/**
 * Lecture Mind - Layout System
 *
 * Page-level layout styles, responsive grid, header/footer
 */

/* ============================================
   UTILITIES
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden {
  display: none !important;
}

.min-h-screen {
  min-height: 100vh;
}

/* Dark mode visibility toggles */
.dark-show {
  display: none;
}

.dark .dark-show {
  display: block;
}

.dark .dark-hide {
  display: none;
}

/* Icon utilities */
.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.icon-inline {
  display: inline-block;
  vertical-align: -0.125em;
  margin-right: var(--space-2);
}

/* Button utilities */
.btn-full {
  width: 100%;
}

/* ============================================
   APP CONTAINER
   ============================================ */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: var(--surface-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--duration-slow) var(--ease-out),
              border-color var(--duration-slow) var(--ease-out);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-out);
}

.brand-logo:hover {
  transform: scale(1.05);
}

.dark .brand-logo {
  box-shadow: var(--shadow-glow-sm);
}

.brand-logo-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-white);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  background: linear-gradient(135deg, var(--foreground), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-tagline {
  font-size: var(--text-xs);
  color: var(--foreground-muted);
  margin-top: var(--space-0_5);
}

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

/* ============================================
   MAIN CONTENT
   ============================================ */
.main {
  flex: 1;
  padding: var(--space-8) var(--space-6);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

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

@media (min-width: 1024px) {
  .main-grid {
    grid-template-columns: 3fr 2fr;
  }
}

/* ============================================
   PANELS
   ============================================ */
.panel-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.panel-right {
  display: flex;
  flex-direction: column;
}

.sidebar-card {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.dark .sidebar-card {
  box-shadow: var(--shadow-glow-sm);
}

/* ============================================
   PROGRESS SECTION
   ============================================ */
.progress-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.progress-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-xl);
}

.progress-icon .spinner {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-white);
}

.progress-info {
  flex: 1;
}

.progress-stage {
  font-weight: var(--font-semibold);
  margin: 0;
}

.progress-message {
  font-size: var(--text-sm);
  margin: 0;
}

.progress-percent {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--primary);
  font-family: var(--font-mono);
}

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

.info-item {
  padding: var(--space-3);
  background: var(--background-subtle);
  border-radius: var(--radius-lg);
}

.info-label {
  font-size: var(--text-xs);
  color: var(--foreground-muted);
  margin: 0 0 var(--space-1) 0;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.info-value {
  font-weight: var(--font-medium);
  margin: 0;
  word-break: break-word;
}

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

/* ============================================
   TABS CUSTOMIZATION
   ============================================ */
.tabs-list {
  display: flex;
  padding: var(--space-2);
  gap: var(--space-1);
  background: var(--background-subtle);
}

.tabs-trigger {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2_5) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--foreground-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.tabs-trigger:hover {
  color: var(--foreground);
  background: var(--surface);
}

.tabs-trigger[data-state="active"] {
  color: var(--primary);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.tabs-panels {
  padding: var(--space-6);
}

.tabs-content[data-state="inactive"] {
  display: none;
}

/* ============================================
   SEARCH RESULTS
   ============================================ */
.search-results {
  position: relative;
  z-index: 1;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-height: 400px;
  overflow-y: auto;
}

/* Ensure input stays above empty state */
.input-group {
  position: relative;
  z-index: 10;
}

/* ============================================
   TRANSCRIPT LIST
   ============================================ */
.transcript-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-height: 500px;
  overflow-y: auto;
}

/* ============================================
   EXPORT SECTION
   ============================================ */
.export-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.export-label {
  font-size: var(--text-sm);
  margin: 0;
}

.export-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.export-option-content {
  flex: 1;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--foreground-muted);
  margin: 0;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Tablet (768px) */
@media (min-width: 768px) {
  .info-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Mobile adjustments */
@media (max-width: 767px) {
  .header-content {
    padding: 0 var(--space-4);
  }

  .main {
    padding: var(--space-6) var(--space-4);
  }

  .brand-tagline {
    display: none;
  }

  .tabs-trigger {
    padding: var(--space-2);
    font-size: var(--text-xs);
  }

  .tabs-trigger .icon {
    width: 1rem;
    height: 1rem;
  }

  .tabs-trigger span:not(.icon) {
    display: none;
  }

  .upload-zone {
    padding: var(--space-8);
  }

  .upload-zone-icon {
    width: var(--space-12);
    height: var(--space-12);
    padding: var(--space-3);
  }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--foreground-muted);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .header,
  .footer,
  .panel-right {
    display: none;
  }

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

  .card {
    break-inside: avoid;
  }
}