/* Hearing loss spectrum — diagnostic assessment page */

.hs-spectrum {
    position: relative;
    overflow: clip;
    background:
        radial-gradient(ellipse 70% 55% at 0% 100%, color-mix(in srgb, var(--brand-100) 65%, transparent), transparent 55%),
        radial-gradient(ellipse 50% 40% at 100% 0%, color-mix(in srgb, var(--accent-100) 45%, transparent), transparent 50%),
        linear-gradient(180deg, color-mix(in srgb, var(--brand-50) 70%, var(--surface)) 0%, var(--surface) 100%);
}

.hs-spectrum__inner {
    width: 100%;
    max-width: 56rem;
    margin-inline: auto;
}

.hs-spectrum__header {
    text-align: center;
    margin-block-end: var(--space-7, 2.5rem);
}

.hs-spectrum__eyebrow {
    margin: 0 0 var(--space-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold, 600);
    letter-spacing: 0.04em;
    color: var(--brand-600);
}

.hs-spectrum__title {
    margin: 0 0 var(--space-3);
    font-size: clamp(1.45rem, 3.1vw, 2.05rem);
    font-weight: var(--fw-black, 800);
    color: var(--brand-900);
    line-height: var(--lh-tight);
}

.hs-spectrum__lead {
    margin: 0 auto;
    max-width: 42rem;
    color: var(--text-muted);
    font-size: var(--fs-md);
    line-height: var(--lh-relaxed, 1.7);
}

.hs-spectrum__stage {
    display: grid;
    gap: var(--space-5);
}

.hs-spectrum__wave {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: clamp(0.2rem, 0.9vw, 0.45rem);
    height: clamp(4.5rem, 12vw, 6.5rem);
    padding: var(--space-4) var(--space-3);
    border-radius: var(--radius-lg, 1rem);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--brand-50) 80%, transparent), transparent),
        color-mix(in srgb, var(--surface) 88%, var(--brand-100));
    border: 1px solid color-mix(in srgb, var(--brand-200) 55%, var(--border));
    mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}

.hs-spectrum__bar {
    flex: 1 1 0;
    max-width: 0.85rem;
    height: var(--hs-bar-h, 50%);
    border-radius: 999px 999px 2px 2px;
    background: linear-gradient(
        180deg,
        var(--brand-400) 0%,
        var(--brand-700) 100%
    );
    transform-origin: bottom center;
    opacity: var(--hs-opacity, 1);
    filter: saturate(var(--hs-sat, 1));
    --hs-pulse-min: 0.28;
    animation: hs-bar-pulse var(--hs-dur, 1.15s) ease-in-out infinite;
    animation-delay: var(--hs-delay, 0s);
    transition:
        opacity 0.45s ease,
        filter 0.45s ease;
    will-change: transform;
}

.hs-spectrum__bar:nth-child(1) { --hs-delay: 0s; --hs-dur: 1.05s; }
.hs-spectrum__bar:nth-child(2) { --hs-delay: -0.12s; --hs-dur: 1.28s; }
.hs-spectrum__bar:nth-child(3) { --hs-delay: -0.28s; --hs-dur: 0.95s; }
.hs-spectrum__bar:nth-child(4) { --hs-delay: -0.4s; --hs-dur: 1.35s; }
.hs-spectrum__bar:nth-child(5) { --hs-delay: -0.08s; --hs-dur: 1.12s; }
.hs-spectrum__bar:nth-child(6) { --hs-delay: -0.52s; --hs-dur: 1.22s; }
.hs-spectrum__bar:nth-child(7) { --hs-delay: -0.18s; --hs-dur: 1.08s; }
.hs-spectrum__bar:nth-child(8) { --hs-delay: -0.64s; --hs-dur: 1.4s; }
.hs-spectrum__bar:nth-child(9) { --hs-delay: -0.33s; --hs-dur: 0.98s; }
.hs-spectrum__bar:nth-child(10) { --hs-delay: -0.2s; --hs-dur: 1.18s; }
.hs-spectrum__bar:nth-child(11) { --hs-delay: -0.46s; --hs-dur: 1.32s; }
.hs-spectrum__bar:nth-child(12) { --hs-delay: -0.05s; --hs-dur: 1.1s; }
.hs-spectrum__bar:nth-child(13) { --hs-delay: -0.58s; --hs-dur: 1.25s; }
.hs-spectrum__bar:nth-child(14) { --hs-delay: -0.24s; --hs-dur: 1.02s; }
.hs-spectrum__bar:nth-child(15) { --hs-delay: -0.7s; --hs-dur: 1.38s; }
.hs-spectrum__bar:nth-child(16) { --hs-delay: -0.14s; --hs-dur: 1.15s; }
.hs-spectrum__bar:nth-child(17) { --hs-delay: -0.36s; --hs-dur: 1.3s; }
.hs-spectrum__bar:nth-child(18) { --hs-delay: -0.5s; --hs-dur: 1.06s; }
.hs-spectrum__bar:nth-child(19) { --hs-delay: -0.09s; --hs-dur: 1.2s; }
.hs-spectrum__bar:nth-child(20) { --hs-delay: -0.42s; --hs-dur: 0.92s; }
.hs-spectrum__bar:nth-child(21) { --hs-delay: -0.61s; --hs-dur: 1.34s; }
.hs-spectrum__bar:nth-child(22) { --hs-delay: -0.22s; --hs-dur: 1.14s; }
.hs-spectrum__bar:nth-child(23) { --hs-delay: -0.48s; --hs-dur: 1.26s; }
.hs-spectrum__bar:nth-child(24) { --hs-delay: -0.16s; --hs-dur: 1.08s; }

@keyframes hs-bar-pulse {
    0%,
    100% {
        transform: scaleY(calc(var(--hs-scale, 1) * var(--hs-pulse-min, 0.28)));
    }
    50% {
        transform: scaleY(var(--hs-scale, 1));
    }
}

.hs-spectrum__wave[data-level="0"] .hs-spectrum__bar {
    --hs-scale: 1;
    --hs-opacity: 1;
    --hs-sat: 1;
    --hs-pulse-min: 0.42;
}

.hs-spectrum__wave[data-level="1"] .hs-spectrum__bar {
    --hs-scale: 0.82;
    --hs-opacity: 0.88;
    --hs-sat: 0.92;
    --hs-pulse-min: 0.34;
}

.hs-spectrum__wave[data-level="2"] .hs-spectrum__bar {
    --hs-scale: 0.58;
    --hs-opacity: 0.7;
    --hs-sat: 0.75;
    --hs-pulse-min: 0.26;
}

.hs-spectrum__wave[data-level="3"] .hs-spectrum__bar {
    --hs-scale: 0.34;
    --hs-opacity: 0.48;
    --hs-sat: 0.55;
    --hs-pulse-min: 0.18;
}

.hs-spectrum__wave[data-level="4"] .hs-spectrum__bar {
    --hs-scale: 0.12;
    --hs-opacity: 0.28;
    --hs-sat: 0.35;
    --hs-pulse-min: 0.08;
}

.hs-spectrum__wave[data-level="4"] .hs-spectrum__bar:nth-child(odd) {
    --hs-scale: 0.06;
    --hs-opacity: 0.16;
    --hs-pulse-min: 0.04;
}

.hs-spectrum__wave.is-paused .hs-spectrum__bar {
    animation-play-state: paused;
}

.hs-spectrum__hint {
    margin: 0;
    text-align: center;
    font-size: var(--fs-sm);
    color: var(--text-muted);
}

.hs-spectrum__tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--space-2);
    overflow-x: auto;
    padding-block-end: var(--space-1);
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.hs-spectrum__tab {
    flex: 1 0 auto;
    min-width: 4.75rem;
    scroll-snap-align: start;
    appearance: none;
    border: 1px solid color-mix(in srgb, var(--brand-300) 50%, var(--border));
    background: color-mix(in srgb, var(--surface) 92%, var(--brand-50));
    color: var(--brand-800);
    font: inherit;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold, 600);
    padding: 0.65rem 0.9rem;
    border-radius: var(--radius-md, 0.65rem);
    cursor: pointer;
    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease,
        box-shadow 0.2s ease;
}

.hs-spectrum__tab:hover {
    border-color: var(--brand-400);
    background: var(--brand-50);
}

.hs-spectrum__tab:focus-visible {
    outline: 2px solid var(--brand-500);
    outline-offset: 2px;
}

.hs-spectrum__tab.is-active {
    background: var(--brand-700);
    border-color: var(--brand-700);
    color: var(--text-on-brand);
    box-shadow: 0 8px 20px color-mix(in srgb, var(--brand-700) 22%, transparent);
}

.hs-spectrum__panel {
    display: grid;
    grid-template-columns: minmax(9rem, 0.85fr) minmax(0, 1.4fr);
    gap: var(--space-5);
    align-items: stretch;
    padding: var(--space-5);
    border-radius: var(--radius-lg, 1rem);
    background: var(--surface);
    border: 1px solid color-mix(in srgb, var(--brand-200) 40%, var(--border));
    box-shadow: 0 12px 36px color-mix(in srgb, var(--brand-900) 6%, transparent);
}

.hs-spectrum__stat {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-4);
    border-radius: var(--radius-md, 0.65rem);
    background:
        linear-gradient(160deg, color-mix(in srgb, var(--brand-50) 90%, #fff), #fff 70%);
    border-inline-start: 3px solid var(--brand-600);
}

.hs-spectrum__stat-label {
    margin: 0 0 var(--space-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold, 600);
    color: var(--brand-600);
}

.hs-spectrum__counter.stat-counter {
    text-align: center;
}

.hs-spectrum__counter .stat-counter__number {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: var(--fw-black, 800);
    color: var(--brand-800);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.hs-spectrum__stat-unit {
    margin: var(--space-2) 0 0;
    font-size: var(--fs-sm);
    color: var(--text-muted);
}

.hs-spectrum__copy {
    display: grid;
    gap: var(--space-4);
    align-content: center;
}

.hs-spectrum__everyday {
    margin: 0;
    color: var(--text);
    font-size: var(--fs-md);
    line-height: var(--lh-relaxed, 1.75);
}

.hs-spectrum__care {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md, 0.65rem);
    background: color-mix(in srgb, var(--brand-50) 75%, var(--surface));
    border: 1px solid color-mix(in srgb, var(--brand-200) 45%, transparent);
}

.hs-spectrum__care-label {
    margin: 0 0 var(--space-2);
    font-size: var(--fs-xs, 0.8rem);
    font-weight: var(--fw-bold, 700);
    letter-spacing: 0.03em;
    color: var(--brand-700);
}

.hs-spectrum__care-text {
    margin: 0;
    font-size: var(--fs-sm);
    color: var(--text);
    line-height: var(--lh-relaxed, 1.7);
}

.hs-spectrum__cta {
    display: flex;
    justify-content: center;
    padding-block-start: var(--space-2);
}

.hs-spectrum__source {
    margin: 0;
    text-align: center;
    font-size: var(--fs-xs, 0.8rem);
    line-height: var(--lh-relaxed, 1.7);
    color: var(--text-muted);
    max-width: 44rem;
    margin-inline: auto;
}

.hs-spectrum__source-label {
    font-weight: var(--fw-semibold, 600);
    color: var(--brand-700);
}

.hs-spectrum__source a {
    color: var(--brand-700);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.hs-spectrum__source a:hover {
    color: var(--brand-800);
}

.hs-spectrum__panel.is-updating {
    opacity: 0.72;
    transition: opacity 0.18s ease;
}

@media (max-width: 720px) {
    .hs-spectrum__panel {
        grid-template-columns: 1fr;
    }

    .hs-spectrum__stat {
        border-inline-start: none;
        border-block-start: 3px solid var(--brand-600);
    }

    .hs-spectrum__tab {
        flex: 0 0 auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hs-spectrum__bar {
        animation: none;
        transform: scaleY(var(--hs-scale, 1));
        will-change: auto;
    }

    .hs-spectrum__bar,
    .hs-spectrum__tab,
    .hs-spectrum__panel {
        transition: none;
    }
}