
  box-shadow: var(--shadow-sm);
}

.unit-val {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1;
}

.unit-lbl {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* Recordings & Homework lists */
.recordings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.recording-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
}

.recording-card h5 {
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 0.35rem;
}

.recording-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.homework-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  background: #FFFFFF;
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast-msg {
  pointer-events: auto;
  background: #FFFFFF;
  color: var(--color-navy);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-blue-vibrant);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  animation: slideInToast 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 380px;
}

.toast-msg.success {
  border-left-color: #10B981;
}

@keyframes slideInToast {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 768px) {
  .datetime-selector-grid,
  .service-select-grid,
  .results-details-grid {
    grid-template-columns: 1fr;
  }
  
  .portal-tabs-nav {
    overflow-x: auto;
  }
}