/* ═══ YKS Chronometer page ═══ */

.chrono-page {
    padding-bottom: 3rem;
}

.chrono-page__intro {
    text-align: center;
    max-width: 640px;
    margin-inline: auto;
}

.chrono-page__intro .hero__lead {
    margin-inline: auto;
}

.chrono-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    align-items: start;
}

.chrono-panel {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 1.75rem;
    box-shadow: var(--shadow);
    transition: border-color .3s, box-shadow .3s;
}

.chrono-panel--running {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(3, 105, 161, .12);
}

.chrono-panel--warning {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(234, 88, 12, .15);
}

.chrono-panel--warning .chrono-display__time {
    color: var(--accent);
}

.chrono-panel--done {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, .15);
}

.chrono-panel--done .chrono-display__time {
    color: var(--success);
}

.chrono-panel__title {
    margin: 0 0 .35rem;
    font-family: var(--font-display);
    font-size: 1.35rem;
}

.chrono-panel__lead {
    margin: 0 0 1.5rem;
    font-size: .9rem;
    color: var(--text-muted);
}

.chrono-mode {
    display: inline-flex;
    gap: .35rem;
    padding: .25rem;
    background: var(--bg-muted);
    border-radius: 999px;
    margin-bottom: 1.75rem;
}

.chrono-mode__btn {
    padding: .5rem 1.15rem;
    border: none;
    border-radius: 999px;
    background: transparent;
    font: inherit;
    font-size: .875rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: background .15s, color .15s;
}

.chrono-mode__btn.is-active {
    background: var(--bg-elevated);
    color: var(--primary);
    box-shadow: var(--shadow);
}

.chrono-display {
    text-align: center;
    padding: 2rem 1rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(180deg, #f8fafc, var(--bg-elevated));
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.chrono-display__time {
    display: block;
    font-size: clamp(2.75rem, 10vw, 4.5rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -.03em;
    line-height: 1;
    color: var(--primary);
}

.chrono-display__hint {
    display: block;
    margin-top: .75rem;
    font-size: .875rem;
    color: var(--text-muted);
    font-weight: 600;
}

.chrono-presets {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .65rem;
    margin-bottom: 1.25rem;
}

.chrono-presets.is-hidden {
    display: none;
}

.chrono-preset {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .2rem;
    padding: .75rem .5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    font: inherit;
    cursor: pointer;
    transition: border-color .15s, background .15s;
}

.chrono-preset strong {
    font-size: .9rem;
    color: var(--primary);
}

.chrono-preset span {
    font-size: .7rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.2;
}

.chrono-preset:hover,
.chrono-preset.is-active {
    border-color: var(--primary-light);
    background: #f0f9ff;
}

.chrono-custom {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1.5rem;
}

.chrono-custom.is-hidden {
    display: none;
}

.chrono-custom label {
    font-size: .875rem;
    font-weight: 600;
    white-space: nowrap;
}

.chrono-custom input {
    width: 5rem;
    padding: .55rem .75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font: inherit;
    font-weight: 700;
    text-align: center;
}

.chrono-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
}

.chrono-actions .btn {
    flex: 1;
    min-width: 7rem;
    justify-content: center;
}

.chrono-aside {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chrono-tip {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.15rem 1.25rem;
}

.chrono-tip h3 {
    margin: 0 0 .65rem;
    font-size: .95rem;
    font-family: var(--font-display);
}

.chrono-tip ul {
    margin: 0;
    padding-left: 1.1rem;
    font-size: .85rem;
    color: var(--text-muted);
}

.chrono-tip li + li {
    margin-top: .35rem;
}

.chrono-links {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    padding: 1rem 1.25rem;
    background: var(--bg-muted);
    border-radius: var(--radius);
}

.chrono-links a {
    font-size: .875rem;
    font-weight: 600;
}

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

    .chrono-presets {
        grid-template-columns: repeat(2, 1fr);
    }

    .chrono-actions {
        flex-direction: column;
    }

    .chrono-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .chrono-presets {
        grid-template-columns: 1fr 1fr;
    }

    .chrono-panel {
        padding: 1.35rem 1.15rem;
    }
}