/* UNESCO Chairs Stylesheet - Premium & Luxurious Theme */

/* ==========================================================================
   Design Tokens & Themes
   ========================================================================== */

:root {
  /* Common Design Tokens */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --sidebar-width: 380px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
  --border-radius-sm: 6px;
  --color-gold: #ffb703;
  --color-cyan: #00f0ff;
  --color-red: #ff3366;
}

/* Light Theme Variables */
.theme-light {
  --bg-color: #f1f3f7;
  --bg-gradient: radial-gradient(circle at 75% 30%, #ffffff 0%, #e2e6f0 100%);
  --text-color: #0d1222;
  --text-muted: #5e667e;
  --card-bg: rgba(255, 255, 255, 0.65);
  --card-border: 1px solid rgba(255, 255, 255, 0.8);
  --card-border-inner: 1px solid rgba(0, 0, 0, 0.05);
  --border-color: rgba(0, 0, 0, 0.08);
  --accent-color: #0056b3;
  --accent-color-hover: #004085;
  --accent-glow: rgba(0, 86, 179, 0.25);
  --shadow-main: 0 10px 30px rgba(15, 23, 42, 0.06);
  --scrollbar-thumb: rgba(0, 0, 0, 0.15);
  --scrollbar-track: rgba(0, 0, 0, 0.03);
  --input-bg: rgba(0, 0, 0, 0.03);
  --input-focus-border: rgba(0, 86, 179, 0.4);
}

/* Dark Theme Variables */
.theme-dark {
  --bg-color: #070913;
  --bg-gradient: radial-gradient(circle at 75% 30%, #0d1127 0%, #04050b 100%);
  --text-color: #ffffff;
  --text-muted: #8892b0;
  --card-bg: rgba(14, 20, 43, 0.55);
  --card-border: 1px solid rgba(255, 255, 255, 0.04);
  --card-border-inner: 1px solid rgba(255, 255, 255, 0.06);
  --border-color: rgba(255, 255, 255, 0.08);
  --accent-color: #00e5ff;
  --accent-color-hover: #00b4cc;
  --accent-glow: rgba(0, 229, 255, 0.3);
  --shadow-main: 0 10px 40px rgba(0, 0, 0, 0.4);
  --scrollbar-thumb: rgba(255, 255, 255, 0.1);
  --scrollbar-track: rgba(0, 0, 0, 0.2);
  --input-bg: rgba(255, 255, 255, 0.03);
  --input-focus-border: rgba(0, 229, 255, 0.4);
}

/* ==========================================================================
   Basic Reset
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  color: var(--text-color);
  background-color: var(--bg-color);
  background-image: var(--bg-gradient);
  min-height: 100vh;
  overflow: hidden;
  transition: background var(--transition-smooth), color var(--transition-smooth);
}

/* Custom Scrollbar for sidebars and lists */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

/* ==========================================================================
   App Layout
   ========================================================================== */

.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  position: relative;
}

/* Glassmorphism utility class */
.glass {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: var(--card-border);
  box-shadow: var(--shadow-main);
  transition: var(--transition-smooth);
}

/* ==========================================================================
   Left Sidebar Styling
   ========================================================================== */

.sidebar {
  width: var(--sidebar-width);
  height: 100%;
  display: flex;
  flex-direction: column;
  z-index: 10;
  flex-shrink: 0;
  border-right: var(--card-border);
}

.sidebar-header {
  padding: 24px;
  border-bottom: var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.unesco-logo {
  width: 42px;
  height: 42px;
  color: var(--accent-color);
  filter: drop-shadow(0 0 6px var(--accent-glow));
  transition: var(--transition-smooth);
}

.logo-text h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1.2;
}

.logo-text p {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* Theme Switcher Widget */
.theme-switcher-wrapper {
  background: var(--input-bg);
  padding: 3px;
  border-radius: var(--border-radius-md);
  border: var(--card-border-inner);
}

.theme-switcher {
  display: flex;
  width: 100%;
}

.theme-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: calc(var(--border-radius-md) - 2px);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-btn svg {
  transition: transform 0.4s ease;
}

.theme-btn:hover {
  color: var(--text-color);
}

.theme-btn:hover svg {
  transform: rotate(15deg);
}

.theme-btn.active {
  background: var(--card-bg);
  color: var(--accent-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: var(--card-border);
}

/* Search Controls */
.search-section {
  padding: 20px 24px;
  border-bottom: var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0 12px;
  transition: var(--transition-smooth);
}

.search-box:focus-within {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-icon {
  color: var(--text-muted);
  margin-right: 10px;
}

#search-input {
  width: 100%;
  border: none;
  background: transparent;
  padding: 12px 0;
  font-family: var(--font-sans);
  color: var(--text-color);
  font-size: 13px;
  font-weight: 400;
  outline: none;
}

#clear-search {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
}

.search-filters {
  display: flex;
  gap: 8px;
}

.filter-chip {
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-chip:hover {
  border-color: var(--text-color);
  color: var(--text-color);
}

.filter-chip.active {
  background: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
  box-shadow: 0 3px 8px var(--accent-glow);
}

/* Results List */
.results-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.results-count {
  font-size: 11px;
  color: var(--text-muted);
  padding: 12px 24px;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: var(--border-color);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.results-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 24px;
}

.chair-card {
  padding: 14px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: var(--card-border-inner);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
  animation: cardFadeIn 0.3s ease-out;
  animation-fill-mode: both;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chair-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

.chair-card.active {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-color);
  border-left: 4px solid var(--accent-color);
}

.chair-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 6px;
}

.chair-card-title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
}

.badge {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-detailed {
  background: rgba(255, 183, 3, 0.15);
  color: var(--color-gold);
  border: 1px solid rgba(255, 183, 3, 0.3);
}

.badge-country {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.chair-card-detail {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.chair-card-detail span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   Center Globe Visualizer Area
   ========================================================================== */

.visualizer-container {
  flex: 1;
  height: 100%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.globe-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

#globe-3d, #globe-2d-overlay {
  display: block;
  position: absolute;
}

#globe-2d-overlay {
  pointer-events: none;
}

/* Instruction Text Overlay */
.globe-instruction {
  position: absolute;
  bottom: 24px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  padding: 8px 16px;
  border-radius: 20px;
  border: var(--card-border-inner);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.spin {
  animation: spin 3s linear infinite;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

/* Stats Card Overlay */
.stats-card {
  position: absolute;
  top: 24px;
  display: flex;
  gap: 24px;
  padding: 16px 24px;
  border-radius: var(--border-radius-lg);
  border: var(--card-border);
  box-shadow: var(--shadow-main);
}

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

.stat-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 2px;
}

.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Right Details Panel Styling
   ========================================================================== */

.details-panel {
  position: relative;
  width: 0;
  height: 100%;
  z-index: 15;
  display: flex;
  flex-direction: column;
  padding: 0;
  border-left: none;
  box-shadow: var(--shadow-main);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.5s cubic-bezier(0.4, 0, 0.2, 1), border-left 0.5s ease;
  overflow-y: auto;
  overflow-x: hidden;
}

.details-panel.open {
  width: 420px;
  padding: 32px;
  border-left: var(--card-border);
}

.close-details {
  position: absolute;
  top: 24px;
  right: 24px;
  background: transparent;
  border: none;
  font-size: 28px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.close-details:hover {
  color: var(--text-color);
  transform: scale(1.1);
}

.details-content {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.details-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 80%;
  color: var(--text-muted);
  text-align: center;
  gap: 16px;
  font-size: 13px;
  line-height: 1.5;
}

/* Detail Elements Layout */
.detail-header {
  margin-bottom: 8px;
}

.detail-badge-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.detail-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-color);
}

.detail-divider {
  height: 1px;
  background: var(--border-color);
}

.detail-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detail-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.detail-value {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-color);
}

/* Rich Details Styling for Chairs */
.detail-card-holder {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: var(--card-border-inner);
  border-radius: var(--border-radius-md);
  padding: 12px;
}

.holder-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-color);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 0 10px var(--accent-glow);
}

.holder-info {
  display: flex;
  flex-direction: column;
}

.holder-name {
  font-weight: 600;
  font-size: 13px;
}

/* Buttons and Links */
.btn-website {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent-color);
  color: #ffffff !important;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 12px;
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: var(--transition-smooth);
  margin-top: 10px;
}

.btn-website:hover {
  background: var(--accent-color-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--accent-glow);
}

.btn-website svg {
  fill: currentColor;
}

/* ==========================================================================
   Loading Animation Screen
   ========================================================================== */

.loading-spinner {
  display: block;
  width: 40px;
  height: 40px;
  margin: 100px auto;
  border: 3px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s ease-in-out infinite;
}

.no-results {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 40px;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
    height: 45%;
    border-right: none;
    border-bottom: var(--card-border);
  }
  
  .visualizer-container {
    height: 55%;
  }
  
  .details-panel {
    position: absolute;
    width: 100%;
    height: 55%;
    bottom: 0;
    top: auto;
    border-left: none;
    border-top: var(--card-border);
    transform: translateY(100%);
    padding: 24px;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .details-panel.open {
    transform: translateY(0);
    width: 100%;
    padding: 24px;
  }
  
  .stats-card {
    top: 12px;
    padding: 10px 16px;
    gap: 16px;
  }
}

/* Map Legend Overlay */
.map-legend {
  position: absolute;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border-radius: var(--border-radius-lg);
  border: var(--card-border);
  box-shadow: var(--shadow-main);
  font-size: 12px;
  min-width: 220px;
  z-index: 5;
}

.legend-title {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-color);
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: var(--transition-smooth);
}

.legend-item:hover {
  opacity: 0.8;
  transform: translateX(3px);
}

.legend-item.disabled {
  opacity: 0.35;
}

.legend-item.disabled .legend-dot {
  box-shadow: none !important;
  filter: grayscale(1) opacity(0.5);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  display: inline-block;
  transition: var(--transition-smooth);
}