.theme-toggle {
    position: fixed;
    z-index: 1000;
    top: 18px;
    right: 18px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    padding: 9px 13px;
    color: #2e2035;
    background: rgba(255, 255, 255, .9);
    border: 1px solid rgba(181, 138, 58, .58);
    border-radius: 999px;
    box-shadow: 0 8px 28px rgba(46, 32, 53, .14);
    backdrop-filter: blur(12px);
    font: 700 .82rem/1 Inter, system-ui, sans-serif;
    cursor: pointer;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
    border-color: #b58a3a;
    outline: 3px solid rgba(181, 138, 58, .28);
    outline-offset: 2px;
}

.theme-toggle-icon {
    display: grid;
    place-items: center;
    width: 25px;
    height: 25px;
    color: #fff;
    background: #2e2035;
    border-radius: 50%;
    font-size: 1rem;
}

html[data-theme='dark'] {
    color-scheme: dark;
    background: #1d1421;
}

html[data-theme='dark'] body {
    color: #f4eff6;
    background-color: #1d1421;
    background-image:
        linear-gradient(rgba(29, 20, 33, .88), rgba(29, 20, 33, .94)),
        url('../images/clinic-atmosphere-bg-v1.webp');
}

html[data-theme='dark'] .theme-toggle {
    color: #f5edf7;
    background: rgba(57, 44, 64, .92);
    border-color: rgba(210, 170, 87, .68);
    box-shadow: 0 9px 30px rgba(0, 0, 0, .3);
}

html[data-theme='dark'] .theme-toggle-icon {
    color: #2e2035;
    background: linear-gradient(135deg, #f0d393, #b58a3a);
}

html[data-theme='dark'] .site-header,
html[data-theme='dark'] .privacy-header {
    filter: drop-shadow(0 8px 22px rgba(0, 0, 0, .25));
}

html[data-theme='dark'] .site-header a,
html[data-theme='dark'] .privacy-header a[aria-label] {
    display: inline-flex;
    padding: 7px 11px;
    background: rgba(255, 255, 255, .92);
    border: 1px solid rgba(210, 170, 87, .48);
    border-radius: 14px;
}

html[data-theme='dark'] .site-header a {
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
}

html[data-theme='dark'] .site-header img {
    filter: brightness(0) invert(1) drop-shadow(0 8px 18px rgba(0, 0, 0, .28));
}

html[data-theme='dark'] .processing-stage p { color: #ddd4e1; }
html[data-theme='dark'] .processing-loader { border-color: #55475c; border-top-color: #e5bd65; }

html[data-theme='dark'] .card,
html[data-theme='dark'] .video-section,
html[data-theme='dark'] .privacy-page {
    color: #f4eff6;
    background: linear-gradient(145deg, rgba(59, 46, 67, .98), rgba(43, 32, 49, .98));
    border-color: rgba(210, 170, 87, .38);
    box-shadow: 0 20px 65px rgba(0, 0, 0, .28);
}

html[data-theme='dark'] h1,
html[data-theme='dark'] h2,
html[data-theme='dark'] .result-screen > h2,
html[data-theme='dark'] .privacy-page h1,
html[data-theme='dark'] .privacy-page h2 {
    color: #fff;
}

html[data-theme='dark'] p,
html[data-theme='dark'] .hero-copy,
html[data-theme='dark'] .result-screen .result-intro,
html[data-theme='dark'] .result-screen .result-closing,
html[data-theme='dark'] .privacy-page p {
    color: #ddd4e1;
}

html[data-theme='dark'] .status,
html[data-theme='dark'] .quiz-progress-meta,
html[data-theme='dark'] .site-footer,
html[data-theme='dark'] .privacy-footer,
html[data-theme='dark'] .updated {
    color: #bdb1c3;
}

html[data-theme='dark'] .hero-benefits {
    color: #d3c8d7;
}

html[data-theme='dark'] .option-card {
    color: #f7f2f8;
    background: linear-gradient(145deg, #4b3d52, #392e40);
    border-color: #65566e;
    box-shadow: 0 9px 28px rgba(0, 0, 0, .18);
}

html[data-theme='dark'] .option-card:hover,
html[data-theme='dark'] .option-card:focus-visible {
    border-color: #d2aa57;
    background: linear-gradient(145deg, #584760, #413448);
}

html[data-theme='dark'] .quiz-progress-track {
    background: #594b60;
}

html[data-theme='dark'] .capture input:not([type='checkbox']) {
    color: #fff;
    background: #2a202f;
    border-color: #716477;
}

html[data-theme='dark'] .capture input::placeholder {
    color: #ad9fb4;
}

html[data-theme='dark'] .privacy-notice,
html[data-theme='dark'] .capture small,
html[data-theme='dark'] .optional {
    color: #bfb3c5;
}

html[data-theme='dark'] .result-area {
    color: #f3edf5;
    background: #392e40;
    border-color: #5f5067;
}

html[data-theme='dark'] .result-area-name,
html[data-theme='dark'] .result-confidence {
    color: #c4b8ca;
}

html[data-theme='dark'] .result-confidence {
    border-color: #594b60;
}

html[data-theme='dark'] .result-notice {
    color: #ffe9b8;
    background: #514023;
}

html[data-theme='dark'] .secondary {
    color: #f4eff6;
    background: #403448;
    border-color: #756a7b;
}

html[data-theme='dark'] .site-footer a,
html[data-theme='dark'] .privacy-footer a,
html[data-theme='dark'] .privacy-page a {
    color: #e4c477;
}

html[data-theme='dark'] .back-link {
    color: #f0d393;
    background: #46384e;
}

html[data-theme='dark'] .primary {
    color: #271b2d;
    background: linear-gradient(135deg, #f2d797, #c99b43);
    border: 1px solid #f4dda7;
    border-bottom: 4px solid #8c651b;
    box-shadow: 0 13px 30px rgba(0, 0, 0, .26);
    font-weight: 900;
}

html[data-theme='dark'] .primary:hover,
html[data-theme='dark'] .primary:focus-visible {
    color: #1f1424;
    background: linear-gradient(135deg, #f8e5b7, #d8aa50);
    transform: translateY(-2px);
}

html[data-theme='dark'] .option-label {
    color: #fff;
    font-weight: 850;
}

html[data-theme='dark'] .option-marker {
    color: #3a2810;
    background: linear-gradient(135deg, #f5e4b7, #d4ad5e);
    border-color: #f0d393;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
}

html[data-theme='dark'] .option-card::after {
    color: #d9bd7a;
}

html[data-theme='dark'] .option-card:hover,
html[data-theme='dark'] .option-card:focus-visible {
    color: #fff;
    background: linear-gradient(145deg, #65526f, #493951);
    border-color: #e0bd6e;
    box-shadow: 0 14px 32px rgba(0, 0, 0, .3), 0 0 0 1px rgba(224, 189, 110, .24);
}

html[data-theme='dark'] .option-card.selected,
html[data-theme='dark'] .option-card.selected:disabled {
    background: linear-gradient(135deg, #725b7d, #4b3854);
    border: 2px solid #e5c77f;
    box-shadow: 0 15px 36px rgba(0, 0, 0, .34), 0 0 0 3px rgba(229, 199, 127, .16);
}

html[data-theme='dark'] .status,
html[data-theme='dark'] .quiz-progress-meta {
    color: #e3cf9e;
    font-weight: 800;
}

html[data-theme='dark'] .hero-copy {
    color: #f0e9f2;
    font-weight: 500;
}

html[data-theme='dark'] .hero-benefits {
    color: #f5eff7;
    font-weight: 800;
}

html[data-theme='dark'] .result-screen > .status {
    color: #f5dda4;
    background: #594521;
    border-color: #d2aa57;
    box-shadow: 0 7px 20px rgba(0, 0, 0, .2);
}

html[data-theme='dark'] .result-screen .result-intro {
    color: #f4eef6;
    background: linear-gradient(100deg, #493a51, #392d40);
    border-left-color: #d2aa57;
    box-shadow: 0 10px 28px rgba(0, 0, 0, .16);
}

html[data-theme='dark'] .result-screen .result-area {
    background: linear-gradient(145deg, #493a51, #302637);
    border-top-color: #66556f;
    border-right-color: #66556f;
    border-bottom-color: #66556f;
    box-shadow: 0 16px 38px rgba(0, 0, 0, .24);
}

html[data-theme='dark'] .result-screen .result-area-name {
    color: #f4d995;
    background: #5a4727;
    border: 1px solid rgba(229, 199, 127, .45);
}

html[data-theme='dark'] .result-screen .result-area h3 {
    color: #fff;
}

html[data-theme='dark'] .result-screen .result-confidence {
    color: #e4d9e8;
    background: rgba(29, 20, 33, .24);
    border-top-color: #6c5b74;
    border-radius: 10px;
}

html[data-theme='dark'] .result-screen .result-notice {
    color: #ffeab8;
    background: linear-gradient(100deg, #5b4824, #44371f);
    border-color: #a77b27;
    border-left-color: #e0b95f;
}

html[data-theme='dark'] .result-screen .result-closing {
    color: #f4eef6;
    background: linear-gradient(145deg, #493b51, #362b3d);
    border-color: #695970;
    box-shadow: 0 10px 28px rgba(0, 0, 0, .18);
}

@media (max-width: 640px) {
    .theme-toggle {
        top: 12px;
        right: 12px;
        padding: 7px;
    }

    .theme-toggle-label {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
    }
}