:root {
    /* Light theme (default) */
    --bg: #f5f5f7;
    --card: #ffffff;
    --card-border: #e2e2e7;
    --text: #1c1c1e;
    --text-dim: #8e8e93;
    --green: #34c759;
    --red: #ff3b30;
    --yellow: #c49000;
    --blue: #4a90d9;
    --orange: #d47a1a;
    --pink: #e85d75;
    --purple: #7c6fd4;
    --teal: #2ebda0;
    --tab-bg: #ffffff;
    --tab-height: 56px;
    --font-scale: 1;
  }

  [data-theme="dark"] {
    --bg: #1a1a2e;
    --card: #16213e;
    --card-border: #2a2f5b;
    --text: #fef0f5;
    --text-dim: #b8a9c9;
    --green: #7bed9f;
    --red: #ff6b81;
    --yellow: #eccc68;
    --blue: #70a1ff;
    --orange: #ff9f43;
    --pink: #ff6b9d;
    --purple: #a29bfe;
    --teal: #55efc4;
    --tab-bg: #0f0f23;
  }

  [data-theme="powder"] {
    --bg: #0b1628;
    --card: #0f1f3a;
    --card-border: #1c3366;
    --text: #e8f1ff;
    --text-dim: #8babc7;
    --green: #7bed9f;
    --red: #ff6b6b;
    --yellow: #ffd93d;
    --blue: #5cb8ff;
    --orange: #ff9f43;
    --pink: #5cb8ff;
    --purple: #88a4ff;
    --teal: #4fd1c5;
    --tab-bg: #060e1c;
  }

  [data-theme="sakura"] {
    --bg: #1e0a14;
    --card: #2d1423;
    --card-border: #4a2040;
    --text: #ffe8f0;
    --text-dim: #c9a0b4;
    --green: #7bed9f;
    --red: #ff6b81;
    --yellow: #ffd93d;
    --blue: #85b8ff;
    --orange: #ff9f43;
    --pink: #ff85a2;
    --purple: #c77dba;
    --teal: #f0b3d0;
    --tab-bg: #150812;
  }

  [data-theme="sunset"] {
    --bg: #1a0f05;
    --card: #2e1a0a;
    --card-border: #4d3018;
    --text: #fff0e0;
    --text-dim: #c9a888;
    --green: #7bed9f;
    --red: #ff6b81;
    --yellow: #ffd93d;
    --blue: #70a1ff;
    --orange: #ff8c42;
    --pink: #ff8c42;
    --purple: #ffb347;
    --teal: #ff6b6b;
    --tab-bg: #120a03;
  }

  html { font-size: calc(16px * var(--font-scale, 1)); }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { overflow-x: hidden; }
  body {
    font-family: 'Nunito', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    padding: 10px 12px;
    padding-bottom: calc(var(--tab-height) + 10px);
  }

  /* Hero (mountain + header + summary) */
  .hero {
    position: relative;
    margin-bottom: 8px;
  }
  .header-mountain {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 120px;
    background: var(--pink);
    opacity: 0.4;
    -webkit-mask-image: url(yotei.png);
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: left center;
    mask-image: url(yotei.png);
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: left center;
  }
  .hero-content {
    text-align: center;
  }
  header {
    margin-bottom: 4px;
  }
  .header-line1 {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--pink), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .header-line2 {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-top: 2px;
  }
  .header-line2 span { display: inline-flex; align-items: center; gap: 3px; white-space: nowrap; }

  /* Summary - single line */
  .summary-bar {
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
  }
  .summary-chip {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.72rem;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
  }
  .summary-chip .count { font-weight: 700; font-size: 0.9rem; }

  /* Changes banner */
  .changes-banner {
    background: color-mix(in srgb, var(--pink) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--pink) 30%, transparent);
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 8px;
    display: none;
  }
  .changes-banner.visible { display: block; }
  .changes-banner h3 {
    color: var(--orange);
    font-size: 0.8rem;
    margin-bottom: 4px;
  }
  .change-item {
    font-size: 0.75rem;
    color: var(--yellow);
    padding: 2px 0;
  }
  .change-item .time { color: var(--orange); margin-right: 4px; }

  /* Bottom tab bar */
  .tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tab-height);
    background: var(--tab-bg);
    border-top: 1px solid var(--card-border);
    display: flex;
    z-index: 100;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.08);
  }
  .tab-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
    -webkit-tap-highlight-color: transparent;
  }
  .tab-btn .tab-icon { font-size: 19px; }
  .tab-btn.active { color: var(--pink); }
  .tab-btn:hover { color: var(--text); }

  /* Tab content */
  .tab-panel { display: none; }
  .tab-panel.active { display: block; }

  /* Trail map tab */
  .trail-map-container {
    width: 100%;
    height: calc(100vh - var(--tab-height) - 80px);
    overflow: hidden;
    border-radius: 10px;
    background: var(--bg);
    position: relative;
    touch-action: none;
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
  }
  .trail-map-container:active { cursor: grabbing; }
  .trail-map-container img {
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    will-change: transform;
    max-width: none;
    pointer-events: none;
    -webkit-user-drag: none;
  }
  .trail-map-controls {
    position: absolute;
    bottom: 12px;
    right: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 10;
  }
  .trail-map-controls button {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: color-mix(in srgb, var(--card) 90%, transparent);
    color: var(--text);
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .trail-map-controls button:active { background: color-mix(in srgb, var(--card-border) 90%, transparent); }
  .trail-map-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    font-size: 0.9rem;
  }

  /* Weather tab */
  .weather-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: 12px;
  }
  .weather-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 14px;
  }
  .weather-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--pink);
  }
  .wx-stations {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .wx-station h4 {
    font-size: 0.7rem;
    color: var(--purple);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
  }
  .wx-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    padding: 2px 0;
  }
  .wx-row .wx-label { color: var(--text-dim); }
  .wx-row .wx-val { text-align: right; }
  .wx-temp {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--teal);
  }
  .wx-condition {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 6px;
  }

  /* Lifts tab */
  .resorts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: 12px;
    padding-bottom: 60vh;
  }
  .resort-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 10px;
  }
  .resort-header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card);
    position: sticky;
    top: 0;
    z-index: 10;
  }
  .resort-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--pink);
    display: flex;
    align-items: baseline;
    gap: 6px;
  }
  .resort-updated {
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--text-dim);
    white-space: nowrap;
  }
  .resort-stats {
    font-size: 0.75rem;
    color: var(--text-dim);
  }
  .resort-stats .open-count { color: var(--green); font-weight: 600; }

  .lift-list { padding: 2px 0; }
  .lift-row {
    padding: 7px 14px;
    border-bottom: 1px solid color-mix(in srgb, var(--card-border) 50%, transparent);
    transition: background 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .lift-row:last-child { border-bottom: none; }
  .lift-row.changed {
    background: color-mix(in srgb, var(--orange) 15%, transparent);
    animation: flash 3s ease-out;
  }
  @keyframes flash {
    0% { background: color-mix(in srgb, var(--orange) 30%, transparent); }
    100% { background: transparent; }
  }
  .lift-info {
    flex: 1;
    min-width: 0;
  }
  .lift-name {
    font-size: 0.88rem;
    font-weight: 500;
  }
  .lift-detail {
    font-size: 0.7rem;
    color: var(--text-dim);
  }
  .lift-status-text {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
    text-align: right;
    flex-shrink: 0;
  }
  .lift-status-text.operating { color: var(--green); }
  .lift-status-text.slowed { color: var(--yellow); }
  .lift-status-text.standby { color: var(--blue); }
  .lift-status-text.on-hold { color: var(--orange); }
  .lift-status-text.closed { color: var(--purple); }

  .error-banner {
    background: color-mix(in srgb, var(--red) 15%, transparent);
    border: 1px solid color-mix(in srgb, var(--red) 30%, transparent);
    color: var(--red);
    border-radius: 8px;
    padding: 8px;
    margin-bottom: 8px;
    text-align: center;
    font-size: 0.8rem;
    display: none;
  }
  .error-banner.visible { display: block; }

  .loading {
    text-align: center;
    padding: 60px;
    color: var(--text-dim);
    font-size: 1rem;
  }
  .loading .spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--card-border);
    border-top-color: var(--pink);
    border-radius: 50%;
    margin: 0 auto 12px;
    animation: spin 0.8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* Settings tab */
  .settings-content {
    padding: 4px 0;
    max-width: 500px;
  }
  .settings-content h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
  }
  .theme-picker {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
  }
  .theme-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    gap: 4px;
  }
  .swatch-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-border);
    transition: border-color 0.2s;
  }
  .theme-swatch.selected .swatch-circle {
    border: 2px solid var(--pink);
  }
  .swatch-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
  }
  .swatch-label {
    font-size: 0.7rem;
    color: var(--text-dim);
  }
  .theme-swatch.selected .swatch-label {
    color: var(--pink);
    font-weight: 600;
  }
  .font-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
  }
  .font-option {
    padding: 12px 16px;
    border-radius: 8px;
    background: var(--card);
    border: 1px solid var(--card-border);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text);
    transition: background 0.2s;
  }
  .font-option:hover {
    background: color-mix(in srgb, var(--card-border) 50%, var(--card));
  }
  .font-option.selected {
    background: color-mix(in srgb, var(--pink) 15%, transparent);
    border-color: var(--pink);
    color: var(--pink);
    font-weight: 600;
  }
  .font-preview {
    color: var(--text-dim);
    font-size: 0.9rem;
  }

  @media (max-width: 600px) {
    body { padding: 6px; padding-bottom: calc(var(--tab-height) + 6px); }
    .resorts { grid-template-columns: 1fr; }
    .weather-grid { grid-template-columns: 1fr; }
    .summary-bar { gap: 4px; }
    .summary-chip { padding: 3px 6px; font-size: 0.68rem; }
    .summary-chip .count { font-size: 0.82rem; }
  }