/* ========================================
   CSS Variables - Light/Dark Theme
   ======================================== */
:root {
  /* Light Theme Colors - Warm Minimalist */
  --bg-primary: #faf9f7;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f5f3f0;
  
  --text-primary: #2c2c2c;
  --text-secondary: #5a5a5a;
  --text-muted: #8a8a8a;
  
  --border-color: #e8e6e3;
  --shadow-color: rgba(0, 0, 0, 0.06);
  --shadow-hover: rgba(0, 0, 0, 0.1);
  
  /* Status Colors - Muted */
  --status-success: #5a9a5a;
  --status-warning: #c9a227;
  --status-error: #c95a5a;
  --status-none: #e0e0e0;
  
  /* Accent Colors - Terracotta */
  --accent-primary: #c4715a;
  --accent-secondary: #8b6f47;
  --accent-gradient: linear-gradient(135deg, #c4715a 0%, #a85d48 100%);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Dark Theme - Warm Dark */
[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #242424;
  --bg-card: #2d2d2d;
  --bg-hover: #363636;
  
  --text-primary: #e8e6e3;
  --text-secondary: #b8b5b0;
  --text-muted: #7a7772;
  
  --border-color: #3d3d3d;
  --shadow-color: rgba(0, 0, 0, 0.4);
  --shadow-hover: rgba(0, 0, 0, 0.5);
  
  --status-success: #6aaa6a;
  --status-warning: #d4b43a;
  --status-error: #d46a6a;
  --status-none: rgba(255, 255, 255, 0.08);
  
  --accent-primary: #d4846a;
  --accent-secondary: #a08060;
  --accent-gradient: linear-gradient(135deg, #d4846a 0%, #b86d56 100%);
}

/* Auto Theme - Follow System */
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-card: #2d2d2d;
    --bg-hover: #363636;
    
    --text-primary: #e8e6e3;
    --text-secondary: #b8b5b0;
    --text-muted: #7a7772;
    
    --border-color: #3d3d3d;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --shadow-hover: rgba(0, 0, 0, 0.5);
    
    --status-success: #6aaa6a;
    --status-warning: #d4b43a;
    --status-error: #d46a6a;
    --status-none: rgba(255, 255, 255, 0.08);
    
    --accent-primary: #d4846a;
    --accent-secondary: #a08060;
    --accent-gradient: linear-gradient(135deg, #d4846a 0%, #b86d56 100%);
  }
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  opacity: 0.8;
}

/* ========================================
   Page Layout
   ======================================== */
.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.page-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 100;
}

.header-content {
  flex: 1;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.title-icon {
  font-size: 1.5rem;
  color: var(--accent-primary);
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Join Button */
.join-btn {
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

.join-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 113, 90, 0.35);
  opacity: 1;
}

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: var(--bg-card);
  box-shadow: 0 2px 8px var(--shadow-color);
}

.theme-icon {
  font-size: 1.25rem;
}

[data-theme="dark"] .theme-icon.light,
[data-theme="auto"][data-system-theme="dark"] .theme-icon.light {
  display: none;
}

[data-theme="light"] .theme-icon.dark,
[data-theme="auto"][data-system-theme="light"] .theme-icon.dark {
  display: none;
}

/* Main Content */
.page-main {
  flex: 1;
  padding: var(--spacing-xl);
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
}

/* Footer */
.page-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-md) var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ========================================
   Monitoring Grid
   ======================================== */
.monitoring-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* Mobile: 1 column */
@media (max-width: 599px) {
  .monitoring-grid {
    grid-template-columns: 1fr;
  }
  
  .page-header {
    padding: var(--spacing-md);
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
  }
  
  .header-content {
    flex: 1 1 auto;
    min-width: 0;
  }
  
  .page-title {
    font-size: 1.25rem;
    margin-bottom: 0;
  }
  
  .page-subtitle {
    display: none;
  }
  
  .header-actions {
    flex: 0 0 auto;
    gap: var(--spacing-xs);
  }
  
  .join-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
  }
  
  .join-btn iconify-icon {
    font-size: 1rem;
  }
  
  .theme-toggle {
    padding: var(--spacing-xs);
  }
  
  .theme-icon {
    font-size: 1.1rem;
  }
  
  .page-main {
    padding: var(--spacing-md);
  }
}

/* Tablet: 2 columns */
@media (min-width: 600px) and (max-width: 1023px) {
  .monitoring-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: 3-4 columns */
@media (min-width: 1024px) and (max-width: 1439px) {
  .monitoring-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Large Desktop: 4-5 columns */
@media (min-width: 1440px) {
  .monitoring-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Extra Large: 5 columns */
@media (min-width: 1800px) {
  .monitoring-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ========================================
   Monitor Card
   ======================================== */
.monitor-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px var(--shadow-color);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 1px solid var(--border-color);
  position: relative;
}

.monitor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-hover);
}

/* Status Indicator Strip */
.monitor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--status-none);
}

.monitor-card.status-available::before {
  background: var(--status-success);
}

.monitor-card.status-unavailable::before {
  background: var(--status-error);
}

.monitor-card.status-unavailable {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(255, 77, 79, 0.05) 100%);
}

/* Card Header */
.card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.site-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-hover);
  border: 2px solid var(--border-color);
}

.site-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.site-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.monitor-card.status-unavailable .site-title {
  color: var(--status-error);
}

.site-url {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  margin-top: 2px;
}

.card-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.action-btn {
  background: transparent;
  border: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.action-btn:hover {
  background: var(--bg-hover);
  color: var(--accent-primary);
}

/* Card Screenshot */
.card-screenshot {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-hover);
  position: relative;
}

.card-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--transition-normal);
}

.monitor-card:hover .card-screenshot img {
  transform: scale(1.03);
}

/* Card Footer - Daily Status */
.card-footer {
  padding: var(--spacing-md);
}

.daily-status-bar {
  display: flex;
  gap: 2px;
  height: 12px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-hover);
}

.daily-status-item {
  flex: 1;
  height: 100%;
  position: relative;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.daily-status-item:hover {
  opacity: 0.8;
}

.daily-status-item.status-success {
  background: var(--status-success);
}

.daily-status-item.status-partial {
  background: var(--status-warning);
}

.daily-status-item.status-fail {
  background: var(--status-error);
}

.daily-status-item.status-none {
  background: var(--status-none);
}

/* Tooltip */
.daily-status-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  z-index: 10;
  margin-bottom: 6px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.daily-status-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: rgba(0, 0, 0, 0.85);
}

.daily-status-item:hover .daily-status-tooltip {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   Loading & Error States
   ======================================== */
.loading-message,
.error-message,
.none-message {
  grid-column: 1 / -1;
  padding: var(--spacing-xl);
  text-align: center;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.error-message {
  color: var(--status-error);
  background: rgba(255, 77, 79, 0.05);
  border: 1px solid rgba(255, 77, 79, 0.2);
}

.spin {
  animation: spin 1s linear infinite;
  font-size: 2rem;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ========================================
   History Modal
   ======================================== */
.history-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.history-modal.active {
  display: flex;
}

.history-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.history-modal-content {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease;
}

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

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

.history-modal-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
}

.history-modal-close {
  background: transparent;
  border: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.history-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) 0;
}

/* History List */
.history-section-title {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-hover);
  margin-top: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.history-section-title:first-child {
  margin-top: 0;
}

.toggle-icon {
  transition: transform var(--transition-fast);
}

.history-section-title.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.history-list {
  list-style: none;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.history-item:last-child {
  border-bottom: none;
}

.history-item.history-monthly {
  border-left: 3px solid var(--accent-primary);
}

.history-item.success {
  border-left: 3px solid var(--status-success);
}

.history-item.warning {
  border-left: 3px solid var(--status-warning);
}

.history-item.fail {
  border-left: 3px solid var(--status-error);
}

.history-time {
  color: var(--text-secondary);
  font-family: monospace;
  font-size: 0.85rem;
}

.history-status {
  font-weight: 600;
}

.history-item.success .history-status {
  color: var(--status-success);
}

.history-item.warning .history-status {
  color: var(--status-warning);
}

.history-item.fail .history-status {
  color: var(--status-error);
}

.history-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Progress Bar */
.progress-bar-bg {
  width: 100%;
  height: 8px;
  background: var(--bg-hover);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-normal);
}

/* Detail List (Collapsible) */
.history-detail-list {
  max-height: 300px;
  overflow-y: auto;
}

.history-detail-list::-webkit-scrollbar {
  width: 6px;
}

.history-detail-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.history-detail-list::-webkit-scrollbar-track {
  background: transparent;
}

/* Mobile Modal Adjustments */
@media (max-width: 599px) {
  .history-modal-content {
    max-height: 90vh;
    margin: var(--spacing-sm);
  }
  
  .history-modal-header,
  .history-item {
    padding: var(--spacing-md);
  }
}

/* ========================================
   Pagination
   ======================================== */
.pagination-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-md);
}

.pagination-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.pagination-info span {
  color: var(--accent-primary);
  font-weight: 600;
}

@media (max-width: 599px) {
  .pagination-container {
    gap: var(--spacing-md);
  }
  
  .pagination-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
  }
  
  .pagination-info {
    font-size: 0.85rem;
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
  display: none !important;
}

.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;
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
  position: fixed;
  top: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px var(--shadow-color);
  border: 1px solid var(--border-color);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.95rem;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.toast-icon {
  font-size: 1.1rem;
  color: var(--accent-primary);
}

@media (max-width: 599px) {
  .toast {
    top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.85rem;
  }
}