:root {
  --sky: #0a1628;
  --sky-mid: #0f2447;
  --sky-light: #1a3a6e;
  --accent: #4fc3f7;
  --accent2: #81d4fa;
  --gold: #ffd54f;
  --green: #69f0ae;
  --red: #ff6b6b;
  --muted: #4a6fa5;
  --text: #cfe2ff;
  --text-dim: #7a9cc0;
  --card: rgba(15, 36, 71, 0.7);
  --border: rgba(79, 195, 247, 0.15);
}

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

body {
  font-family: 'DM Mono', monospace;
  background: var(--sky);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Animated starfield background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 80%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 35%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 20% 90%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 60% 50%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 70%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 15% 45%, rgba(79,195,247,0.4) 0%, transparent 100%),
    radial-gradient(2px 2px at 75% 15%, rgba(79,195,247,0.3) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* Gradient horizon */
body::after {
  content: '';
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 30vh;
  background: linear-gradient(to top, rgba(26,58,110,0.4), transparent);
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}

.station-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1.1;
}

.station-title span {
  display: block;
  font-size: 0.4em;
  font-family: 'DM Mono', monospace;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.3em;
}

.meta { text-align: right; }

.update-time {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.update-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--green);
  margin-top: 0.3rem;
}

.pulse-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.5); }
}

/* Date navigation */
.date-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.date-nav label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.active { border-color: var(--accent); color: var(--accent); background: rgba(79,195,247,0.05); }

/* Clickable elements */
.clickable {
  cursor: pointer;
}

/* Chart hint for hero metrics */
.chart-hint {
  position: absolute;
  bottom: 0.6rem;
  right: 0.8rem;
  font-size: 0.65rem;
  opacity: 0;
  transition: opacity 0.2s;
  color: var(--accent);
}

.hero-metric.clickable:hover .chart-hint { opacity: 0.7; }

/* Chart hint for cards */
.chart-hint-card {
  font-size: 0.6rem;
  color: var(--muted);
  margin-top: 0.75rem;
  opacity: 0;
  transition: opacity 0.2s;
  letter-spacing: 0.05em;
}

.card.clickable:hover .chart-hint-card { opacity: 1; }

/* Hero metrics */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.hero-metric {
  background: var(--card);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: background 0.3s;
  position: relative;
  overflow: hidden;
}

.hero-metric::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.hero-metric:hover::before { opacity: 1; }
.hero-metric:hover { background: rgba(15, 36, 71, 0.9); }

.metric-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.metric-label {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.metric-value {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.metric-unit {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  margin-top: 0.3rem;
}

/* Cards grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(79,195,247,0.35);
  box-shadow: 0 4px 20px rgba(79,195,247,0.08);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.card-icon { font-size: 1.1rem; opacity: 0.7; }

.card-value {
  font-size: 1.8rem;
  font-weight: 500;
  color: #fff;
  line-height: 1;
}

.card-value span {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 300;
  margin-left: 0.3rem;
}

.card-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 0.4rem;
}

/* Bar meter */
.meter {
  margin-top: 0.8rem;
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.8s ease;
}

/* Wind compass */
.compass-wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.compass {
  width: 60px; height: 60px;
  position: relative;
  flex-shrink: 0;
}

.compass-ring {
  width: 100%; height: 100%;
  border: 1px solid rgba(79,195,247,0.3);
  border-radius: 50%;
  position: relative;
}

.compass-ring::before, .compass-ring::after {
  content: '';
  position: absolute;
  background: rgba(79,195,247,0.2);
}

.compass-ring::before {
  width: 1px; height: 100%;
  left: 50%; top: 0; transform: translateX(-50%);
}

.compass-ring::after {
  width: 100%; height: 1px;
  top: 50%; left: 0; transform: translateY(-50%);
}

.compass-arrow {
  position: absolute;
  top: 50%; left: 50%;
  width: 2px; height: 22px;
  margin-left: -1px;
  transform-origin: bottom center;
  background: linear-gradient(to top, transparent 0%, var(--accent) 60%);
  border-radius: 2px;
}

.compass-n {
  position: absolute;
  font-size: 0.55rem;
  color: var(--accent);
  top: 3px; left: 50%; transform: translateX(-50%);
  letter-spacing: 0;
}

.wind-details { flex: 1; }

/* Error / loading */
.status-msg {
  text-align: center;
  padding: 3rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.error-msg { color: var(--red); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.4s ease forwards; }

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.updating .metric-value, .updating .card-value {
  background: linear-gradient(90deg, var(--text) 25%, rgba(255,255,255,0.5) 50%, var(--text) 75%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 1s linear infinite;
}

/* ============================================================
   CHART MODAL
   ============================================================ */
.chart-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(5, 12, 25, 0.85);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.chart-modal.open {
  display: flex;
  animation: fadeIn 0.2s ease forwards;
}

.chart-modal-inner {
  background: var(--sky-mid);
  border: 1px solid rgba(79,195,247,0.25);
  border-radius: 12px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(79,195,247,0.1);
}

.chart-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.chart-modal-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-family: 'DM Mono', monospace;
}

.chart-modal-sub {
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 0.25rem;
  letter-spacing: 0.05em;
}

.modal-close {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.9rem;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
  line-height: 1;
}

.modal-close:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.chart-modal-body {
  padding: 1.5rem;
  flex: 1;
  min-height: 0;
  height: 380px;
  position: relative;
}

.chart-modal-body canvas {
  width: 100% !important;
  height: 100% !important;
}

/* Responsive */
@media (max-width: 680px) {
  .hero { grid-template-columns: 1fr; }
  .hero-metric { padding: 1.25rem 1rem; }
  .metric-value { font-size: 2rem; }
  .chart-modal-inner { max-height: 95vh; }
  .chart-modal-body { padding: 1rem; }
}

@media (max-width: 480px) {
  .container { padding: 1rem; }
  header { margin-bottom: 1.5rem; }
}