.speedtest-tool {
    --speed-good: #0a7f55;
    --speed-warn: #b76b00;
    --speed-bad: #c92a2a;
}

.speedtest-shell,
.speedtest-copy,
.speedtest-dashboard,
.speedtest-results,
.speedtest-history {
    display: grid;
    gap: 1rem;
}

.speedtest-shell select {
    width: 100%;
    min-height: 3.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font: inherit;
}

.speedtest-hero,
.speedtest-network,
.speedtest-gauge-card,
.speedtest-graph-card,
.speedtest-toggle,
.speedtest-advanced-inner,
.speedtest-results,
.speedtest-history,
.speedtest-score,
.speedtest-metric {
    border: 1px solid rgba(29, 29, 31, 0.08);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.74);
    box-shadow: var(--shadow-card);
}

.speedtest-hero {
    display: grid;
    gap: 1.2rem;
    padding: 1.1rem;
}

.speedtest-kicker {
    margin: 0;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
}

.speedtest-copy h2 {
    margin: 0;
    font-size: clamp(1.55rem, 6vw, 2.8rem);
    line-height: 1;
    letter-spacing: -0.04em;
}

.speedtest-copy p:not(.speedtest-kicker),
.speedtest-status,
.speedtest-card-head p,
.speedtest-verdict span,
.speedtest-toggle small,
.speedtest-explain,
.speedtest-history-list {
    margin: 0;
    color: var(--text-secondary);
}

.speedtest-start {
    width: 100%;
    min-height: 4.25rem;
    font-size: 1.2rem;
}

.speedtest-status {
    min-height: 1.5rem;
    padding: 0 0.2rem;
}

.speedtest-network {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    padding: 1rem;
}

.speedtest-network span,
.speedtest-metric span,
.speedtest-score span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.78rem;
}

.speedtest-network strong {
    display: block;
    overflow: hidden;
    margin-top: 0.2rem;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.95rem;
}

.speedtest-gauge-card,
.speedtest-graph-card,
.speedtest-results,
.speedtest-history {
    padding: 1rem;
}

.speedtest-gauge {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 13rem;
}

.speedtest-gauge canvas,
.speedtest-graph-card canvas {
    width: 100%;
    max-width: 100%;
    transform: translateZ(0);
}

.speedtest-gauge-readout {
    position: absolute;
    left: 50%;
    bottom: 1.15rem;
    display: grid;
    justify-items: center;
    transform: translateX(-50%);
}

.speedtest-gauge-readout strong {
    font-size: clamp(2.35rem, 12vw, 4.5rem);
    line-height: 0.92;
    letter-spacing: -0.04em;
}

.speedtest-gauge-readout span {
    color: var(--text-secondary);
    font-weight: 700;
}

.speedtest-verdict {
    display: grid;
    gap: 0.25rem;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(29, 29, 31, 0.08);
}

.speedtest-metrics,
.speedtest-score-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.speedtest-metric,
.speedtest-score {
    min-width: 0;
    padding: 0.9rem;
}

.speedtest-metric strong,
.speedtest-score strong {
    display: inline-block;
    margin-top: 0.2rem;
    font-size: clamp(1.65rem, 8vw, 2.55rem);
    line-height: 1;
    letter-spacing: -0.04em;
}

.speedtest-metric small,
.speedtest-score small {
    display: inline-block;
    margin-left: 0.2rem;
    color: var(--text-secondary);
    font-weight: 700;
}

.speedtest-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.9rem;
}

.speedtest-card-head h3,
.speedtest-result-columns h4 {
    margin: 0;
}

.speedtest-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.95rem 1rem;
    cursor: pointer;
}

.speedtest-toggle span:first-child {
    display: grid;
    gap: 0.2rem;
}

.speedtest-advanced-checkbox {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.speedtest-advanced-checkbox:focus-visible + .speedtest-toggle {
    outline: 2px solid rgba(0, 122, 255, 0.35);
    outline-offset: 3px;
}

.speedtest-switch {
    position: relative;
    width: 3.4rem;
    height: 2rem;
    flex: 0 0 auto;
    border-radius: 999px;
    background: rgba(120, 120, 128, 0.22);
    transition: background 0.22s ease;
}

.speedtest-switch span {
    position: absolute;
    top: 0.2rem;
    left: 0.2rem;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.18);
    transition: transform 0.22s ease;
}

.speedtest-advanced-checkbox:checked + .speedtest-toggle .speedtest-switch {
    background: var(--accent);
}

.speedtest-advanced-checkbox:checked + .speedtest-toggle .speedtest-switch span {
    transform: translateX(1.4rem);
}

.speedtest-advanced {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    visibility: hidden;
    transform: translateY(-6px);
    transition: max-height 0.3s ease, opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
}

.speedtest-advanced[aria-hidden="false"] {
    max-height: 80rem;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.speedtest-advanced-inner {
    display: grid;
    gap: 1rem;
    padding: 1rem;
}

.speedtest-check {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-height: 3.25rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(29, 29, 31, 0.08);
    font-weight: 700;
}

.speedtest-check input {
    width: 1.05rem;
    height: 1.05rem;
    margin: 0;
    accent-color: var(--accent);
}

.speedtest-result-columns {
    display: grid;
    gap: 1rem;
}

.speedtest-result-columns ul {
    display: grid;
    gap: 0.45rem;
    padding-left: 1.1rem;
    margin: 0.65rem 0 0;
    color: var(--text-secondary);
}

.speedtest-share {
    display: grid;
    gap: 0.75rem;
    margin-top: 0.2rem;
}

.speedtest-history-list {
    display: grid;
    gap: 0.6rem;
}

.speedtest-history-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.45rem 0.75rem;
    padding: 0.75rem 0;
    border-top: 1px solid rgba(29, 29, 31, 0.08);
}

.speedtest-history-row:first-child {
    border-top: 0;
}

.speedtest-history-row strong {
    color: var(--text-primary);
}

@media (min-width: 760px) {
    .speedtest-hero {
        grid-template-columns: minmax(0, 1fr) minmax(14rem, 0.34fr);
        align-items: center;
        padding: 1.25rem;
    }

    .speedtest-network {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .speedtest-dashboard {
        grid-template-columns: minmax(19rem, 0.9fr) minmax(0, 1.1fr);
        align-items: stretch;
    }

    .speedtest-metrics,
    .speedtest-score-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

    .speedtest-advanced-inner,
    .speedtest-result-columns,
    .speedtest-share {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (prefers-color-scheme: dark) {
    .speedtest-hero,
    .speedtest-network,
    .speedtest-gauge-card,
    .speedtest-graph-card,
    .speedtest-toggle,
    .speedtest-advanced-inner,
    .speedtest-results,
    .speedtest-history,
    .speedtest-score,
    .speedtest-metric,
    .speedtest-check {
        background: rgba(30, 32, 36, 0.78);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .speedtest-shell select {
        background: rgba(30, 32, 36, 0.9);
    }
}

@media (prefers-reduced-motion: reduce) {
    .speedtest-tool *,
    .speedtest-tool *::before,
    .speedtest-tool *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}