/* ==========================================================================
   ISLA Courses Page Stylesheet
   Minimal Dark Hero, Accordion Course Cards, Tabs & Program Comparison
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Minimal Dark Hero with Large "3" Stat
   -------------------------------------------------------------------------- */
.courses-hero {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: calc(80px + var(--space-8)) var(--space-4) var(--space-12);
  position: relative;
  overflow: hidden;
}

.courses-hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 202, 23, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.courses-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 900px) {
  .courses-hero-inner {
    grid-template-columns: 1fr auto;
    gap: var(--space-8);
  }
}

.courses-hero-text {
  max-width: 720px;
}

.courses-hero-title {
  font-family: var(--font-serif);
  font-size: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  color: #FFFFFF;
  margin-bottom: var(--space-3);
}

.courses-hero-title .gold-text {
  color: var(--color-accent);
}

.courses-hero-sub {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-on-dark-secondary);
  line-height: 1.7;
}

.courses-hero-stat {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: rgba(30, 48, 106, 0.85);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-accent);
}

.hero-big-number {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 6vw, 5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.hero-stat-text {
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--color-text-on-dark);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   2. Expandable Accordion Course Cards
   -------------------------------------------------------------------------- */
.courses-list-section {
  background-color: var(--color-bg-light);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.course-card-item {
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border-light);
  margin-bottom: var(--space-6);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  transition: box-shadow var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo);
}

.course-card-item:hover,
.course-card-item.active {
  box-shadow: 0 16px 36px rgba(37, 58, 124, 0.08);
  border-color: rgba(37, 58, 124, 0.25);
}

.course-header {
  padding: var(--space-4);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-bg-card);
  transition: background var(--duration-fast) var(--ease-out-expo);
  user-select: none;
}

@media (min-width: 768px) {
  .course-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
  }
}

.course-header:hover {
  background: #FAFAF8;
}

.course-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.course-badge-number {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-bg-dark);
  opacity: 0.8;
  min-width: 44px;
}

.course-header-meta h3 {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.course-header-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.course-tag {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(37, 58, 124, 0.06);
  color: var(--color-bg-dark);
}

.course-toggle-action {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.course-toggle-arrow {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-dark);
  transition: transform var(--duration-fast) var(--ease-out-expo), background var(--duration-fast) var(--ease-out-expo);
}

.course-card-item.active .course-toggle-arrow {
  transform: rotate(180deg);
  background: var(--color-bg-dark);
  color: var(--color-accent);
}

/* Accordion Body & Tabbed System */
.course-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  border-top: 1px solid transparent;
}

.course-card-item.active .course-accordion-body {
  border-top-color: var(--color-border-light);
}

.course-inner-content {
  padding: var(--space-4);
  background: #FCFCFA;
}

@media (min-width: 768px) {
  .course-inner-content {
    padding: var(--space-6);
  }
}

/* Tab Navigation */
.course-tabs-nav {
  display: flex;
  gap: var(--space-2);
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  scrollbar-width: none;
}

.course-tabs-nav::-webkit-scrollbar {
  display: none;
}

.course-tab-btn {
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  position: relative;
  transition: color var(--duration-fast) var(--ease-out-expo);
  white-space: nowrap;
}

.course-tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-bg-dark);
  transform: scaleX(0);
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.course-tab-btn.active {
  color: var(--color-bg-dark);
}

.course-tab-btn.active::after {
  transform: scaleX(1);
}

/* Tab Content Panels */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeInTab 0.4s ease-out forwards;
}

@keyframes fadeInTab {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.curriculum-module-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .curriculum-module-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.module-box {
  background: var(--color-bg-card);
  padding: var(--space-4);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border-light);
  border-left: 3px solid var(--color-bg-dark);
}

.module-box h4 {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.module-box p {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.career-pathways-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.pathway-pill {
  padding: var(--space-3);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.pathway-pill i {
  color: var(--color-accent);
}

.course-apply-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   3. Side-by-Side Comparison Table
   -------------------------------------------------------------------------- */
.comparison-section {
  background-color: var(--color-bg-light-alt);
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

.table-responsive-box {
  overflow-x: auto;
  border-radius: var(--border-radius);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
}

.comparison-table th {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.comparison-table th.highlight-col {
  background-color: var(--color-bg-dark-surface);
  border-left: 2px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);
}

.comparison-table td {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-text-secondary);
}

.comparison-table td.feature-title {
  font-weight: 700;
  color: var(--color-text-primary);
  background-color: #FAF9F6;
  width: 25%;
}

.comparison-table td.highlight-col {
  background-color: rgba(255, 202, 23, 0.04);
  border-left: 2px solid rgba(255, 202, 23, 0.2);
  border-right: 2px solid rgba(255, 202, 23, 0.2);
  font-weight: 600;
  color: var(--color-text-primary);
}