.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(26, 32, 53, 0.08);
}

.site-header-inner,
.site-footer-inner {
    width: min(1100px, calc(100% - 2rem));
    margin: 0 auto;
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0;
}

.site-brand {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.site-title {
    margin: 0;
    color: #1a2035;
    font-size: clamp(1.2rem, 1rem + 1vw, 1.8rem);
    line-height: 1.1;
}

.site-subtitle {
    margin: 0;
    color: #5b6478;
    font-size: 0.92rem;
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid #d7e3f4;
    background: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.app {
    max-width: 900px;
    margin: 0 auto;
}

.hero {
    margin-bottom: 24px;
    padding: 1.25rem 0 0.25rem;
}

.hero h2 {
    margin: 0 0 8px;
    color: #1a56a0;
}

.hero p {
    margin: 0;
    color: #4b5563;
}

.disclaimer-banner {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 12px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e3a8a;
    font-size: 0.92rem;
    line-height: 1.5;
    display: none;
}

.site-footer {
    margin-top: 2rem;
    border-top: 1px solid rgba(26, 32, 53, 0.08);
    background: #ffffff;
}

.site-footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1rem 0 2rem;
}

.site-footer-text,
.site-footer-note {
    margin: 0;
    font-size: 0.88rem;
    color: #5b6478;
}

/* ========== THEME VARIABLES ========== */
:root,
[data-theme="light"] {
    /* Surfaces - warm neutral palette */
    --color-bg: #f8f9fa;
    --color-surface: #ffffff;
    --color-surface-2: #f1f3f5;
    --color-surface-3: #e9ecef;
    --color-mode-switch-bg: #ffffff;
    --color-card-bg: #ffffff;

    /* Text - refined hierarchy for readability */
    --color-text: #1f2937;
    --color-text-strong: #111827;
    --color-text-muted: #5f6b7a;
    --color-text-soft: #6b7280;

    /* Borders - subtle but visible */
    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-strong: #dee2e6;

    /* Primary - professional blue (medical UI standard) */
    --color-primary: #0066cc;
    --color-primary-soft: #e7f2ff;
    --color-primary-hover: #0052a3;
    --color-primary-active: #003d7a;

    /* Success - clinical green */
    --color-success: #2f7c31;
    --color-success-soft: #e8f5e9;
    --color-success-strong: #1b5e20;

    /* Warning - amber (not too bright) */
    --color-warning: #e67700;
    --color-warning-soft: #fff3e0;
    --color-warning-strong: #c56000;

    /* Danger - clinical red */
    --color-danger: #d32f2f;
    --color-danger-soft: #ffebee;
    --color-danger-strong: #b71c1c;
}

[data-theme="dark"] {
    /* Surfaces - true dark with good layering */
    --color-bg: #0d1117;
    --color-surface: #161b22;
    --color-surface-2: #21262d;
    --color-surface-3: #2d333b;
    --color-mode-switch-bg: #161b22;
    --color-card-bg: #161b22;

    /* Text - WCAG AAA compliant on dark */
    --color-text: #e6edf3;
    --color-text-strong: #ffffff;
    --color-text-muted: #adbac7;
    --color-text-soft: #768390;

    /* Borders - visible but not harsh */
    --color-border: rgba(255, 255, 255, 0.13);
    --color-border-strong: rgba(255, 255, 255, 0.22);

    /* Primary - lighter blue for dark backgrounds */
    --color-primary: #539bf5;
    --color-primary-soft: rgba(83, 155, 245, 0.15);
    --color-primary-hover: #6cb6ff;
    --color-primary-active: #409eff;

    /* Success - soft green that works on dark */
    --color-success: #7ee787;
    --color-success-soft: rgba(126, 231, 135, 0.15);
    --color-success-strong: #57d364;

    /* Warning - warm amber for dark mode */
    --color-warning: #f0b647;
    --color-warning-soft: rgba(240, 182, 71, 0.15);
    --color-warning-strong: #e09f3e;

    /* Danger - salmon red (less harsh than pure red) */
    --color-danger: #ff7b72;
    --color-danger-soft: rgba(255, 123, 114, 0.15);
    --color-danger-strong: #ff9492;
}

/* Style the whole page */
body {
    font-family: Arial, sans-serif;
    background-color: var(--color-bg);
    margin: 0;
    padding: 24px;
    color: var(--color-text);
}

/* Main app container */
.app {
    max-width: 700px;
    margin: 0 auto;
}

/* Top title area */
.hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 24px;
}

.hero-copy {
    min-width: 0;
    flex: 1;
}

.hero h1 {
    margin: 0 0 8px;
    color: var(--color-primary);
}

.hero p {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.theme-toggle {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
    transition:
        background-color 0.18s ease,
        color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease,
        box-shadow 0.18s ease;
}

.theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}

.theme-toggle:active {
    transform: translateY(0);
}

@media (max-width: 640px) {
    .hero {
        flex-direction: column;
        align-items: stretch;
    }

    .theme-toggle {
        align-self: flex-end;
    }
}

/* Mode Switch */
.mode-switch {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    margin-bottom: 20px;
    padding: 0.35rem;
    background: var(--color-mode-switch-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.mode-option {
    position: relative;
    margin: 0;
}

.mode-option input[type="radio"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.mode-option span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.8rem 1rem;
    border-radius: 12px;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid transparent;
    transition:
        background-color 0.2s ease,
        color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.18s ease;
    cursor: pointer;
}

.mode-option input[type="radio"]:checked + span {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border-color: var(--color-border);
    box-shadow: inset 0 0 0 1px var(--color-border);
}

.mode-option:nth-child(2) input[type="radio"]:checked + span {
    background: #fdf0f7;
    color: #9d2f6f;
    border-color: rgba(184, 50, 128, 0.16);
}

.mode-option input[type="radio"]:focus-visible + span {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

@media (max-width: 640px) {
    .mode-switch {
        grid-template-columns: 1fr;
    }
}

.calculator-layout {
    margin-bottom: 20px;
}

.calculator-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.calculator-card-copy {
    min-width: 0;
    flex: 1;
}

.calculator-paper-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.58rem 0.9rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
    color: var(--color-primary);
    background: var(--color-primary-soft);
    border: 1px solid var(--color-border);
    transition:
        background-color 0.18s ease,
        border-color 0.18s ease,
        color 0.18s ease,
        transform 0.18s ease;
}

.calculator-paper-link:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-strong);
    transform: translateY(-1px);
}

.calculator-paper-link:active {
    transform: translateY(0);
}

.current-calculator-card.posterior-mode .calculator-paper-link {
    color: #9d2f6f;
    background: #fdf0f7;
    border-color: rgba(184, 50, 128, 0.16);
}

.current-calculator-card.posterior-mode .calculator-paper-link:hover {
    background: #fae2f0;
    border-color: rgba(184, 50, 128, 0.28);
    color: #84245d;
}

@media (max-width: 640px) {
    .calculator-card-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .calculator-paper-link {
        width: 100%;
    }
}

/* ========== CARD STYLING ========== */
.card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 18px;
    padding: 1rem;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
    margin-bottom: 20px;
}

.card h2 {
    margin: 0 0 0.55rem;
    font-size: 1.05rem;
    line-height: 1.25;
    color: var(--color-text-strong);
}

.card p {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.mode-vars {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.mode-vars > .card {
    margin-bottom: 0;
}

@media (min-width: 900px) {
    .mode-vars {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Calculator heading */
.current-calculator-card {
    margin: 12px 0;
    padding: 1rem 1.1rem;
    border: 1px solid var(--color-border-strong);
    border-left: 5px solid var(--color-primary);
    border-radius: 12px;
    background: var(--color-surface-2);
    transition:
        background-color 0.2s ease,
        border-color 0.2s ease;
}

.current-calculator-card h2 {
    margin: 0 0 6px;
    font-size: 1.1rem;
    color: var(--color-text-strong);
}

.current-calculator-card p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.current-calculator-card.anterior-mode {
    background: var(--color-surface-2);
    border-left-color: var(--color-primary);
}

.current-calculator-card.posterior-mode {
    background: #fff7f7;
    border-left-color: #b83280;
}

[data-theme="dark"] .current-calculator-card.posterior-mode {
    background: rgba(184, 50, 128, 0.12);
    border-left-color: #e879c0;
}

/* Add a little space between checkbox and text */
input[type="checkbox"] {
    margin-right: 8px;
}

/* ========== RESULT CARD ========== */
.result-card {
    margin-top: 1.25rem;
    padding: 1.35rem;
    border: 1px solid var(--color-border);
    border-left: 5px solid var(--color-primary);
    border-radius: 18px;
    background: var(--color-surface);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
    transition:
        background-color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.result-card h2 {
    margin: 0 0 0.85rem;
    font-size: 1.1rem;
    color: var(--color-text-strong);
}

.result-mode-label {
    display: inline-block;
    margin-bottom: 0.5rem;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-soft);
}

.result-card .result-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.95rem;
    margin: 1rem 0 1.05rem;
}

.result-card .metric-block {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 1rem 1rem 0.95rem;
    min-height: 108px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.38rem;
    text-align: center;
}

.result-card .metric-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-text-soft);
    line-height: 1.35;
    margin-bottom: 0;
    text-align: center;
}

.result-card .metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    color: var(--color-text-strong);
    text-align: center;
}

.result-card .probability-value {
    color: var(--color-primary);
}

.result-card .result-summary {
    border-top: 1px solid var(--color-border);
    padding-top: 0.95rem;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.result-card .result-summary p {
    margin: 0;
}

.result-card .risk-tier-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.result-card .risk-tier-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.result-card #risk-tier {
    font-weight: 700;
    color: var(--color-primary);
}

.result-card .risk-tier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 96px;
    padding: 0.4rem 0.82rem;
    border-radius: 999px;
    font-size: 0.84rem;
    font-weight: 800;
    line-height: 1;
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.result-card #risk-text {
    margin: 0;
    font-size: 0.96rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.result-card .bayes-formula-note {
    margin: 0;
    font-size: 0.84rem;
    color: var(--color-text-soft);
    line-height: 1.45;
}

/* ========== CUTOFF-BASED RESULT STATES ========== */
.result-card.score-positive {
    border-color: var(--color-warning);
    background: var(--color-warning-soft);
    border-left-color: var(--color-warning);
}

.result-card.score-positive .metric-block {
    background: var(--color-surface-2);
    border-color: var(--color-border);
}

.result-card.score-positive .risk-tier-badge {
    background: var(--color-warning-soft);
    color: var(--color-warning);
}

.result-card.score-negative {
    border-color: var(--color-success);
    background: var(--color-success-soft);
    border-left-color: var(--color-success);
}

.result-card.score-negative .metric-block {
    background: var(--color-surface-2);
    border-color: var(--color-border);
}

.result-card.score-negative .risk-tier-badge {
    background: var(--color-success-soft);
    color: var(--color-success);
}

@media (max-width: 640px) {
    .result-card .result-metrics {
        grid-template-columns: 1fr;
    }

    .result-card .metric-block {
        min-height: 92px;
    }

    .result-card .metric-value {
        font-size: 1.75rem;
    }

    .result-card .risk-tier-line {
        flex-direction: column;
        align-items: flex-start;
    }
}

.hidden {
    display: none;
}

/* ========== MODAL OVERLAY ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(15, 20, 32, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.18s ease;
}

.modal-overlay[hidden] {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 520px;
    max-height: 88vh;
    overflow-y: auto;
    animation: slideUp 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    background: var(--color-surface);
    z-index: 1;
}

.modal-header-left {
    min-width: 0;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-strong);
    margin: 0;
    line-height: 1.2;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: 0.5rem;
    color: var(--color-text-muted);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-text-strong);
    border-color: var(--color-border-strong);
}

.modal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ========== BREAKDOWN MODAL SPECIFIC ========== */
.breakdown-summary-card {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1rem;
}

.breakdown-summary-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-soft);
    margin-bottom: 0.7rem;
}

.breakdown-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.breakdown-summary-tile {
    background: var(--color-surface-3);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.85rem 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    min-height: 82px;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.breakdown-summary-tile-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-soft);
    line-height: 1.3;
    text-align: center;
}

.breakdown-summary-tile-value {
    font-size: 1.65rem;
    font-weight: 800;
    line-height: 1;
    color: var(--color-text-strong);
    text-align: center;
}

.breakdown-probability-value {
    color: var(--color-primary);
}

.breakdown-tier-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
}

.breakdown-tier-row-label {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.breakdown-tier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 86px;
    padding: 0.36rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    line-height: 1;
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.breakdown-modal-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.breakdown-empty {
    font-size: 0.875rem;
    color: var(--color-text-soft);
    font-style: italic;
    text-align: center;
    padding: 1rem;
}

.breakdown-modal-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface-2);
}

.breakdown-modal-name {
    font-size: 0.875rem;
    color: var(--color-text);
    line-height: 1.4;
    flex: 1;
}

.breakdown-modal-points {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-primary);
    white-space: nowrap;
}

.breakdown-modal-actions {
    display: flex;
    justify-content: flex-end;
}

/* ========== MOBILE MODAL ========== */
@media (max-width: 600px) {
    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .modal-box {
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        max-height: 92vh;
    }

    .breakdown-summary-grid {
        grid-template-columns: 1fr;
    }

    .breakdown-summary-tile {
        min-height: 72px;
    }
}

/* ========== CHECK ROW ========== */
/* ---------- Better checkbox design ---------- */
.check-row {
    display: grid;
    grid-template-columns: 28px 1fr auto auto;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    min-height: 52px;
    padding: 0.75rem 0.1rem;
    border-radius: 12px;
    transition: background-color 0.18s ease;
}

.check-row:hover {
    background: var(--color-surface-2);
}

.check-row-main {
    display: contents;
    cursor: pointer;
}

.card .check-row + .check-row,
.card label.check-row + label.check-row {
    border-top: 1px solid var(--color-border);
}

.check-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin: 0;
    accent-color: var(--color-primary);
    cursor: pointer;
    justify-self: center;
}

.check-label-text {
    display: block;
    line-height: 1.45;
    color: var(--color-text);
    font-size: 0.96rem;
    font-weight: 500;
}

.score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    min-height: 30px;
    padding: 0.2rem 0.58rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    white-space: nowrap;
    border: 1px solid transparent;
}

.score-positive {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border-color: color-mix(in srgb, var(--color-primary) 18%, transparent);
}

.score-negative {
    background: var(--color-danger-soft);
    color: var(--color-danger);
    border-color: color-mix(in srgb, var(--color-danger) 18%, transparent);
}

.breakdown-summary-mode {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-strong);
}

.inputs-panel {
    display: grid;
    gap: 0.4rem;
}
.score-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

@media (max-width: 640px) {
    .card {
        padding: 1rem;
        border-radius: 14px;
    }

    #score-value {
        font-size: 1.75rem;
    }

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

    .score-actions button {
        width: 100%;
    }
}

/* ========== BUTTONS ========== */
button {
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.65rem 1.1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Primary button */
button,
.primary-btn {
    background: #1a56a0;
    color: white;
    box-shadow: 0 1px 3px rgba(26, 86, 160, 0.12);
}

button:hover,
.primary-btn:hover {
    background: #15467f;
    box-shadow: 0 4px 12px rgba(26, 86, 160, 0.2);
    transform: translateY(-1px);
}

button:active,
.primary-btn:active {
    background: #0f3558;
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(26, 86, 160, 0.15);
}

[data-theme="dark"] button,
[data-theme="dark"] .primary-btn {
    background: #7fb3ff;
    color: #111827;
}

[data-theme="dark"] button:hover,
[data-theme="dark"] .primary-btn:hover {
    background: #5fa3ff;
}

[data-theme="dark"] button:active,
[data-theme="dark"] .primary-btn:active {
    background: #4a93ef;
}

/* Secondary button */
.secondary-btn {
    background: var(--color-surface-2);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.secondary-btn:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-strong);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
    transform: translateY(-1px);
}

.secondary-btn:active {
    background: var(--color-surface-2);
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

/* Disabled state */
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

button:disabled:hover {
    box-shadow: none;
}

.prevalence-card {
    margin: 0 0 1rem;
}

.prevalence-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.prevalence-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.75rem;
    color: var(--color-text-muted);
}

.result-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
    margin: 1rem 0;
}

.metric-block {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 0.9rem 1rem;
}

.metric-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-soft);
    margin-bottom: 0.35rem;
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-strong);
}

.probability-value {
    color: var(--color-primary);
}

.bayes-formula-note {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

@media (max-width: 640px) {
    .result-metrics {
        grid-template-columns: 1fr;
    }
}

/* ---------- Definition banner / expandable card ---------- */
.imaging-defs-card {
    padding: 0;
    overflow: hidden;
    border-radius: 18px;
    border: 1px solid var(--color-border);
    background: linear-gradient(
        180deg,
        var(--color-surface) 0%,
        var(--color-surface-2) 100%
    );
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.imaging-defs-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    text-align: left;
    padding: 1.1rem 1.15rem;
    background: transparent;
    border: none;
    cursor: pointer;
    min-height: 64px;
}

.imaging-defs-toggle:hover {
    background: var(--color-primary-soft);
}

.imaging-defs-toggle-copy {
    flex: 1;
    min-width: 0;
}

.imaging-defs-label {
    margin: 0 0 0.32rem;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.imaging-defs-toggle h3 {
    margin: 0 0 0.28rem;
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--color-text-strong);
    line-height: 1.25;
}

.imaging-defs-subtitle {
    margin: 0;
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    max-width: 58ch;
}

.imaging-defs-chevron {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 1rem;
    transition:
        transform 0.2s ease,
        background-color 0.18s ease,
        color 0.18s ease;
}

.imaging-defs-card.open .imaging-defs-chevron {
    transform: rotate(180deg);
}

.imaging-defs-body {
    padding: 0 1.15rem 1.15rem;
    border-top: 1px solid var(--color-border);
}

.imaging-defs-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.imaging-def-card {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.imaging-def-card-image {
    min-height: 220px;
    background: var(--color-surface-3);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0.75rem;
}

.imaging-def-card-image img {
    max-width: 100%;
    max-height: 205px;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.imaging-def-card-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.imaging-def-card-title {
    margin: 0;
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--color-text-strong);
    line-height: 1.3;
}

.imaging-def-card-text {
    margin: 0;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

.imaging-def-card-caption {
    margin: 0.1rem 0 0;
    font-size: 0.78rem;
    color: var(--color-text-soft);
    line-height: 1.4;
}

/* Multi-image gallery for reference cards */
.imaging-def-card-gallery {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--color-surface-3);
}

.imaging-def-card-gallery.single {
    grid-template-columns: 1fr;
}

.imaging-def-card-gallery.multi {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.imaging-def-card-gallery .imaging-def-card-image {
    aspect-ratio: 1;
    min-height: 140px;
    padding: 0.5rem;
}

.imaging-def-card-gallery .imaging-def-card-image img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

@media (max-width: 640px) {
    .imaging-def-card-gallery.multi {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .imaging-def-card-gallery .imaging-def-card-image {
        min-height: 120px;
    }
}

/* Modal figure styling for multiple images */
.definition-modal-figure {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.definition-modal-figure + .definition-modal-figure {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.definition-modal-figure img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 12px;
}

.definition-modal-caption {
    margin: 0;
    font-size: 0.8rem;
    color: var(--color-text-soft);
    line-height: 1.45;
}

.info-btn {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition:
        background-color 0.18s ease,
        color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease;
    padding: 0;
}

.info-btn:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* ---------- Dark mode fix for definition banner readability ---------- */
[data-theme="dark"] .imaging-defs-card {
    background: #141a22;
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.42);
}

[data-theme="dark"] .imaging-defs-toggle {
    background: transparent;
}

[data-theme="dark"] .imaging-defs-toggle:hover {
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .imaging-defs-label {
    color: #9ecbff;
    font-weight: 800;
}

[data-theme="dark"] .imaging-defs-toggle h3 {
    color: #ffffff;
    font-weight: 800;
}

[data-theme="dark"] .imaging-defs-subtitle {
    color: #edf2f7;
}

[data-theme="dark"] .imaging-defs-chevron {
    background: rgba(83, 155, 245, 0.18);
    color: #9ecbff;
}

[data-theme="dark"] .imaging-defs-chevron {
    background: rgba(83, 155, 245, 0.16);
    color: #8fc2ff;
}

[data-theme="dark"] .imaging-defs-body {
    border-top-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .imaging-def-card {
    background: #1c2430;
    border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .imaging-def-card-image {
    background: #27313d;
}

[data-theme="dark"] .imaging-def-card-title {
    color: #f4f7fb;
}

[data-theme="dark"] .imaging-def-card-text {
    color: #d4dde7;
}

[data-theme="dark"] .imaging-def-card-caption {
    color: #aebdcb;
}

[data-theme="dark"] .info-btn {
    background: rgba(83, 155, 245, 0.16);
    color: #8fc2ff;
    border-color: rgba(143, 194, 255, 0.22);
}

[data-theme="dark"] .info-btn:hover {
    background: #539bf5;
    color: #0d1117;
    border-color: #539bf5;
}

/* ---------- Dark mode posterior (pink) mode refinements ---------- */
[data-theme="dark"]
    .mode-option:nth-child(2)
    input[type="radio"]:checked
    + span {
    background: rgba(232, 121, 192, 0.16);
    color: #f0a8d8;
    border-color: rgba(232, 121, 192, 0.22);
}

[data-theme="dark"] .current-calculator-card.posterior-mode {
    background: rgba(232, 121, 192, 0.12);
    border-left-color: #e879c0;
}

[data-theme="dark"] .current-calculator-card.posterior-mode h2 {
    color: #f4f7fb;
}

[data-theme="dark"] .current-calculator-card.posterior-mode p {
    color: #d4dde7;
}

[data-theme="dark"]
    .current-calculator-card.posterior-mode
    .calculator-paper-link {
    color: #f0a8d8;
    background: rgba(232, 121, 192, 0.16);
    border-color: rgba(232, 121, 192, 0.22);
}

[data-theme="dark"]
    .current-calculator-card.posterior-mode
    .calculator-paper-link:hover {
    background: rgba(232, 121, 192, 0.24);
    border-color: rgba(232, 121, 192, 0.35);
    color: #f9d4eb;
}

/* ---------- Dark mode shadow adjustments ---------- */
[data-theme="dark"] .card {
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .theme-toggle {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .theme-toggle:hover {
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .mode-switch {
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .result-card {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .secondary-btn {
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .secondary-btn:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.definition-modal-label {
    margin: 0 0 0.3rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-soft);
}

.definition-modal-text {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.65;
}

.definition-placeholder {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--color-text-soft);
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .imaging-defs-grid {
        grid-template-columns: 1fr;
    }

    .imaging-defs-toggle {
        padding: 1rem;
        min-height: 60px;
    }

    .check-row {
        grid-template-columns: 28px 1fr;
        gap: 0.75rem;
        align-items: start;
    }

    .check-row .score-badge {
        grid-column: 2;
        justify-self: start;
        margin-top: 0.2rem;
    }
}

.definition-modal-image-wrap {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.definition-modal-figure {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.definition-modal-figure + .definition-modal-figure {
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.definition-modal-figure img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    border-radius: 12px;
    background: var(--color-surface-3);
}

.definition-modal-text {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--color-text);
}

/* ========== INFO MODAL IMAGE/CAPTION FIX ========== */
.definition-modal-image-wrap {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: transparent;
    border: none;
    min-height: auto;
    padding: 0;
}

.definition-modal-figure {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    background: transparent;
    border: none;
    padding: 0;
}

.definition-modal-figure + .definition-modal-figure {
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.definition-modal-figure img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    border-radius: 12px;
    background: var(--color-surface-3);
    border: 1px solid var(--color-border);
    padding: 0.5rem;
}

.definition-modal-figure .definition-modal-caption {
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

.definition-modal-text {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--color-text);
}

.imaging-def-card {
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.imaging-def-card-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    flex: 1;
}

.imaging-def-card-title {
    margin: 0;
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--color-text-strong);
    line-height: 1.3;
}

.imaging-def-card-text {
    margin-top: auto;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}
.imaging-def-card.text-only {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.imaging-def-card.text-only .imaging-def-card-body {
    padding: 1rem;
}

.imaging-def-card.text-only .imaging-def-card-text {
    margin-top: 0;
    font-size: 0.9rem;
    color: var(--color-text);
}

.imaging-def-card.text-only {
    grid-column: 1 / -1;
}

.imaging-def-card.text-only .imaging-def-card-text {
    max-width: none;
    width: 100%;
    margin-top: 0;
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.6;
}
.imaging-def-card-image {
    cursor: zoom-in;
}

.imaging-def-card-image:hover {
    opacity: 0.96;
}

.help-dialog {
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-text, #1a2035);
    max-width: min(440px, calc(100vw - 2rem));
    width: 100%;
}

.help-dialog[open] {
    display: grid;
    place-items: center;
}

.help-dialog::backdrop {
    background: rgba(15, 20, 32, 0.5);
    backdrop-filter: blur(4px);
}

.help-dialog-box {
    width: 100%;
    background: var(--color-surface, #ffffff);
    border: 1px solid var(--color-border, rgba(26, 32, 53, 0.12));
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.2);
    overflow: hidden;
}

.help-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1rem 0.85rem;
    border-bottom: 1px solid var(--color-divider, rgba(26, 32, 53, 0.08));
    background: var(--color-surface, #ffffff);
}

.help-dialog-title {
    margin: 0;
    font-size: 1rem;
    line-height: 1.25;
    color: var(--color-text, #1a2035);
}

.help-dialog-close {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--color-border, #cbd5e1);
    background: var(--color-surface-2, #f8fafc);
    color: var(--color-text, #334155);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
}

.help-dialog-close:hover {
    background: var(--color-surface-offset, #e2e8f0);
}

.help-dialog-body {
    padding: 1rem;
    background: var(--color-surface, #ffffff);
}

.help-dialog-text,
.help-dialog-note {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--color-text-muted, #5b6478);
}

.help-dialog-subtitle {
    margin: 1rem 0 0.5rem;
    font-size: 0.88rem;
    color: var(--color-text, #1a2035);
}

.help-dialog-list {
    margin: 0 0 0.9rem 1rem;
    padding: 0;
    color: var(--color-text-muted, #5b6478);
}

.help-dialog-list li {
    margin-bottom: 0.4rem;
    line-height: 1.5;
}

@media (max-width: 640px) {
    .help-dialog {
        max-width: calc(100vw - 1rem);
    }

    .help-dialog-body,
    .help-dialog-header {
        padding-left: 0.9rem;
        padding-right: 0.9rem;
    }
}

.calculator-card-copy {
    min-width: 0;
}

.calculator-paper-link {
    max-width: 100%;
}

.check-row {
    display: grid;
    grid-template-columns: 22px minmax(0, 1fr) auto auto;
    align-items: start;
    column-gap: 0.65rem;
    row-gap: 0.35rem;
    width: 100%;
    padding: 0.72rem 0;
    cursor: pointer;
}

.check-row:hover {
    background: var(--color-surface-2);
}

.check-row-main {
    display: contents;
}

.check-row input[type="checkbox"] {
    grid-column: 1;
    width: 18px;
    height: 18px;
    margin: 0.18rem 0 0;
    accent-color: var(--color-primary);
    justify-self: center;
}

.check-label-text {
    grid-column: 2;
    min-width: 0;
    line-height: 1.45;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    overflow-wrap: anywhere;
}

.check-row-actions {
    grid-column: 3 / 5;
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.42rem;
    white-space: nowrap;
}

.score-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.35rem;
    min-height: 28px;
    padding: 0.15rem 0.52rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
    white-space: nowrap;
}

.info-btn {
    width: 30px;
    height: 30px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    font-size: 0.84rem;
    font-weight: 700;
    line-height: 1;
}

@media (max-width: 640px) {
    .check-row {
        grid-template-columns: 20px minmax(0, 1fr) auto auto;
        column-gap: 0.55rem;
    }

    .check-label-text {
        font-size: 1rem;
    }

    .score-badge {
        min-width: 2.15rem;
        font-size: 0.75rem;
    }

    .info-btn {
        width: 28px;
        height: 28px;
    }

    .calculator-card-copy {
        min-width: 0;
    }

    .calculator-paper-link {
        width: 100%;
        max-width: 100%;
        white-space: normal;
        overflow-wrap: anywhere;
        text-align: center;
    }
}

.calculator-card-copy {
    min-width: 0;
}

.calculator-paper-link {
    box-sizing: border-box;
    max-width: 100%;
}

@media (max-width: 640px) {
    .calculator-card-header {
        flex-direction: column;
        align-items: stretch;
    }

    .calculator-paper-link {
        display: block;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        white-space: normal;
        overflow-wrap: anywhere;
        word-break: break-word;
        text-align: center;
    }
}

.help-dialog {
    padding: 0;
    border: none;
    background: transparent;
    max-width: min(440px, calc(100vw - 1rem));
    width: 100%;
}

.help-dialog::backdrop {
    background: rgba(15, 20, 32, 0.5);
    backdrop-filter: blur(4px);
}

.help-dialog-box {
    width: 100%;
    max-height: min(80vh, 560px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    box-sizing: border-box;
}

@media (max-width: 640px) {
    .help-dialog {
        max-width: calc(100vw - 1rem);
    }

    .help-dialog-box {
        max-height: 82vh;
    }

    .check-label-text {
        font-size: 0.95rem;
    }
}

.install-card {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin: 1rem 0 1.25rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}

.install-card-copy {
    min-width: 0;
    flex: 1 1 auto;
}

.install-card-label {
    margin: 0 0 0.3rem;
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.install-card-title {
    margin: 0 0 0.35rem;
    font-size: 1rem;
    line-height: 1.25;
    color: var(--color-text-strong);
}

.install-card-text {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.install-card-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.65rem;
    flex: 0 0 auto;
}

@media (max-width: 640px) {
    .install-card {
        flex-direction: column;
        align-items: stretch;
    }

    .install-card-actions {
        flex-direction: column;
    }

    .install-card-actions button {
        width: 100%;
    }
}

.install-card-text strong {
    color: var(--color-text-strong);
    font-weight: 700;
}

.install-card-text {
    line-height: 1.65;
}