/**
 * GET ENGINEERING SEAT — Public Homepage Styles (v1.0)
 *
 * Adheres strictly to the Phase 05.1 design system:
 * - CSS variables (--color-*, --spacing-*, --radius-*, --shadow-*)
 * - Fluid responsive layout (<640px, 640-1023px, >=1024px)
 * - Light and dark mode support
 * - High-contrast accessible typography
 */

/* ==========================================================================
   1. Hero Section
   ========================================================================== */
.home-hero {
  position: relative;
  padding: var(--spacing-16) 0 var(--spacing-14);
  background: linear-gradient(180deg, var(--color-surface-raised, #f8fafc) 0%, var(--color-surface, #ffffff) 100%);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

[data-theme="dark"] .home-hero {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, var(--color-surface) 100%);
}

.home-hero-container {
  max-width: 900px;
  margin: 0 auto;
}

.home-hero-badge {
  display: inline-flex;
  margin-bottom: var(--spacing-4);
}

.home-hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: var(--font-weight-extrabold, 800);
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.03em;
}

.home-hero-title .text-gradient {
  background: linear-gradient(135deg, var(--color-secondary, #0d9488) 0%, var(--color-teal-bright, #2dd4bf) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-hero-subtitle {
  font-size: clamp(var(--font-size-base), 2.5vw, var(--font-size-xl));
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 720px;
  margin: 0 auto var(--spacing-8);
}

/* Hero Search Trigger Bar */
.home-hero-search-wrapper {
  max-width: 640px;
  margin: 0 auto var(--spacing-8);
}

.home-hero-search-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  text-align: left;
  width: 100%;
}

.home-hero-search-bar:hover,
.home-hero-search-bar:focus-visible {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
  outline: none;
}

.home-hero-search-icon {
  font-size: 20px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.home-hero-search-text {
  flex-grow: 1;
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}

.home-hero-search-shortcut {
  font-size: 11px;
  font-family: monospace;
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px 6px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.home-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

/* ==========================================================================
   2. Shared Section Layouts & Headers
   ========================================================================== */
.home-section {
  padding: var(--spacing-14) 0;
  border-bottom: 1px solid var(--color-border);
}

.home-section-alt {
  background-color: var(--color-surface-raised, #f8fafc);
}

[data-theme="dark"] .home-section-alt {
  background-color: rgba(15, 23, 42, 0.4);
}

.home-section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-10);
}

.home-section-badge {
  display: inline-flex;
  margin-bottom: var(--spacing-2);
}

.home-section-title {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-3xl));
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
  letter-spacing: -0.02em;
}

.home-section-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   3. Primary Discovery Cards (8 Items)
   ========================================================================== */
.discovery-cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

@media (max-width: 1023.98px) {
  .discovery-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 639.98px) {
  .discovery-cards-grid {
    grid-template-columns: 1fr;
  }
}

.discovery-card {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none !important;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}

.discovery-card:hover,
.discovery-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-secondary);
}

.discovery-card-icon {
  font-size: 32px;
  line-height: 1;
  margin-bottom: var(--spacing-4);
  display: inline-block;
}

.discovery-card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.discovery-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  flex-grow: 1;
  margin-bottom: var(--spacing-4);
}

.discovery-card-link {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
}

.discovery-card:hover .discovery-card-link {
  text-decoration: underline;
}

/* ==========================================================================
   4. Featured Discovery Sections (Colleges & Exams)
   ========================================================================== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

@media (max-width: 1023.98px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 639.98px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
}

.featured-card {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.featured-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
}

.featured-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.featured-card-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: 0;
  line-height: var(--line-height-snug);
}

.featured-card-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  flex-grow: 1;
  margin-bottom: var(--spacing-4);
}

.featured-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-3);
  margin-top: auto;
}

.featured-empty-state {
  text-align: center;
  padding: var(--spacing-8) var(--spacing-4);
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text-muted);
}

/* ==========================================================================
   5. How It Works
   ========================================================================== */
.how-it-works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

@media (max-width: 1023.98px) {
  .how-it-works-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 639.98px) {
  .how-it-works-grid {
    grid-template-columns: 1fr;
  }
}

.how-it-works-step {
  padding: var(--spacing-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--color-secondary);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.step-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.step-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   6. Student Workspace CTA Banner
   ========================================================================== */
.student-cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
  padding: var(--spacing-8);
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-raised) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 767.98px) {
  .student-cta-card {
    flex-direction: column;
    text-align: center;
    padding: var(--spacing-6);
  }
}

.student-cta-content {
  max-width: 600px;
}

.student-cta-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.student-cta-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

.student-cta-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  flex-shrink: 0;
}

@media (max-width: 767.98px) {
  .student-cta-actions {
    justify-content: center;
    width: 100%;
  }
}

/* ==========================================================================
   7. Trust / Data Disclaimer Box
   ========================================================================== */
.disclaimer-box {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-5) var(--spacing-6);
  background-color: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-warning, #f59e0b);
  border-radius: var(--radius-lg);
  margin: var(--spacing-10) auto 0;
  max-width: 900px;
}

.disclaimer-icon {
  font-size: 24px;
  line-height: 1;
  color: var(--color-warning, #f59e0b);
  flex-shrink: 0;
}

.disclaimer-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--spacing-1);
}

.disclaimer-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: 0;
}

/* ==========================================================================
   8. Final CTA Section
   ========================================================================== */
.home-final-cta {
  padding: var(--spacing-16) 0;
  text-align: center;
  background-color: var(--color-surface);
}

.home-final-cta-inner {
  max-width: 700px;
  margin: 0 auto;
}

.home-final-cta-title {
  font-size: clamp(var(--font-size-2xl), 3.5vw, var(--font-size-4xl));
  font-weight: var(--font-weight-extrabold, 800);
  color: var(--color-text);
  margin-bottom: var(--spacing-3);
  letter-spacing: -0.02em;
}

.home-final-cta-desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-8);
}

.home-final-cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}