/* ==========================================================================
   أنماط خريطة المناهج التفاعلية والمقررات الدراسية
   ========================================================================== */

/* Level Tabs Container */
.curriculum-nav-wrapper {
  margin-bottom: 28px;
}

.level-tabs-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.level-tab-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 12px 18px;
  cursor: pointer;
  transition: var(--transition);
  min-width: 220px;
  text-align: right;
  flex-shrink: 0;
}

.level-tab-btn:hover {
  border-color: var(--border-strong);
  background: var(--bg-card);
}

.level-tab-btn.active {
  background: var(--bg-card);
  border-color: var(--on-surface-primary);
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.25);
}

.level-num {
  font-family: var(--font-latin);
  font-size: 1.5rem;
  font-weight: 900;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--overlay-1);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.level-tab-btn.active .level-num {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--on-surface-primary);
}

.level-info {
  display: flex;
  flex-direction: column;
}

.level-name {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
}

.level-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.level-tab-btn.active .level-badge {
  color: var(--on-surface-primary);
}

/* Filters & Search Bar */
.curriculum-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  margin-bottom: 28px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-pill-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 14px;
  font-family: var(--font-arabic);
  font-size: 0.8125rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.filter-pill-btn:hover {
  background: var(--overlay-1);
  color: var(--text-primary);
}

.filter-pill-btn.active {
  background: var(--color-primary-glow);
  color: var(--on-surface-primary);
  border-color: var(--border-accent);
}

.search-courses-input-wrapper {
  position: relative;
  min-width: 260px;
}

.search-courses-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 8px 14px 8px 36px;
  color: var(--text-primary);
  font-family: var(--font-arabic);
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}

.search-courses-input:focus {
  border-color: var(--on-surface-primary);
}

.search-courses-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Level Header Banner */
.level-header-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--panel-accent-wash);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 30px;
}

.level-header-tag {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--on-surface-primary);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.level-header-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-primary);
}

.level-header-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.level-header-actions {
  display: flex;
  gap: 10px;
}

/* Semester Section */
.semester-section {
  margin-bottom: 36px;
}

.semester-divider {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.semester-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.semester-indicator {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--color-primary-light);
  box-shadow: 0 0 10px var(--color-primary-light);
}

.semester-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.semester-sub {
  font-family: var(--font-latin);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.semester-count {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

/* Courses Card Grid */
.courses-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: 20px;
}

.course-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: transparent;
  transition: var(--transition);
}

.course-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
}

.course-card:hover::before {
  background: var(--color-primary-light);
}

.course-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.course-code-badge {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-primary);
  background: var(--overlay-2);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.course-cat-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.course-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
}

.course-card-en {
  font-family: var(--font-latin);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.3;
}

.course-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background: var(--scrim-1);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

.course-stat-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.course-stat-item i {
  color: var(--on-surface-primary);
}

.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.course-prereq-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.prereq-value.has-prereq {
  color: var(--on-surface-accent);
  font-weight: 700;
}

/* Empty Course State */
.empty-course-card {
  grid-column: 1 / -1;
  background: var(--bg-surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* Detailed Drawer Internal Styles */
.drawer-header {
  margin-bottom: 24px;
}

.drawer-badges {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.course-code-pill {
  font-family: var(--font-mono);
  background: var(--fill-primary);
  color: #ffffff;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
}

.level-pill, .sem-pill {
  background: var(--overlay-2);
  color: var(--text-secondary);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}

.drawer-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.drawer-sub {
  font-family: var(--font-latin);
  font-size: 0.95rem;
  color: var(--on-surface-primary);
}

.drawer-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.section-head-split {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-head-split .section-subtitle {
  margin-bottom: 0;
}

.hours-breakdown-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  text-align: center;
}

.breakdown-col {
  background: var(--scrim-1);
  padding: 10px;
  border-radius: var(--radius-sm);
}

.breakdown-col .num {
  display: block;
  font-family: var(--font-latin);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--on-surface-primary);
}

.breakdown-col .label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.course-description-full {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* Prerequisite Graph Box */
.prereq-chain-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--scrim-1);
  padding: 12px 16px;
  border-radius: var(--radius-md);
}

.prereq-node {
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

.prereq-node.active {
  border-color: var(--on-surface-primary);
  background: rgba(2, 132, 199, 0.1);
}

.node-badge {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.node-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.prereq-arrow {
  color: var(--on-surface-primary);
  font-size: 1.1rem;
}

/* Drive Links Panel */
.drive-links-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drive-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--scrim-1);
  padding: 10px 14px;
  border-radius: var(--radius-md);
}

.drive-item-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(2, 132, 199, 0.15);
  color: var(--on-surface-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drive-item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.drive-item-info .title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.drive-item-info .meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Assignments List */
.assignments-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.assignment-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--scrim-1);
  padding: 12px;
  border-radius: var(--radius-md);
}

.assignment-status {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.status-active {
  background: rgba(16, 185, 129, 0.2);
  color: var(--on-surface-success);
}

.status-upcoming {
  background: rgba(245, 158, 11, 0.2);
  color: var(--on-surface-accent);
}

.assignment-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.assignment-deadline {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   نظام التمرير الأفقي المحمول (Mobile Horizontal Touch Sliders)
   ========================================================================== */
@media (max-width: 768px) {
  .courses-card-grid {
    display: flex !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory !important;
    -webkit-overflow-scrolling: touch !important;
    scroll-behavior: smooth;
    gap: var(--space-4) !important;
    padding: var(--space-2) 16px var(--space-4) 16px !important;
    margin-inline: -16px !important;
    scrollbar-width: thin;
  }

  .courses-card-grid::-webkit-scrollbar {
    height: 4px;
  }

  .courses-card-grid::-webkit-scrollbar-thumb {
    background: var(--border-subtle);
    border-radius: var(--radius-full);
  }

  .courses-card-grid > * {
    flex: 0 0 85% !important;
    min-width: 270px !important;
    max-width: 320px !important;
    scroll-snap-align: start !important;
    scroll-snap-stop: normal !important;
  }

  .courses-card-grid > .empty-course-card,
  .courses-card-grid > .empty-state {
    flex: 0 0 100% !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  .curriculum-controls-bar {
    padding: 10px 12px;
    gap: 12px;
  }

  .curriculum-controls-bar .filter-group {
    flex-wrap: nowrap;
    overflow-x: auto;
    width: 100%;
    padding-bottom: 6px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }

  .curriculum-controls-bar .filter-group .filter-pill-btn {
    flex-shrink: 0;
  }
}