/* ========================================
   Monument Scout - Modern CSS Stylesheet
   ======================================== */

/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --primary-blue: #4285f4;
  --primary-red: #ea4335;
  --primary-green: #34a853;
  --primary-yellow: #fbbc04;

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.25);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

  /* Dark mode */
  --dark-bg: rgba(30, 30, 30, 0.95);
  --dark-border: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===== Global Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  overflow: hidden;
  background: #f0f2f5;
}

/* ===== Map Container ===== */
#map {
  height: 100vh;
  width: 100%;
  position: relative;
}

/* ===== Header / Control Panel ===== */
.control-panel {
  position: fixed;
  top: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--glass-shadow);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  max-width: 90vw;
  animation: slideDown 0.5s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.app-title {
  font-size: 20px;
  font-weight: 700;
  color: #333;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
}

.app-title .emoji {
  font-size: 24px;
}

.control-divider {
  width: 1px;
  height: 30px;
  background: rgba(0, 0, 0, 0.1);
}

/* ===== Buttons ===== */
.btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
  background: white;
  color: #333;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--primary-blue);
  color: white;
}

.btn-primary:hover {
  background: #3367d6;
}

.btn-icon {
  padding: var(--spacing-sm);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== Select Dropdown ===== */
.select-wrapper {
  position: relative;
}

select {
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm)
    var(--spacing-md);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: white;
  color: #333;
  appearance: none;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

select:hover {
  border-color: var(--primary-blue);
}

select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

.select-wrapper::after {
  content: "▼";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 10px;
  color: #666;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  right: -400px;
  top: 0;
  width: 400px;
  height: 100vh;
  background: var(--dark-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--dark-border);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
  z-index: 999;
  transition: right var(--transition-normal);
  overflow-y: auto;
  color: white;
}

.sidebar.open {
  right: 0;
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: var(--dark-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 10;
}

.sidebar-title {
  font-size: 18px;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: var(--spacing-xs);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.monument-list {
  padding: var(--spacing-md);
}

.monument-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.monument-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(-4px);
  border-color: var(--primary-blue);
}

.monument-rank {
  display: inline-block;
  background: var(--primary-blue);
  color: white;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  margin-bottom: var(--spacing-xs);
}

.monument-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: white;
}

.monument-type {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xs);
}

.monument-distance {
  font-size: 13px;
  color: var(--primary-blue);
  font-weight: 500;
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.5);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

/* ===== Loading Spinner ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  position: absolute;
  margin-top: 100px;
  color: white;
  font-size: 14px;
  font-weight: 600;
}

/* ===== Message Overlay ===== */
#map-message {
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  z-index: 1001;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: #333;
  max-width: 90vw;
  animation: slideDown 0.3s ease;
}

#map-message.error {
  background: rgba(234, 67, 53, 0.95);
  color: white;
}

#map-message.success {
  background: rgba(52, 168, 83, 0.95);
  color: white;
}

/* ===== Search Box ===== */
.search-box {
  position: fixed;
  top: 100px;
  left: var(--spacing-lg);
  z-index: 1000;
  width: 300px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  animation: slideRight 0.5s ease;
}

@keyframes slideRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.search-input {
  width: 100%;
  padding: var(--spacing-md);
  border: none;
  font-size: 14px;
  outline: none;
}

.search-input::placeholder {
  color: #999;
}

/* ===== Toggle Button (Sidebar) ===== */
.toggle-sidebar-btn {
  position: fixed;
  right: var(--spacing-lg);
  bottom: var(--spacing-lg);
  z-index: 998;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: white;
  border: none;
  box-shadow: 0 4px 16px rgba(66, 133, 244, 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: all var(--transition-fast);
  animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

.toggle-sidebar-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(66, 133, 244, 0.5);
}

.toggle-sidebar-btn:active {
  transform: scale(0.95);
}

.badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary-red);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

/* ===== Custom Scrollbar ===== */
.sidebar::-webkit-scrollbar {
  width: 8px;
}

.sidebar::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .control-panel {
    flex-wrap: wrap;
    padding: var(--spacing-sm) var(--spacing-md);
    gap: var(--spacing-sm);
  }

  .app-title {
    font-size: 16px;
  }

  .app-title .emoji {
    font-size: 20px;
  }

  .control-divider {
    display: none;
  }

  .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 13px;
  }

  select {
    font-size: 13px;
    padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs)
      var(--spacing-sm);
  }

  .sidebar {
    width: 100%;
    right: -100%;
  }

  .search-box {
    width: calc(100% - var(--spacing-lg) * 2);
    top: 120px;
  }

  .toggle-sidebar-btn {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }

  .explanation-container {
    max-width: 100%;
    max-height: 90vh;
    margin: 0;
  }

  .explanation-header h3 {
    font-size: 18px;
  }

  .explanation-footer {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .btn-more-details {
    width: 100%;
  }

  .tts-controls {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .control-panel {
    top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .app-title {
    font-size: 14px;
  }

  .search-box {
    top: 100px;
  }
}

/* ===== Print Styles ===== */
@media print {
  .control-panel,
  .sidebar,
  .toggle-sidebar-btn,
  .search-box,
  #map-message {
    display: none !important;
  }
}

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

/* Focus styles for keyboard navigation */
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* ===== Explanation Modal ===== */
.explanation-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.explanation-modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.explanation-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.explanation-container {
  position: relative;
  background: var(--dark-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.3s ease;
  color: white;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.explanation-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.explanation-header h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: white;
}

.explanation-body {
  padding: var(--spacing-lg);
  overflow-y: auto;
  flex: 1;
  line-height: 1.6;
}

.explanation-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.7);
}

.explanation-loading .spinner {
  margin-bottom: var(--spacing-md);
}

.explanation-loading p {
  margin: 0;
  font-size: 14px;
}

.explanation-text {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.explanation-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.btn-more-details {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-more-details:hover {
  background: #3367d6;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
}

.btn-more-details:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.tts-controls {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-tts {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-tts:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.btn-tts:active {
  transform: scale(0.95);
}

.explain-btn {
  padding: 4px 12px;
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: var(--spacing-xs);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.explain-btn:hover {
  background: #3367d6;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(66, 133, 244, 0.3);
}

.explain-btn:active {
  transform: translateY(0);
}

/* ===== Dark Mode Support ===== */
@media (prefers-color-scheme: dark) {
  .control-panel {
    background: var(--dark-bg);
  }

  .app-title {
    color: white;
  }

  .btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
  }

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

  select {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
  }

  .search-box {
    background: rgba(30, 30, 30, 0.95);
  }

  .search-input {
    background: transparent;
    color: white;
  }

  .search-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
  }
}