/* NTU Info - Main Page Styles
 * Styles specific to the homepage
 */

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--ntu-blue) 0%, var(--ntu-blue-light) 100%);
  color: var(--white);
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)" /></svg>') center/cover;
}

.hero-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 1;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--white);
}

.gradient-text {
  background: linear-gradient(45deg, #fbbf24, #f59e0b, var(--ntu-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fbbf24;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: var(--spacing-xs);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
}

/* Main Content */
.main-content {
  min-height: 50vh;
  padding-right: 0; /* Sidebar removed; keep layout stable */
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section.alternate-bg {
  background-color: var(--gray-50);
}

.section-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(135deg, var(--ntu-blue) 0%, var(--ntu-blue-light) 100%);
  color: white;
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
}

.section-description {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* Essential Student Tools Section */
.featured-tools {
  padding: var(--spacing-3xl) 0;
  background: var(--gray-50);
}

.featured-tools h2 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.tool-grid.tool-grid-secondary {
  margin-top: var(--spacing-xl);
}

.tool-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 2px solid transparent;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--ntu-blue-light);
}

.tool-card h3 {
  margin-bottom: var(--spacing-sm);
}

.tool-card p {
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
}

.tool-card .btn-primary {
  width: 100%;
}

.tool-card.featured-card {
  background: linear-gradient(135deg, var(--ntu-blue-lighter) 0%, var(--white) 100%);
  border: 2px solid var(--ntu-blue);
}

.tool-card .badge {
  display: inline-block;
  background: var(--ntu-blue);
  color: var(--white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.feature-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.feature-list li {
  padding: var(--spacing-xs) 0;
  color: var(--gray-600);
}

.btn-accent {
  display: inline-block;
  background: linear-gradient(135deg, var(--ntu-red) 0%, var(--ntu-red-light) 100%);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--white);
  text-decoration: none;
}

/* Toolkit Section - Two equal width cards */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-xl);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.tools-grid .tool-card {
  max-width: none;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.tools-grid .tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gray-300);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.tools-grid .tool-card.featured {
  position: relative;
}

.tools-grid .tool-card.featured::before {
  background: linear-gradient(90deg, var(--ntu-blue), var(--ntu-red));
}

.tool-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.tool-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.tool-icon.bg-ntu-blue {
  background: var(--ntu-blue);
}

.tool-icon.bg-ntu-red {
  background: var(--ntu-red);
}

.tool-meta {
  flex: 1;
}

.tool-category {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tool-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: var(--spacing-xs) 0 0 0;
}

.tool-description {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.tool-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--gray-600);
}

.feature-icon {
  width: 1rem;
  height: 1rem;
  color: var(--ntu-blue);
}

.tool-stats {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.tool-stats .stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.tool-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  flex: 1;
  margin-top: auto;
}

.tool-button.primary {
  background: linear-gradient(135deg, var(--ntu-blue) 0%, var(--ntu-blue-light) 100%);
  color: white;
}

.tool-button.primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.tool-button.secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  border-color: var(--gray-300);
}

.tool-button.secondary:hover {
  background: var(--gray-200);
  border-color: var(--ntu-blue);
  color: var(--ntu-blue);
  text-decoration: none;
}

.tool-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* Quick Access Grid */
.quick-access-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.quick-action-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
}

.quick-action-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--ntu-blue-light);
  text-decoration: none;
}

.quick-action-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--ntu-blue-lighter) 0%, var(--ntu-red-lighter) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--ntu-blue);
}

.quick-action-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.quick-action-desc {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin: 0;
}

/* Resource Card */
.resource-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xl);
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.resource-icon {
  width: 4rem;
  height: 4rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
}

.resource-body {
  flex: 1;
}

.resource-title {
  margin-bottom: var(--spacing-sm);
}

.resource-desc {
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
}

.resource-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--ntu-red);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.resource-btn:hover {
  background: var(--ntu-red-light);
  color: var(--white);
  text-decoration: none;
}

/* Responsive */
@media (max-width: 1280px) {
  .main-content {
    padding-right: 0;
  }
}

@media (max-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .stat-divider {
    display: none;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .tool-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .tool-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .resource-card {
    flex-direction: column;
  }

  .quick-access-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }
}

@media (max-width: 320px) {
  .hero-title {
    font-size: 1.75rem;
  }
}

.section-header.compact {
  margin-bottom: var(--spacing-lg);
}

.toolkit-links {
  display: grid;
  gap: var(--spacing-md);
  max-width: 760px;
  margin: 0 auto;
}

.toolkit-link {
  display: block;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
  color: var(--gray-800);
  font-weight: 600;
}

.toolkit-link:hover,
.toolkit-link:focus-visible {
  text-decoration: none;
  border-color: var(--ntu-blue-light);
  transform: translateY(-1px);
}

.featured-tools,
.section.alternate-bg {
  background: rgba(255, 255, 255, 0.5);
}

.tool-card {
  border: 1px solid var(--gray-200);
}