:root {
    /* BSV Blockchain brand palette */
    --bg: #04050f;           /* deep navy-black */
    --surface: #080b22;      /* dark navy surface */
    --surface-2: #0e1230;    /* slightly lighter navy */
    --accent: #5a80ff;       /* BSV blue — brightened for dark-bg legibility */
    --accent-dark: #1B1EA9;  /* BSV primary deep blue */
    --accent-warm: #FFBC7D;  /* BSV warm gold */
    --text: #e8edf4;
    --text-muted: #7888b8;   /* blue-tinted muted text */
    --border: #181d4a;       /* blue-tinted border */
    --live: #00d084;
    --live-bg: #011a0e;
    --live-border: #00522e;
    --warn-bg: #1a1000;
    --warn-border: #7a5000;
    --warn-text: #FFBC7D;    /* warm gold for warning text */
}

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

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

.page {
    max-width: 860px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* ── Header ── */

header {
    text-align: center;
    padding-top: 0.5rem;
}

header h1 {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--accent-warm);
}

.subtitle {
    margin-top: 0.4rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* ── Countdown ── */

.countdown-section {
    text-align: center;
}

.countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.countdown-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.4rem 1.8rem;
    min-width: 110px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: border-color 0.3s;
}

.countdown-value {
    font-size: 3.8rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
    line-height: 1;
    min-width: 2ch;
    display: inline-block;
    text-align: center;
}

.countdown-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.countdown-separator {
    font-size: 3rem;
    font-weight: 700;
    color: var(--border);
    padding-bottom: 1.6rem;
    user-select: none;
    line-height: 1;
}

.estimate-label {
    margin-top: 1.2rem;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-style: italic;
}

/* ── Activated State ── */

.activated-section {
    text-align: center;
    padding: 1rem 0;
}

.activated-badge {
    display: inline-block;
    background: var(--live-bg);
    border: 2px solid var(--live-border);
    border-radius: 18px;
    padding: 2.4rem 3.5rem;
}

.activated-icon {
    font-size: 3rem;
    color: var(--live);
    line-height: 1;
    margin-bottom: 0.8rem;
}

.activated-badge h2 {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--live);
    letter-spacing: -0.02em;
}

.activated-badge p {
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 38ch;
}

/* ── Block Info ── */

.block-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.block-stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.block-stat.highlight {
    border-color: var(--accent-warm);
    background: #1a1200;
}

.block-stat.wide {
    grid-column: 1 / -1;
}

.block-stat-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.block-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--text);
}

.block-stat-value.small {
    font-size: 1.05rem;
    font-weight: 700;
}

.block-stat-local {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.block-stat.highlight .block-stat-value {
    color: var(--accent-warm);
}

/* ── Chronicle Context ── */

.chronicle-context {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.8rem 2rem;
}

.chronicle-context h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.chronicle-context p {
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 0.92rem;
}

.chronicle-context code {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    font-size: 0.85em;
    color: var(--accent-warm);
    font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

.docs-link {
    display: inline-block;
    margin-top: 1.1rem;
    color: var(--accent-warm);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.docs-link:hover {
    text-decoration: underline;
    opacity: 0.85;
}

/* ── Activation Transaction Status ── */

.tx-status-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.tx-status-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    flex-shrink: 0;
    min-width: 11rem;
}

.tx-status-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    flex: 1;
}

/* State: not yet broadcast — neutral */
.tx-status-card.tx-not-broadcast {
    border-color: var(--border);
}
.tx-status-card.tx-not-broadcast .tx-status-value {
    color: var(--text-muted);
}

/* State: in mempool — amber */
.tx-status-card.tx-mempool {
    border-color: var(--warn-border);
    background: var(--warn-bg);
}
.tx-status-card.tx-mempool .tx-status-value {
    color: var(--warn-text);
}

/* State: confirmed — green */
.tx-status-card.tx-confirmed {
    border-color: var(--live-border);
    background: var(--live-bg);
}
.tx-status-card.tx-confirmed .tx-status-value {
    color: var(--live);
}

.tx-check-error {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    margin-left: auto;
}

/* ── Footer ── */

footer {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding-bottom: 0.5rem;
}

.api-notice {
    background: var(--warn-bg);
    border: 1px solid var(--warn-border);
    color: var(--warn-text);
    font-size: 0.83rem;
    padding: 0.45rem 1rem;
    border-radius: 6px;
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* ── Responsive ── */

@media (max-width: 620px) {
    .page {
        gap: 2rem;
        padding: 1.8rem 1rem 1.5rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .countdown-box {
        min-width: 76px;
        padding: 1rem 1.1rem;
    }

    .countdown-value {
        font-size: 2.6rem;
    }

    .countdown-separator {
        font-size: 2.2rem;
        padding-bottom: 1.2rem;
    }

    .block-info {
        grid-template-columns: 1fr 1fr;
    }

    .block-stat.wide {
        grid-column: 1 / -1;
    }

    .chronicle-context {
        padding: 1.4rem 1.2rem;
    }

    .activated-badge {
        padding: 1.8rem 2rem;
    }

    .activated-badge h2 {
        font-size: 2rem;
    }
}

@media (max-width: 400px) {
    .countdown {
        gap: 0.35rem;
    }

    .countdown-box {
        min-width: 64px;
        padding: 0.9rem 0.8rem;
    }

    .countdown-value {
        font-size: 2.1rem;
    }
}