/* ── CSS Variables ── */
:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --surface-hover: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --error: #ef4444;
    --border: #334155;
    --radius: 12px;

    /* Sun arc SVG colors */
    --sky-top: #1e3a5f;
    --sky-bottom: #f59e0b;
    --horizon: #475569;
    --arc-color: #fbbf24;
    --sun-color: #fbbf24;
    --label-color: #e2e8f0;
}

/* ── Reset & Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

/* ── Screens ── */
.screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

.error {
    color: var(--error);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 0.75rem;
}

/* ── Dashboard ── */
header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.3rem;
    color: var(--accent);
}

main {
    flex: 1;
    padding: 0.75rem 0.4rem;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

@media (min-width: 500px) {
    main {
        padding: 1.5rem;
    }
}

/* ── Loading ── */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 4rem 0;
    color: var(--text-muted);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ── Sun Arc ── */
.sun-arc-container {
    margin-bottom: 1.5rem;
}

.sun-arc-container svg {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
}

/* ── Earth/Sun Visualization ── */
.earth-sun-container {
    margin-bottom: 1.5rem;
}

.earth-sun-container svg {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
}

/* ── Info Grid ── */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.35rem;
}

.info-grid.top-row {
    margin-bottom: 0.5rem;
}

.info-grid.bottom-row .info-card {
    text-align: center;
}

.info-grid.shaah-row {
    margin-top: 0.5rem;
}

.info-grid.shaah-row .info-card {
    text-align: center;
}

.info-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 0.5rem 0.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
    overflow: hidden;
}

.info-label {
    font-size: 2.2vw;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0;
    white-space: nowrap;
}

.info-value {
    font-size: 3.6vw;
    font-weight: 600;
    white-space: nowrap;
}

.info-sub {
    font-size: 2.8vw;
    color: var(--text-muted);
    white-space: nowrap;
}

@media (min-width: 500px) {
    .info-grid {
        gap: 0.75rem;
    }

    .info-card {
        padding: 1rem 0.75rem;
        gap: 0.25rem;
    }

    .info-label {
        font-size: 0.65rem;
        letter-spacing: 0.03em;
    }

    .info-value {
        font-size: 1.2rem;
    }

    .info-sub {
        font-size: 0.8rem;
    }
}