:root {
    color-scheme: dark;
    --bg: #121212;
    --panel: #1e1e1e;
    --panel-alt: #262626;
    --accent: #8d0000;
    --accent-strong: #b00000;
    --text: #f4f4f4;
    --muted: #bcbcbc;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: Arial, sans-serif;
    background:
        radial-gradient(circle at top, rgba(141, 0, 0, 0.25), transparent 38%),
        linear-gradient(180deg, #171717 0%, var(--bg) 100%);
    color: var(--text);
}

.app-shell {
    max-width: 720px;
    margin: 0 auto;
    padding: 16px;
}

.hero {
    text-align: center;
    margin-bottom: 18px;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.75rem;
}

.hero h1 {
    margin: 0;
    font-size: clamp(1.8rem, 8vw, 2.8rem);
}

.subtitle {
    margin: 8px 0 0;
    color: var(--muted);
    line-height: 1.4;
}

.desktop-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--text);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 10px 14px;
    border-radius: 999px;
}

.timer-card,
.fencer-card,
.footer-actions {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.24);
}

.timer-card {
    margin-bottom: 14px;
}

.timer {
    font-family: monospace;
    font-size: clamp(3rem, 18vw, 5rem);
    text-align: center;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 14px;
    padding: 14px 12px;
}

.timer-actions,
.score-actions,
.footer-actions {
    display: grid;
    gap: 10px;
}

.timer-actions {
    grid-template-columns: 1fr 1fr;
    margin-top: 12px;
}

.score-grid {
    display: grid;
    gap: 14px;
}

.fencer-card h2 {
    margin: 0 0 10px;
    font-size: 1.1rem;
}

.score {
    font-size: clamp(4rem, 18vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    text-align: center;
    margin: 4px 0 14px;
}

.score-actions {
    grid-template-columns: 1fr 1fr;
}

button {
    width: 100%;
    min-height: 52px;
    font-size: 1rem;
    font-weight: 700;
    border: 0;
    border-radius: 14px;
    color: white;
    background: linear-gradient(180deg, var(--accent-strong), var(--accent));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

button:active {
    transform: translateY(1px);
}

.danger {
    background: linear-gradient(180deg, #444, #222);
}

.footer-actions {
    margin-top: 14px;
}

@media (min-width: 720px) {
    .score-grid {
        grid-template-columns: 1fr 1fr;
    }
}