/* Import Variables */
@import './variables.css';

/* ============================================
   RESET & BASE
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY CLASSES
   ============================================ */
.page-title {
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--color-text-primary);
}

.section-heading {
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1.3;
  color: var(--color-text-primary);
}

.card-title {
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--color-text-primary);
}

.meta-text {
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ============================================
   HEADER
   ============================================ */
.app-header {
  height: 56px;
  padding: 0 var(--space-6);
  background: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
}

.app-header .logo-section {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.app-header .logo {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  object-fit: contain;
  background-color: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.app-header .site-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  margin: 0;
  letter-spacing: -0.01em;
}

.app-header .site-subtitle {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.site-title-mobile {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-install {
  height: 36px;
  padding: 0 var(--space-4);
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-sm);
  background: transparent;
  color: white;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-install:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-install:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 2px;
}

.btn-refresh {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background var(--transition-fast);
}

.btn-refresh:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-refresh:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 2px;
}

/* ============================================
   ANNOUNCEMENT BANNER
   ============================================ */
.announcement-banner {
  background-color: var(--color-info);
  color: white;
  padding: var(--space-3) var(--space-4);
  text-align: center;
  position: relative;
  font-size: 0.875rem;
  animation: slideDown var(--transition-base);
}

.announcement-banner.warning {
  background-color: var(--color-warning);
  color: var(--color-text-primary);
}

.announcement-banner.success {
  background-color: var(--color-success);
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.announcement-close {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--space-2);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
}

.announcement-close:hover {
  opacity: 1;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main {
  padding: var(--space-6) 0;
  min-height: calc(100vh - 300px);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.breadcrumb-item {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
  color: var(--color-brand);
}

.breadcrumb-item.active {
  color: var(--color-text-primary);
  font-weight: 500;
}

.breadcrumb-separator {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

/* ============================================
   SEARCH SECTION
   ============================================ */
.search-section {
  background: var(--color-brand-subtle);
  padding: var(--space-12) var(--space-4);
  border-radius: var(--radius-xl);
  text-align: center;
  margin: var(--space-8) 0;
}

.search-section .page-title {
  margin-bottom: var(--space-6);
}

.search-wrapper {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
}

.search-wrapper .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 52px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border-strong);
  padding: 0 16px 0 44px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  box-sizing: border-box;
}

.search-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.7;
}

.search-input:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(46, 158, 88, 0.2);
  outline: none;
}

.search-input:focus-visible {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(46, 158, 88, 0.4);
}

/* ============================================
   DEPARTMENTS GRID
   ============================================ */
.departments-section-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.departments-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

/* ============================================
   DEPARTMENT CARD
   ============================================ */
.department-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 20px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
  text-decoration: none;
  color: inherit;
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.department-card:nth-child(1) { animation-delay: 0.03s; }
.department-card:nth-child(2) { animation-delay: 0.06s; }
.department-card:nth-child(3) { animation-delay: 0.09s; }
.department-card:nth-child(4) { animation-delay: 0.12s; }
.department-card:nth-child(5) { animation-delay: 0.15s; }
.department-card:nth-child(6) { animation-delay: 0.18s; }
.department-card:nth-child(7) { animation-delay: 0.21s; }
.department-card:nth-child(8) { animation-delay: 0.24s; }
.department-card:nth-child(n+9) { animation-delay: 0.27s; }

.department-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 0, 0, 0.08);
}

.department-card:active {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.department-card:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Card Icon — UNIFORM color for every department */
.card-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #F3F4F6;
}

.card-icon i {
  color: #2E9E58;
  font-size: 1.2rem;
}

/* Lucide icon SVGs inside card-icon (Lucide replaces <i data-lucide> with <svg>) */
.card-icon svg {
  width: 22px;
  height: 22px;
  stroke: #2E9E58;
  stroke-width: 1.75;
  fill: none;
}

/* ============================================
   LEVEL GRID
   ============================================ */
.level-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.level-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform var(--transition-base), 
              box-shadow var(--transition-base);
  text-decoration: none;
}

.level-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.level-card:active {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.level-card:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

.level-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-brand);
  line-height: 1;
}

.level-label {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* ============================================
   SEMESTER GRID
   ============================================ */
.semester-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.semester-card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
  text-decoration: none;
  text-align: center;
}

.semester-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-brand);
}

.semester-card:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

.semester-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ============================================
   FILE LIST
   ============================================ */
.file-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.file-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 20px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.file-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 8px;
  background: #FEE2E2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-icon i {
  color: #DC2626;
  font-size: 1.2rem;
}

.file-info {
  flex: 1;
}

.file-name {
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.file-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.file-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.btn-primary {
  height: 40px;
  padding: 0 20px;
  background: var(--color-brand);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-primary:hover {
  background: #268a4d;
}

.btn-secondary {
  height: 40px;
  padding: 0 20px;
  background: transparent;
  color: var(--color-brand);
  border: 1.5px solid var(--color-brand);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-secondary:hover {
  background: var(--color-brand-light);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  text-align: center;
  padding: var(--space-16) var(--space-4);
  gap: var(--space-3);
}

.empty-state-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--color-surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}

.empty-state-icon-wrap i {
  font-size: 1.8rem;
  color: var(--color-text-secondary);
}

.empty-state-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin: 0;
}

.empty-state .meta-text {
  margin: 0;
  margin-bottom: var(--space-4);
}

/* ============================================
   LOADING STATE
   ============================================ */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-4);
  gap: var(--space-6);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border-strong);
  border-top-color: var(--color-brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: var(--color-surface-raised);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: var(--space-16);
  border-top: 1px solid var(--color-border-strong);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.footer-section {
  margin-bottom: var(--space-4);
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.footer-text {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-2);
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-brand);
}

#install-link-footer {
  display: none;
}

/* "Get in touch" link must use brand green */
.footer-cta-link {
  color: var(--color-brand);
  text-decoration: underline;
}

.footer-cta-link:hover {
  color: #237a45;
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-strong);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.75rem;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal);
  padding: var(--space-4);
  overflow-y: auto;
}

.modal.open {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 900px;
  width: 95%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  white-space: normal;
  word-wrap: break-word;
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: transparent;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: var(--space-2);
  transition: color var(--transition-fast);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--color-text-primary);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-form-container {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  overflow-x: auto;
  min-width: 100%;
}

.contact-form-container iframe {
  width: 100% !important;
  min-width: 100% !important;
  max-width: none !important;
  min-height: 600px;
  border: none;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
}

.contact-form-container iframe[src*="docs.google.com"] {
  width: 100% !important;
  min-width: 100% !important;
  max-width: none !important;
}

.contact-info {
  font-size: 1rem;
  color: var(--color-text-primary);
  line-height: 1.6;
  font-weight: 500;
  text-align: center;
}

.contact-info strong {
  font-size: 1.1rem;
  color: var(--color-brand);
  display: block;
  margin-bottom: var(--space-3);
}

.contact-info a {
  color: var(--color-brand);
  text-decoration: none;
  font-weight: 600;
}

.contact-info a:hover {
  text-decoration: underline;
}

/* ============================================
   FONT AWESOME
   ============================================ */
.fas, .far, .fab {
  font-weight: 900;
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.fa, .fas, .far, .fab {
  font-family: "Font Awesome 6 Free", "Font Awesome 6 Pro", "FontAwesome", sans-serif !important;
}

/* File Icons */
.file-icon i {
  font-size: 1.1rem;
  color: #dc3545;
}

/* ============================================
   STATUS BADGE
   ============================================ */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.status-badge.online {
  background-color: var(--color-brand-light);
  color: var(--color-brand);
}

.status-badge.offline {
  background-color: #FBE9E7;
  color: #BF360C;
}

.status-badge.cached {
  background-color: #E3F2FD;
  color: #1967D2;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mt-3 { margin-top: var(--space-6); }
.hidden { display: none; }

/* ============================================
   PWA NOTIFICATIONS
   ============================================ */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  z-index: var(--z-toast);
  max-width: 350px;
  animation: slideInRight 0.3s ease-out;
  border: 1px solid var(--color-border-strong);
}

.notification-content {
  padding: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.notification-message {
  flex: 1;
  font-size: 0.875rem;
  color: var(--color-text-primary);
}

.notification-success { border-left: 4px solid var(--color-success); }
.notification-info { border-left: 4px solid var(--color-info); }
.notification-warning { border-left: 4px solid var(--color-warning); }
.notification-error { border-left: 4px solid var(--color-error); }

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================
   SKELETON LOADING
   ============================================ */
.skeleton-container {
  width: 100%;
  padding: var(--space-6);
}

.skeleton-message {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  font-size: 0.875rem;
}

.skeleton {
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
  border-radius: var(--radius-lg);
}

@keyframes skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  height: 80px;
  width: 100%;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
}

/* Skeleton department — matches card dimensions */
.skeleton-department {
  border-radius: var(--radius-lg);
  height: 80px;
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
}

/* Skeleton for levels/semesters */
.skeleton-card-inner {
  border-radius: var(--radius-lg);
  height: 120px;
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
}

/* Skeleton file item */
.skeleton-file {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  height: 72px;
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.4s ease infinite;
  margin-bottom: var(--space-2);
}

/* Dark mode skeleton */
[data-theme="dark"] .skeleton,
[data-theme="dark"] .skeleton-card,
[data-theme="dark"] .skeleton-department,
[data-theme="dark"] .skeleton-card-inner,
[data-theme="dark"] .skeleton-file {
  background: linear-gradient(
    90deg,
    var(--color-surface-raised) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    var(--color-surface-raised) 75%
  );
  background-size: 200% 100%;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-6) 0;
}

.about-back {
  margin-bottom: var(--space-6);
}

.about-back__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-brand);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.about-back__link:hover {
  background-color: var(--color-brand-light);
}

.about-back__link i {
  font-size: 0.875rem;
}

.about-section {
  margin-bottom: var(--space-12);
}

.about-section__title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  letter-spacing: -0.01em;
}

.about-section__title i {
  color: var(--color-brand);
}

.about-section__subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

/* Session Picker — horizontal pill tabs */
.session-picker {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-1);
}

.session-picker::-webkit-scrollbar {
  display: none;
}

.session-picker__tab {
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--color-border-strong);
  border-radius: 100px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.session-picker__tab:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  background: var(--color-brand-light);
}

.session-picker__tab--active {
  background: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
}

.session-picker__tab--active:hover {
  background: #268a4d;
  border-color: #268a4d;
  color: white;
}

.session-picker__tab:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

/* Team Content Sub-sections */
.team-content__section {
  margin-bottom: var(--space-8);
}

.team-content__heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 0.8rem;
}

.team-content__heading i {
  color: var(--color-brand);
  font-size: 0.875rem;
}

/* Mission */
.about-mission {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.about-mission__item--full {
  grid-column: 1 / -1;
}

.about-mission__item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.about-mission__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.about-mission__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.about-mission__icon i {
  font-size: 1.4rem;
  color: white;
}

.about-mission__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.about-mission__text {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* Team Grids */
.about-team-grid {
  display: grid;
  gap: var(--space-4);
}

.about-team-grid--executives {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.about-team-grid--executives-top {
  grid-template-columns: repeat(2, minmax(220px, 280px));
  justify-content: center;
}

.about-team-grid--executives-bottom {
  grid-template-columns: repeat(var(--exec-bottom-columns, 3), minmax(180px, 1fr));
}

.about-team-grid--reps {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* Team Card — matches department card aesthetic */
.team-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base),
              border-color var(--transition-base);
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 0, 0, 0.08);
}

.team-card:active {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.team-card--placeholder {
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.team-card--placeholder:hover {
  transform: translateY(-2px);
}

/* Executive cards — slightly more prominent */
.team-card--executive {
  padding: var(--space-5) var(--space-4);
}

.team-card--executive .team-card__avatar {
  width: 86px;
  height: 86px;
  font-size: 1.5rem;
}

.team-card--executive .team-card__name {
  font-size: 1.05rem;
}

/* Rep cards */
.team-card--rep {
  padding: var(--space-5) var(--space-4);
}

.team-card--rep .team-card__avatar {
  width: 86px;
  height: 86px;
  font-size: 1.5rem;
}

.team-card--rep .team-card__name {
  font-size: 1.05rem;
}

.team-card__avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: 1.5rem;
  overflow: hidden;
  position: relative;
}

.team-card__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  position: absolute;
  inset: 0;
}

.team-card__initials {
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.team-card__initials--hidden {
  display: none;
}

.team-card__info {
  margin-top: var(--space-1);
}

.team-card__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.team-card__role {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* CTA Section */
.about-cta {
  background: var(--color-brand);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  text-align: center;
  color: white;
}

.about-cta__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.about-cta__icon i {
  font-size: 1.75rem;
  color: white;
}

.about-cta__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.about-cta__text {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto var(--space-6);
  opacity: 0.95;
}

.about-cta__contact {
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.about-cta__contact i {
  font-size: 1rem;
}

/* About Dark Mode */
[data-theme="dark"] .about-mission__item,
[data-theme="dark"] .team-card {
  background: var(--color-surface-raised);
}

[data-theme="dark"] .about-cta {
  background: linear-gradient(135deg, var(--color-brand), #1a5a3a);
}

[data-theme="dark"] .session-picker__tab {
  background: var(--color-surface-raised);
  border-color: var(--color-border-strong);
  color: var(--color-text-secondary);
}

[data-theme="dark"] .session-picker__tab:hover {
  border-color: var(--color-brand);
  background: rgba(46, 158, 88, 0.15);
}

[data-theme="dark"] .session-picker__tab--active {
  background: var(--color-brand);
  color: white;
  border-color: var(--color-brand);
}

/* Coverage Tracker */
.coverage-accordion-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.coverage-accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
}

.coverage-accordion__header {
  width: 100%;
  text-align: left;
  padding: var(--space-4) var(--space-6);
  background: var(--color-surface);
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.coverage-accordion__header:hover {
  background: var(--color-background);
}

.coverage-accordion__header span {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.coverage-accordion__header i[data-lucide] {
  width: 20px;
  height: 20px;
  color: var(--color-brand);
}

.coverage-accordion__icon {
  color: var(--color-text-secondary);
  transition: transform var(--transition-base);
}

.coverage-accordion__body {
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
  padding: var(--space-6);
}

.coverage-table-container {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.coverage-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.coverage-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.coverage-summary-grid--single {
  grid-template-columns: 1fr;
}

.coverage-summary-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  padding: var(--space-3);
}

.coverage-summary-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.coverage-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.coverage-table th, .coverage-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.coverage-table th {
  background: var(--color-background);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.coverage-table tr:last-child td {
  border-bottom: none;
}

.status-yes {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #2e9e58;
  font-weight: 500;
  background: rgba(46, 158, 88, 0.1);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
}

.status-no {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #d32f2f;
  font-weight: 500;
  background: rgba(211, 47, 47, 0.1);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
}

.status-empty {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #8a6d1d;
  font-weight: 500;
  background: rgba(249, 171, 0, 0.18);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
}

.status-missing {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #6b7280;
  font-weight: 500;
  background: rgba(107, 114, 128, 0.18);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
}

.coverage-empty {
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center;
}

@media (max-width: 768px) {
  .coverage-summary-grid {
    grid-template-columns: 1fr;
  }
}

[data-theme="dark"] .coverage-accordion,
[data-theme="dark"] .coverage-table-container {
  background: var(--color-surface-raised);
}

[data-theme="dark"] .coverage-accordion__header,
[data-theme="dark"] .coverage-accordion__body,
[data-theme="dark"] .coverage-table th {
  background: var(--color-surface-raised);
}

/* ============================================
   RESPONSIVE: TABLET (≥768px)
   ============================================ */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }

  .departments-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .level-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   RESPONSIVE: DESKTOP (≥1024px)
   ============================================ */
@media (min-width: 1024px) {
  .departments-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .level-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   RESPONSIVE: MOBILE (<768px)
   ============================================ */
@media (max-width: 767px) {
  /* Grid: 2 columns on mobile */
  .departments-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .department-card {
    padding: var(--space-4);
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }

  .card-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
  }

  .card-icon i {
    font-size: 1rem;
  }

  /* Search */
  .search-section {
    padding: var(--space-8) var(--space-4);
    border-radius: var(--radius-md);
  }

  .page-title {
    font-size: 1.4rem;
  }

  .search-input {
    height: 48px;
  }

  /* Header */
  .app-header {
    padding: 0 var(--space-4);
  }

  .app-header .logo {
    width: 32px;
    height: 32px;
  }

  .app-header .site-title {
    display: none;
  }

  .app-header .site-subtitle {
    display: none;
  }

  .site-title-mobile {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    margin: 0;
  }

  .btn-install .btn-text {
    display: none;
  }

  /* Level/semester */
  .level-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .semester-grid {
    gap: var(--space-3);
  }

  /* Breadcrumb */
  .breadcrumb {
    font-size: 0.875rem;
    margin-bottom: var(--space-4);
  }

  /* Modal */
  .modal-content {
    width: 98%;
    max-width: 98%;
    padding: var(--space-4);
    margin: var(--space-2);
  }

  .contact-form-container iframe {
    height: 600px;
    min-height: 500px;
  }

  .contact-form-container iframe[src*="docs.google.com"] {
    width: 100% !important;
    min-width: 100% !important;
    max-width: none !important;
  }

  .modal {
    padding: var(--space-2);
  }

  /* Notifications */
  .notification {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
  }
}

/* ============================================
   RESPONSIVE: EXTRA SMALL (<480px)
   ============================================ */
@media (max-width: 479px) {
  .app-header .logo {
    width: 28px;
    height: 28px;
  }

  .modal-content {
    width: 100%;
    max-width: 100%;
    padding: var(--space-3);
    margin: 0;
    border-radius: 0;
    max-height: 100vh;
    height: 100vh;
  }

  .contact-form-container iframe {
    height: 500px;
    min-height: 400px;
  }

  .contact-form-container iframe[src*="docs.google.com"] {
    min-width: 100% !important;
    width: 100% !important;
    overflow-x: hidden !important;
  }

  .modal {
    padding: 0;
    align-items: stretch;
  }

  .modal.open {
    align-items: stretch;
  }

  .breadcrumb {
    font-size: 0.75rem;
  }

  /* About page */
  .about-mission {
    grid-template-columns: 1fr;
  }

  .about-team-grid--executives,
  .about-team-grid--reps {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-team-grid--reps {
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  }

}

/* About Page Responsive */
@media (max-width: 768px) {
  .about-page {
    padding: var(--space-4) 0;
  }

  .about-section {
    margin-bottom: var(--space-8);
  }

  .about-section__title {
    font-size: 1.1rem;
  }

  .about-mission__item {
    padding: var(--space-6);
  }

  .about-team-grid--executives {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .about-team-grid--executives-top,
  .about-team-grid--executives-bottom {
    grid-template-columns: repeat(2, minmax(150px, 1fr));
  }

  .about-team-grid--reps {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .about-cta {
    padding: var(--space-8);
  }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  .header-actions,
  .search-section,
  .footer,
  .btn-install,
  .btn-refresh {
    display: none;
  }
}

/* ============================================
   EMAIL ACCESS GATE
   ============================================ */
.email-gate-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-surface);
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.email-gate-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

.email-gate-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card-hover);
  padding: var(--space-8);
  width: 100%;
  max-width: 440px;
  text-align: center;
  animation: gateFadeInUp 0.5s ease;
}

@keyframes gateFadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.email-gate-logo {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  object-fit: contain;
}

.email-gate-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.email-gate-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.email-gate-form {
  text-align: left;
}

.email-gate-field {
  margin-bottom: var(--space-4);
}

.email-gate-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.05em;
}

.email-gate-input-wrapper {
  position: relative;
}

.email-gate-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.email-gate-input:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(46, 158, 88, 0.15);
}

.email-gate-error {
  display: none;
  color: var(--color-error);
  font-size: 0.8rem;
  margin-top: var(--space-2);
  font-weight: 500;
  align-items: center;
  gap: var(--space-1);
}

.email-gate-error i {
  font-size: 0.875rem;
}

.email-gate-btn {
  width: 100%;
  background-color: var(--color-brand);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  margin-top: var(--space-4);
}

.email-gate-btn:hover {
  background-color: #268a4d;
}

.email-gate-btn:active {
  transform: scale(0.98);
}

.email-gate-card.shake {
  animation: gateShake 0.3s ease;
}

@keyframes gateShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.email-gate-footer {
  margin-top: var(--space-6);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.email-gate-footer a {
  color: var(--color-brand);
  text-decoration: none;
  font-weight: 600;
}

.email-gate-footer a:hover {
  text-decoration: underline;
}