/* Custom Dark Glassmorphism Styling */

:root {
  /* HSL Tailored Colors */
  --bg-color: hsl(222, 47%, 7%);
  --bg-glow: radial-gradient(circle at 50% 50%, hsl(220, 40%, 15%) 0%, hsl(222, 47%, 7%) 100%);
  --glass-bg: hsla(218, 40%, 12%, 0.55);
  --glass-border: hsla(218, 40%, 30%, 0.3);
  --glass-border-focus: hsla(218, 60%, 50%, 0.5);
  
  --text-primary: hsl(0, 0%, 96%);
  --text-secondary: hsl(215, 20%, 75%);
  --text-muted: hsl(215, 15%, 55%);
  
  /* Accent Colors */
  --primary-color: hsl(200, 100%, 50%); /* River Cyan */
  --primary-glow: hsla(200, 100%, 50%, 0.2);
  
  --safe-color: hsl(145, 80%, 45%);
  --safe-glow: hsla(145, 80%, 45%, 0.15);
  --warning-color: hsl(38, 95%, 55%);
  --warning-glow: hsla(38, 95%, 55%, 0.15);
  --danger-color: hsl(355, 85%, 55%);
  --danger-glow: hsla(355, 85%, 55%, 0.2);
  
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --font-display: 'Outfit', 'Sarabun', system-ui, sans-serif;
  --font-body: 'Inter', 'Sarabun', system-ui, sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Overrides */
body.light-theme {
  --bg-color: hsl(210, 30%, 95%);
  --bg-glow: radial-gradient(circle at 50% 50%, hsl(210, 40%, 98%) 0%, hsl(210, 30%, 90%) 100%);
  --glass-bg: hsla(0, 0%, 100%, 0.65);
  --glass-border: hsla(218, 20%, 60%, 0.3);
  --glass-border-focus: hsla(218, 60%, 50%, 0.5);
  
  --text-primary: hsl(222, 47%, 15%);
  --text-secondary: hsl(220, 20%, 35%);
  --text-muted: hsl(220, 15%, 45%);
  
  /* Accent Colors adjustments for light mode (optional) */
  --primary-color: hsl(200, 90%, 45%);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}

body {
  background-color: var(--bg-color);
  background-image: var(--bg-glow);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  padding: 24px;
}

/* Glassmorphism Background Effect */
.glass-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.5;
  background-image: 
    radial-gradient(circle at 10% 20%, hsla(200, 100%, 50%, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, hsla(220, 100%, 40%, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Header */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 20px 30px;
  box-shadow: var(--card-shadow);
  flex-wrap: wrap;
  gap: 20px;
}

.header-title {
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo-glow {
  background: linear-gradient(135deg, var(--primary-color), hsl(220, 100%, 55%));
  border-radius: 14px;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--primary-glow);
}

.icon-logo {
  color: white;
  width: 28px;
  height: 28px;
}

.header-title h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 50%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-title p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 2px;
}

.source-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.source-tag a {
  color: var(--primary-color);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.source-tag a:hover {
  color: hsl(200, 100%, 70%);
}

.icon-sm {
  width: 14px;
  height: 14px;
  color: var(--primary-color);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
}

.control-group label {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

input[type="date"] {
  background: hsla(218, 40%, 5%, 0.5);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 8px 12px;
  font-family: var(--font-body);
  outline: none;
  transition: var(--transition-smooth);
}

input[type="date"]:focus {
  border-color: var(--glass-border-focus);
  box-shadow: 0 0 8px var(--primary-glow);
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 22px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: hsla(218, 40%, 20%, 0.6);
  border: 1px solid var(--glass-border);
  transition: .3s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-primary);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
  box-shadow: 0 0 10px var(--primary-glow);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), hsl(210, 100%, 45%));
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
  filter: brightness(1.1);
}

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

/* Banner */
.banner {
  background: hsla(38, 95%, 55%, 0.15);
  border: 1px solid var(--warning-color);
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--warning-color);
  font-size: 0.9rem;
  animation: pulse-border 2s infinite ease-in-out;
}

.hidden {
  display: none !important;
}

/* Metrics Grid / Cards */
.stations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
}

@media (max-width: 980px) {
  .stations-grid {
    grid-template-columns: 1fr;
  }
}

.station-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

.station-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-border-focus);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.station-badge {
  background: hsla(218, 40%, 5%, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--primary-color);
  padding: 6px 12px;
  border-radius: 8px;
  font-weight: 700;
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.station-details h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

.station-details p {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-top: 1px;
}

/* Badges / Indicators */
.status-indicator {
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-indicator.safe {
  background: var(--safe-glow);
  border: 1px solid var(--safe-color);
  color: var(--safe-color);
  box-shadow: 0 0 10px var(--safe-glow);
}

.status-indicator.warning {
  background: var(--warning-glow);
  border: 1px solid var(--warning-color);
  color: var(--warning-color);
  box-shadow: 0 0 10px var(--warning-glow);
  animation: pulse-glow-warning 2.5s infinite;
}

.status-indicator.danger {
  background: var(--danger-glow);
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
  box-shadow: 0 0 15px var(--danger-glow);
  animation: pulse-glow-danger 1.5s infinite;
}

/* Metric Row Inside Cards */
.metric-row {
  display: flex;
  gap: 20px;
}

.metric-box {
  flex: 1;
  background: hsla(218, 40%, 5%, 0.35);
  border: 1px solid hsla(218, 40%, 30%, 0.15);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.metric-label {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.metric-unit {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.progress-bar-container {
  background: hsla(218, 40%, 20%, 0.5);
  border-radius: 4px;
  height: 6px;
  width: 100%;
  margin-top: 10px;
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--safe-color));
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s ease-out;
}

.station-card.near-limit .progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--warning-color));
}

.station-card.overflow-limit .progress-bar {
  background: linear-gradient(90deg, var(--warning-color), var(--danger-color));
}

.limit-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 6px;
}

.station-meta-info {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--glass-border);
  margin-top: 20px;
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.icon-meta {
  width: 13px;
  height: 13px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 4px;
  color: var(--text-muted);
}

/* Charts Section */
.charts-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
  gap: 24px;
}

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

.chart-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.chart-header {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.icon-chart {
  color: var(--primary-color);
  width: 20px;
  height: 20px;
}

.chart-header h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 350px;
}

/* Table Section */
.table-section {
  margin-top: 8px;
}

.table-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.table-header {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.icon-table {
  color: var(--primary-color);
  width: 20px;
  height: 20px;
}

.table-header h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  flex: 1;
}

.date-badge {
  background: hsla(200, 100%, 50%, 0.1);
  border: 1px solid hsla(200, 100%, 50%, 0.2);
  color: var(--primary-color);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: center;
}

.data-table th, .data-table td {
  padding: 10px 14px;
  border: 1px solid var(--glass-border);
}

.data-table th {
  background: hsla(218, 40%, 10%, 0.6);
  font-weight: 600;
  color: var(--text-secondary);
}

.col-time {
  width: 80px;
}

.col-group-y20 {
  background: hsla(200, 80%, 40%, 0.15) !important;
  color: hsl(200, 100%, 80%) !important;
}

.col-group-y1c {
  background: hsla(160, 80%, 40%, 0.15) !important;
  color: hsl(160, 100%, 80%) !important;
}

.data-table tbody tr {
  transition: background-color 0.2s ease;
}

.data-table tbody tr:hover {
  background-color: hsla(218, 40%, 30%, 0.1);
}

.data-table tbody tr:nth-child(even) {
  background-color: hsla(218, 40%, 15%, 0.15);
}

.cell-warning {
  color: var(--warning-color);
  font-weight: 600;
  background-color: hsla(38, 95%, 55%, 0.05);
}

.cell-danger {
  color: var(--danger-color);
  font-weight: 600;
  background-color: hsla(355, 85%, 55%, 0.08);
  animation: pulse-danger-bg 2s infinite;
}

.loading-cell {
  padding: 40px;
  color: var(--text-muted);
  font-style: italic;
}

/* Footer */
.app-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 24px 0 10px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tech-stack {
  color: var(--text-muted);
  opacity: 0.7;
}

/* Utilities Icons */
.icon-small {
  width: 14px;
  height: 14px;
}
.icon-btn {
  width: 16px;
  height: 16px;
}

/* Animations */
@keyframes pulse-border {
  0%, 100% { border-color: var(--warning-color); }
  50% { border-color: transparent; }
}

@keyframes pulse-glow-warning {
  0%, 100% { box-shadow: 0 0 10px var(--warning-glow); }
  50% { box-shadow: 0 0 16px hsla(38, 95%, 55%, 0.4); }
}

@keyframes pulse-glow-danger {
  0%, 100% { box-shadow: 0 0 10px var(--danger-glow); }
  50% { box-shadow: 0 0 20px hsla(355, 85%, 55%, 0.5); }
}

@keyframes pulse-danger-bg {
  0%, 100% { background-color: hsla(355, 85%, 55%, 0.05); }
  50% { background-color: hsla(355, 85%, 55%, 0.12); }
}

/* Flow Travel Time Section */
.travel-time-section {
  margin-top: 8px;
}

.travel-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.travel-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.travel-card-header h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}

.travel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.travel-step {
  background: hsla(218, 40%, 5%, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
}

.step-station-val {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  width: 100%;
}

.y20-step {
  background: hsla(200, 100%, 50%, 0.1);
  border: 1px solid hsla(200, 100%, 50%, 0.25);
  color: var(--primary-color);
}

.y1c-step {
  background: hsla(145, 80%, 45%, 0.1);
  border: 1px solid hsla(145, 80%, 45%, 0.25);
  color: var(--safe-color);
}

.step-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.icon-arrow {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

.step-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.badge-status-normal {
  background: hsla(145, 80%, 45%, 0.15);
  border: 1px solid var(--safe-color);
  color: var(--safe-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.badge-status-warning {
  background: hsla(38, 95%, 55%, 0.15);
  border: 1px solid var(--warning-color);
  color: var(--warning-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.badge-status-danger {
  background: hsla(355, 85%, 55%, 0.15);
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.badge-status-danger-heavy {
  background: hsla(355, 85%, 55%, 0.2);
  border: 1px solid var(--danger-color);
  color: var(--danger-color);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
  box-shadow: 0 0 8px var(--danger-glow);
  animation: pulse-glow-danger 2s infinite;
}

/* Scrollbar customizations */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--glass-border-focus);
}