:root {
    color-scheme: light dark;
    --bg: #0b1220;
    --panel: #131c2e;
    --border: #263148;
    --text: #e7ecf5;
    --muted: #8b97ad;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --error: #f87171;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.navbar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    flex: 0 0 auto;
}

.navbar-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.navbar-actions {
    position: relative;
}

#check-updates-btn {
    padding: 7px 12px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
}

#check-updates-btn:hover {
    border-color: var(--accent);
}

#check-updates-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

.update-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 300px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    padding: 10px;
    z-index: 10;
}

.update-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 4px;
    font-size: 0.8rem;
}

.update-row .basin-label {
    color: var(--text);
}

.update-row .basin-status {
    font-size: 0.72rem;
    font-weight: 600;
    white-space: nowrap;
}

.update-row .basin-status.ok { color: #4ade80; }
.update-row .basin-status.stale { color: #fbbf24; }
.update-row .basin-status.missing { color: var(--muted); }
.update-row .basin-status.error { color: var(--error); }

.layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 1px;
    flex: 1;
    min-height: 0;
    background: var(--border);
}

.panel {
    background: var(--panel);
    padding: 24px;
    overflow-y: auto;
}

.subtitle {
    margin: 0 0 20px;
    color: var(--muted);
    font-size: 0.85rem;
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin: 16px 0 6px;
    color: var(--text);
}

label.small {
    margin: 0 0 4px;
    font-weight: 500;
    color: var(--muted);
    text-transform: uppercase;
    font-size: 0.68rem;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 8px 10px;
    background: #0d1524;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
}

.hint {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.72rem;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.field-row.four {
    grid-template-columns: repeat(4, 1fr);
}

.month-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

.checkbox-pill {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 4px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #0d1524;
    font-size: 0.8rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-pill input {
    accent-color: var(--accent);
}

.tab-group {
    margin-top: 4px;
}

.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    padding: 8px 14px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}

.tab-btn:hover {
    color: var(--text);
}

.tab-btn.active {
    color: var(--text);
    border-bottom-color: var(--accent);
}

.tab-panel {
    padding-top: 4px;
}

.tab-panel[hidden] {
    display: none;
}

.empty-hint {
    color: var(--muted);
    font-size: 0.85rem;
}

button#generate-btn {
    width: 100%;
    margin-top: 24px;
    padding: 11px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}

button#generate-btn:hover {
    background: var(--accent-hover);
}

button#generate-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

.error {
    margin: 10px 0 0;
    color: var(--error);
    font-size: 0.82rem;
    min-height: 1em;
}

.results {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.status {
    color: var(--muted);
    font-size: 0.9rem;
}

.status.loading {
    color: var(--accent);
}

.map-info-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.map-info {
    font-size: 0.82rem;
    color: var(--muted);
}

.map-info strong {
    color: var(--text);
}

.download-map-btn {
    flex: 0 0 auto;
    padding: 5px 10px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.download-map-btn:hover {
    border-color: var(--accent);
}

.download-map-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

.map-container {
    height: 560px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    background: #0d1524;
}

.map-legend {
    background: rgba(19, 28, 46, 0.9);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    font-size: 0.75rem;
    line-height: 1.5;
}

.map-legend .swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    margin-right: 6px;
}

.storm-info {
    background: rgba(19, 28, 46, 0.95);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    font-size: 0.75rem;
    width: 240px;
    max-height: 320px;
    overflow-y: auto;
}

.storm-info-section {
    margin-bottom: 8px;
}

.storm-info-section:last-child {
    margin-bottom: 0;
}

.storm-info-heading {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
    padding-bottom: 3px;
    margin-bottom: 4px;
}

.storm-info-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 1px 0;
}

.storm-info-row span:first-child {
    color: var(--muted);
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }
}