/* ── Design tokens ─────────────────────────────────────────────────────────── */
:root {
    --color-ground:    #1a1610;   /* near-black, dark topsoil */
    --color-surface:   #231f18;   /* card surface */
    --color-border:    #3a3428;   /* subtle rule */
    --color-accent:    #b8934a;   /* dried-grass ochre */
    --color-accent-lo: #7a5f2a;   /* muted ochre for fills */
    --color-alert:     #c0392b;   /* drought red */
    --color-text:      #e8dfc8;   /* warm off-white */
    --color-muted:     #8a7d62;   /* secondary text */

    --font-display: 'Fraunces', Georgia, serif;
    --font-mono:    'DM Mono', 'Courier New', monospace;
}

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

html, body {
    background: var(--color-ground);
    color:      var(--color-text);
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}

/* ── Shell ─────────────────────────────────────────────────────────────────── */
.shell {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

/* ── Header ────────────────────────────────────────────────────────────────── */
.site-header {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 28px 0 32px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 36px;
}

.site-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 300;
    font-style: italic;
    color: var(--color-accent);
    letter-spacing: 0.01em;
}

.site-sub {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ── Alert banner ──────────────────────────────────────────────────────────── */
.alert-banner {
    background: #2c1210;
    border: 1px solid var(--color-alert);
    border-radius: 4px;
    color: #e87b6f;
    padding: 12px 16px;
    margin-bottom: 24px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-icon {
    font-size: 1.1rem;
}

/* ── Reading card ──────────────────────────────────────────────────────────── */
.reading-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 28px 28px 24px;
    margin-bottom: 28px;
    transition: border-color 0.3s;
}

.reading-card--alert {
    border-color: var(--color-alert);
}

.reading-label {
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 10px;
}

.reading-value {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 16px;
}

.reading-number {
    font-family: var(--font-display);
    font-size: 4.5rem;
    font-weight: 300;
    line-height: 1;
    color: var(--color-accent);
}

.reading-unit {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--color-muted);
}

.reading-value--empty .reading-number {
    color: var(--color-muted);
    font-size: 3rem;
}

/* moisture bar */
.reading-bar-track {
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    margin-bottom: 12px;
    overflow: hidden;
}

.reading-bar-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 2px;
    transition: width 0.6s ease;
    min-width: 2px;
}

.reading-time {
    font-size: 0.72rem;
    color: var(--color-muted);
    letter-spacing: 0.04em;
}

/* ── Chart section ─────────────────────────────────────────────────────────── */
.chart-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 22px 22px 16px;
    margin-bottom: 28px;
}

.chart-label {
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 16px;
}

.chart {
    width: 100%;
    height: 160px;
    display: block;
}

.chart-axis {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: var(--color-muted);
    margin-top: 8px;
    letter-spacing: 0.03em;
}

.chart-empty {
    font-size: 0.8rem;
    color: var(--color-muted);
    padding: 24px 0;
    text-align: center;
}

/* ── Log section ───────────────────────────────────────────────────────────── */
.log-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 22px;
}

.log-label {
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 14px;
}

.log-table {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.log-row {
    display: grid;
    grid-template-columns: 1fr 80px 50px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.78rem;
    color: var(--color-text);
    column-gap: 16px;
}

.log-row:last-child {
    border-bottom: none;
}

.log-row--header {
    color: var(--color-muted);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.log-row--alert {
    color: #e87b6f;
}

/* ── Dashboard wrapper ─────────────────────────────────────────────────────── */
.dashboard {
    animation: fade-in 0.4s ease;
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
    .reading-number { font-size: 3.2rem; }
    .log-row { grid-template-columns: 1fr 64px 40px; font-size: 0.72rem; }
}