/**
 * Refresh Rate Test — app styles.
 * Design tokens only (main.css custom properties); no hardcoded colors.
 * Both themes work via tokens; no layout shift (fixed-height stat areas).
 */

.rrt-container {
    max-width: var(--app-container-max);
    margin: 0 auto;
}

.rrt-privacy {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-top: calc(var(--space-2) * -1);
}

.rrt:focus {
    outline: none;
}

/* ---------------- Controls ---------------- */

.rrt-controls {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.rrt-controls h2,
.rrt-results h2,
.rrt-device h2,
.rrt-related h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.rrt-rated {
    border: 0;
    padding: 0;
    margin: 0 0 var(--space-3);
}

.rrt-rated legend {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-2);
    padding: 0;
}

.rrt-rated-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.rrt-chip {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-alt);
    cursor: pointer;
    transition: background var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
    user-select: none;
}

.rrt-chip input {
    margin: 0 var(--space-2) 0 0;
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.rrt-chip:hover {
    border-color: var(--color-primary);
}

.rrt-chip:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-bg-card);
    box-shadow: 0 0 0 1px var(--color-primary) inset;
}

.rrt-chip input:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.rrt-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.rrt-actions .btn {
    min-height: 44px;
}

/* ---------------- Live readout ---------------- */

.rrt-results {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.rrt-hz-row {
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
    min-height: 64px;
    margin-bottom: var(--space-3);
}

.rrt-hz-value {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}

.rrt-raw {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.rrt-stats {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-2);
}

.rrt-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    min-height: 60px;
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-alt);
}

.rrt-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.rrt-stat-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

/* Screen-reader live region + small status line */
.rrt-sr-live {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ---------------- Banners & notes ---------------- */

.rrt-banner {
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
}

.rrt-banner-info {
    border-color: var(--color-primary);
}

.rrt-banner-equal {
    border-color: var(--color-success-text);
}

.rrt-banner-below,
.rrt-banner-suppressed {
    border-color: var(--color-warning-text);
}

.rrt-banner-above {
    border-color: var(--color-primary-text);
}

.rrt-verdict-text {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: 0;
}

.rrt-verdict-icon {
    font-size: var(--font-size-lg);
    line-height: 1;
}

.rrt-banner-equal .rrt-verdict-icon,
.rrt-banner-equal .rrt-verdict-text {
    color: var(--color-success-text);
}

.rrt-banner-below .rrt-verdict-icon,
.rrt-banner-below .rrt-verdict-text,
.rrt-banner-suppressed .rrt-verdict-text {
    color: var(--color-warning-text);
}

.rrt-banner-above .rrt-verdict-icon,
.rrt-banner-above .rrt-verdict-text {
    color: var(--color-primary-text);
}

.rrt-cause-intro {
    margin-bottom: var(--space-2);
}

.rrt-causes {
    margin: 0 0 0 var(--space-4);
    padding: 0;
    list-style-position: inside;
    counter-reset: none;
}

.rrt-causes li {
    margin-bottom: var(--space-2);
}

.rrt-causes li p {
    margin: var(--space-1) 0 0;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.rrt-cause-alt {
    margin-top: var(--space-1);
}

.rrt-cause-alt summary {
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-primary-text);
    padding: var(--space-1) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.rrt-cause-alt summary:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.rrt-note {
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-4);
    border: 1px solid var(--color-warning-text);
    color: var(--color-warning-text);
    background: var(--color-bg-card);
    font-size: var(--font-size-sm);
}

/* ---------------- Device context ---------------- */

.rrt-device {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
}

.rrt-device-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    list-style: none;
    margin: 0;
    padding: 0;
}

.rrt-device-list li {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.rrt-device-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.rrt-device-value {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* ---------------- Help panel (app-specific tweaks) ---------------- */

.rrt-help .help-steps,
.rrt-help .help-list {
    margin: 0;
    padding: 0 0 0 var(--space-4);
}

.rrt-help .help-steps li,
.rrt-help .help-list li {
    margin-bottom: var(--space-1);
}

/* ---------------- Related tools ---------------- */

.rrt-related {
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.rrt-related-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
}

.rrt-related-list a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-primary-text);
    transition: background var(--transition-fast),
        border-color var(--transition-fast);
}

.rrt-related-list a:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-alt);
}

.rrt-related-list a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ---------------- Responsive (<768px: stacked) ---------------- */

@media (max-width: 768px) {
    .rrt-hz-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-1);
    }

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

    .rrt-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .rrt-related-list {
        grid-template-columns: 1fr;
    }
}