:root {
  --meteo-blue: #1b4f72;
  --meteo-blue-light: #2e86c1;
  --meteo-red: #c0392b;
  --meteo-border: #ddd;
  --meteo-text: #2c3e50;
  --meteo-text-light: #7f8c8d;
  --sidebar-width: 320px;
}

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

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--meteo-text);
  /* Soft gray-blue so the white chart cards and their rounded corners stand out */
  background: #e8edf2;
  line-height: 1.5;
}

.app-header {
  background: var(--meteo-blue);
  color: white;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.app-header h1 {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.app-header .subtitle {
  font-size: 0.85rem;
  opacity: 0.8;
}

.app-container {
  display: flex;
  min-height: calc(100vh - 56px);
}

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: white;
  border-right: 1px solid var(--meteo-border);
  padding: 20px;
  overflow-y: auto;
}

.sidebar h2 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--meteo-text-light);
  margin-bottom: 8px;
  margin-top: 20px;
}

.sidebar h2:first-child {
  margin-top: 0;
}

.sidebar select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--meteo-border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: white;
  color: var(--meteo-text);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237f8c8d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.sidebar select:focus {
  outline: none;
  border-color: var(--meteo-blue-light);
  box-shadow: 0 0 0 2px rgba(46, 134, 193, 0.2);
}

#station-info {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--meteo-text-light);
}

.data-status {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}

.status-badge {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 10px;
  white-space: nowrap;
}

.status-badge.available {
  background: #d5f5e3;
  color: #1e8449;
}

.status-badge.unavailable {
  background: #fadbd8;
  color: #c0392b;
}

.scenario-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scenario-checkboxes label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 4px 0;
}

.scenario-checkboxes .color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}


.main-content {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}

.chart-container {
  background: white;
  border: 1px solid var(--meteo-border);
  border-radius: 14px;
  margin-bottom: 16px;
  /* Fill the viewport height (minus header, paddings and footer) so each
     chart renders as large as possible; Plotly picks up the container size */
  height: calc(100vh - 160px);
  min-height: 450px;
  box-shadow: 0 2px 8px rgba(30, 50, 70, 0.08);
  /* Clip Plotly's square-cornered canvas to the rounded border so the
     border line runs continuously around the corners */
  overflow: hidden;
  /* Safari refuses to clip composited children (Plotly's WebGL canvas from
     scattergl traces) to border-radius. Force a stacking context and use the
     WebKit mask hack so the rounded clipping also applies there. */
  position: relative;
  z-index: 0;
  -webkit-mask-image: -webkit-radial-gradient(white, black);
}

#param-note {
  display: none;
  background: #fef9e7;
  border: 1px solid #f9e79f;
  border-radius: 6px;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: #7d6608;
  margin-bottom: 12px;
}

#loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--meteo-border);
  border-top-color: var(--meteo-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

#error-message {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--meteo-red);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 1001;
  max-width: 600px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.app-footer {
  padding: 12px 24px;
  font-size: 0.75rem;
  color: var(--meteo-text-light);
  border-top: 1px solid var(--meteo-border);
  background: white;
}

.app-footer a {
  color: var(--meteo-blue-light);
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

.footer-line {
  text-align: center;
}

.footer-details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--meteo-blue);
  text-align: center;
  padding: 4px 0;
  user-select: none;
}

.footer-details summary:hover {
  color: var(--meteo-blue-light);
}

.footer-details[open] {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--meteo-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 1400px;
  margin: 12px auto 0;
  text-align: left;
}

.footer-grid h3 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--meteo-text);
  margin-bottom: 6px;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid li {
  position: relative;
  padding-left: 12px;
  margin-bottom: 4px;
}

.footer-grid li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--meteo-blue-light);
}

@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    min-width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--meteo-border);
    padding: 16px;
  }

  .main-content {
    padding: 12px;
  }

  .chart-container {
    height: 70vh;
    min-height: 300px;
  }
}