/* =========================================================
   COLOR SCIENCE LAB — UNIFIED GOLDEN DESIGN SYSTEM
   Shared stylesheet for Accessibility Lab (.ax-lab) and
   Color Formulation Lab (.cf-lab).

   Scoped CSS:
     .ax-hero / .ax-badge / .ax-lab   — Accessibility Lab
     .cf-hero / .cf-badge / .cf-lab   — Color Formulation Lab

   Color tokens: var(--color-surface), var(--color-gold),
   var(--color-border), var(--color-text-secondary),
   var(--font-mono). Radius base: 12px.
   ========================================================= */


/* =========================================================
   SECTION 1 — ACCESSIBILITY LAB  (.ax-*)
   ========================================================= */

/* ── HERO / HEADER ────────────────────────────────────── */
.ax-hero {
    background: transparent;
    text-align: center;
    padding: clamp(24px, 6vw, 48px) clamp(12px, 4vw, 24px) clamp(12px, 4vw, 24px);
}

.ax-hero h1 {
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    font-weight: 900;
    letter-spacing: -.02em;
    color: var(--color-black);
    margin: 0;
}

.ax-hero .ax-subtitle {
    font-size: .9rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
    max-width: 800px;
    margin-inline: auto;
    line-height: 1.6;
}

.ax-hero .ax-badges {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 14px;
}


/* ── BADGES ───────────────────────────────────────────── */
.ax-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: .68rem;
    font-weight: 700;
    border-radius: 999px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.ax-badge--gold {
    background: rgba(211, 175, 55, .12);
    color: var(--color-gold);
    border: 1px solid rgba(211, 175, 55, .25);
}

.ax-badge--green {
    background: rgba(22, 163, 74, .08);
    color: var(--color-success);
    border: 1px solid rgba(22, 163, 74, .2);
}

.ax-badge--blue {
    background: rgba(37, 99, 235, .08);
    color: var(--color-info);
    border: 1px solid rgba(37, 99, 235, .2);
}

.ax-badge--muted {
    background: var(--color-surface);
    color: var(--color-gray-400);
    border: 1px solid var(--color-border);
}


/* ── PANELS ───────────────────────────────────────────── */
.ax-lab .panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 6px 24px rgba(0, 0, 0, .06);
}

.ax-lab .panel-group {
    border-bottom: 1px solid rgba(224, 221, 213, .5);
    padding-bottom: 16px;
}

.ax-lab .panel-group:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.ax-lab .panel-label {
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.ax-lab .panel-notes {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ── BUTTONS ──────────────────────────────────────────── */
.ax-lab .panel-btn {
    font-family: var(--font-mono);
    border-radius: 999px;
    transition: background .18s ease, box-shadow .18s ease, color .18s ease;
}

.ax-lab .panel-btn:hover {
    background: var(--color-gold);
    color: var(--color-white);
    box-shadow: 0 6px 16px rgba(211, 175, 55, .25);
}

.ax-lab .panel-btn-ghost {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    box-shadow: none;
}

.ax-lab .panel-btn-ghost:hover {
    background: rgba(211, 175, 55, .08);
    border-color: rgba(211, 175, 55, .35);
    color: var(--color-gold);
    box-shadow: 0 4px 12px rgba(211, 175, 55, .12);
}

.ax-lab .panel-btn:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}


/* ── INPUT FIELDS ─────────────────────────────────────── */
.ax-lab .panel-field {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px !important;
    box-shadow: none;
    transition: border-color .18s ease;
}

/* ── CHART WRAP: relative container for the ⛶ button ─── */
.ax-lab .ascii-chart-wrap {
    position: relative;
}

.ax-lab .ascii-chart-fs-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 26px;
    height: 26px;
    background: rgba(0, 0, 0, .45);
    border: 1px solid rgba(211, 175, 55, .35);
    border-radius: 4px;
    color: #d3af37;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transition: opacity .15s ease, background .15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 2;
}

.ax-lab .ascii-chart-wrap:hover .ascii-chart-fs-btn,
.ax-lab .ascii-chart-fs-btn:focus {
    opacity: 1;
}

.ax-lab .ascii-chart-fs-btn:hover {
    background: rgba(211, 175, 55, .22);
    opacity: 1;
}

/* ── SQUARE/RECT OVERRIDES — all inputs, buttons, containers ── */
.ax-lab .br-8,
.ax-lab .br-12,
.ax-lab .panel-btn,
.ax-lab .panel-btn-ghost,
.ax-lab .panel-btn-pill,
.ax-lab .panel-color,
.ax-lab .panel-select,
.ax-lab input[type="text"],
.ax-lab input[type="number"],
.ax-lab input[type="color"],
.ax-lab textarea,
.ax-lab select {
    border-radius: 6px !important;
}

.ax-lab .panel-field:focus-within {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.ax-lab .panel-hex {
    font-family: var(--font-mono);
}

.ax-lab input[type="number"],
.ax-lab input[type="text"] {
    font-family: var(--font-mono);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: border-color .18s ease;
}

.ax-lab input[type="number"]:focus,
.ax-lab input[type="text"]:focus {
    border-color: var(--color-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.ax-lab select {
    font-family: var(--font-mono);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: 8px;
    transition: border-color .18s ease;
}

.ax-lab select:focus {
    border-color: var(--color-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}


/* ── CUSTOM DROPDOWNS ─────────────────────────────────── */
.ax-lab .dropdown-custom {
    position: relative;
    margin: 0;
}

.ax-lab .dropdown-custom .dropdown-toggle {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--color-text);
    cursor: pointer;
    width: 100%;
    text-align: left;
    padding: 6px 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    transition: border-color .18s ease, box-shadow .18s ease;
    user-select: none;
}

.ax-lab .dropdown-custom .dropdown-toggle::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    flex-shrink: 0;
    opacity: .55;
    transition: transform .18s ease, opacity .18s ease;
}

.ax-lab .dropdown-custom .dropdown-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
    opacity: 1;
    color: var(--color-gold);
}

.ax-lab .dropdown-custom .dropdown-toggle:hover {
    border-color: rgba(211, 175, 55, .4);
}

.ax-lab .dropdown-custom .dropdown-toggle:focus,
.ax-lab .dropdown-custom .dropdown-toggle:focus-visible {
    border-color: var(--color-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.ax-lab .dropdown-custom .dropdown-toggle[aria-expanded="true"] {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

/* Remove the ▾ HTML entity since we use ::after pseudo */
.ax-lab .dropdown-custom .dropdown-toggle> :last-child:not(span) {
    display: none;
}

.ax-lab .dropdown-custom .dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, .12), 0 2px 8px rgba(0, 0, 0, .06);
    padding: 4px;
    z-index: 300;
    /* hidden by default */
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity .15s ease, transform .15s ease, visibility .15s ease;
    min-width: 100%;
    max-height: 260px;
    overflow-y: auto;
}

/* open states — JS sets aria-expanded on toggle and .show on menu */
.ax-lab .dropdown-custom .dropdown-menu.show,
.ax-lab .dropdown-custom .dropdown-menu.active,
.ax-lab .dropdown-custom .dropdown-toggle[aria-expanded="true"]+.dropdown-menu {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ax-lab .dropdown-custom .dropdown-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 7px 10px;
    border-radius: 7px;
    font-family: var(--font-mono);
    font-size: .74rem;
    color: var(--color-text);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background .12s ease, color .12s ease;
    text-align: left;
    line-height: 1.3;
}

.ax-lab .dropdown-custom .dropdown-item:hover {
    background: rgba(211, 175, 55, .1);
    color: var(--color-text);
}

.ax-lab .dropdown-custom .dropdown-item[aria-selected="true"] {
    background: rgba(211, 175, 55, .1);
    color: var(--color-gold);
    font-weight: 700;
}

.ax-lab .dropdown-custom .dropdown-item:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: -2px;
}


/* ── RANGE SLIDERS ────────────────────────────────────── */
.ax-lab .panel-slider,
.ax-lab input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 20px;
    /* tall enough to contain the 16px thumb */
    background: transparent;
    /* track painted via ::before trick below */
    outline: none;
    cursor: pointer;
    padding: 0;
    margin: 2px 0;
    border: none;
    vertical-align: middle;
    /* filled-left gradient — JS sets background-size */
    background-image:
        linear-gradient(var(--color-gold), var(--color-gold)),
        linear-gradient(var(--color-border), var(--color-border));
    background-size: 50% 4px, 100% 4px;
    background-repeat: no-repeat;
    background-position: left center, center center;
}

/* WebKit thumb */
.ax-lab .panel-slider::-webkit-slider-thumb,
.ax-lab input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-gold);
    border: 2px solid #fff;
    box-shadow: 0 1px 6px rgba(211, 175, 55, .45);
    cursor: pointer;
    margin-top: -6px;
    /* center on 4px track: (4 - 16) / 2 = -6 */
    transition: transform .15s ease, box-shadow .15s ease;
}

.ax-lab .panel-slider::-webkit-slider-thumb:hover,
.ax-lab input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.18);
    box-shadow: 0 2px 10px rgba(211, 175, 55, .6);
}

.ax-lab .panel-slider:focus::-webkit-slider-thumb,
.ax-lab input[type="range"]:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .25), 0 1px 6px rgba(211, 175, 55, .4);
}

/* WebKit track */
.ax-lab .panel-slider::-webkit-slider-runnable-track,
.ax-lab input[type="range"]::-webkit-slider-runnable-track {
    height: 4px;
    border-radius: 9999px;
    background: transparent;
    border: none;
}

/* Firefox thumb */
.ax-lab .panel-slider::-moz-range-thumb,
.ax-lab input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-gold);
    border: 2px solid #fff;
    box-shadow: 0 1px 6px rgba(211, 175, 55, .45);
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease;
}

.ax-lab .panel-slider::-moz-range-thumb:hover,
.ax-lab input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.18);
}

/* Firefox track fill */
.ax-lab .panel-slider::-moz-range-progress,
.ax-lab input[type="range"]::-moz-range-progress {
    background: var(--color-gold);
    height: 4px;
    border-radius: 9999px;
}

.ax-lab .panel-slider::-moz-range-track,
.ax-lab input[type="range"]::-moz-range-track {
    background: var(--color-border);
    height: 4px;
    border-radius: 9999px;
}

.ax-lab .panel-sliderlabel {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ── COLLAPSIBLE PANELS ───────────────────────────────── */
.ax-lab .collapsible-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 10px 12px;
    transition: border-color .18s ease;
}

.ax-lab .collapsible-panel[open] {
    border-color: rgba(211, 175, 55, .35);
}

.ax-lab .collapsible-panel summary {
    font-family: var(--font-mono);
    cursor: pointer;
    user-select: none;
}

.ax-lab .collapsible-panel summary:hover {
    color: var(--color-gold);
}

.ax-lab .collapsible-panel .collapsible-icon {
    color: var(--color-gold);
    transition: transform .18s ease;
    display: inline-block;
    font-size: .7em;
}

.ax-lab .collapsible-panel[open] .collapsible-icon {
    transform: rotate(90deg);
}

.ax-lab .collapsible-content {
    color: var(--color-text-secondary);
}


/* ── TABBED INTERFACE ─────────────────────────────────── */
.ax-lab .tabs {
    border-bottom: 1px solid var(--color-border);
    gap: 0;
}

.ax-lab .tab-btn {
    font-family: var(--font-mono);
    border: 0;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 10px 14px;
    transition: border-color .18s ease, color .18s ease;
    white-space: nowrap;
}

.ax-lab .tab-btn:hover {
    color: var(--color-gold);
}

.ax-lab .tab-btn.active,
.ax-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}


/* ── CODE BLOCKS ──────────────────────────────────────── */
.ax-lab .bg-gray-50 {
    background: var(--color-surface) !important;
    border: 1px solid var(--color-border);
}


/* ── SWATCH CHIPS ─────────────────────────────────────── */
.ax-lab .shadow-light {
    box-shadow: 0 2px 12px rgba(0, 0, 0, .08);
}


/* ── TAGS / PASS-FAIL BADGES ──────────────────────────── */
.ax-lab .cv-access__tag,
.ax-lab .cv-pill {
    font-family: var(--font-mono);
}


/* ── BORDER SEPARATOR ─────────────────────────────────── */
.ax-lab .border-t {
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
}

.ax-lab .border {
    border-color: var(--color-border);
}


/* ── TOAST OVERRIDES ──────────────────────────────────── */
.ax-lab .cv-access__toast,
.ax-lab [data-toast] {
    font-family: var(--font-mono);
}


/* ── FOOTER NOTE ──────────────────────────────────────── */
.ax-lab .cv-cvd__footer-note {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ── CHECKBOX / LABEL STYLING ─────────────────────────── */
.ax-lab input[type="checkbox"] {
    accent-color: var(--color-gold);
}

.ax-lab label {
    cursor: pointer;
}


/* ── DETAILS SUMMARY WITHIN ADVANCED PANEL ────────────── */
.ax-lab details summary {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    cursor: pointer;
}


/* ── LINK TREATMENT ───────────────────────────────────── */
.ax-lab a {
    color: var(--color-gold);
    transition: color .18s ease;
}

.ax-lab a:hover {
    color: var(--color-gold);
}


/* =========================================================
   DARK MODE — body.dark-mode .ax-*
   ========================================================= */

body.dark-mode .ax-hero h1 {
    color: var(--color-white, #f5f5f4);
}

body.dark-mode .ax-hero .ax-subtitle {
    color: var(--color-gray-300);
}

body.dark-mode .ax-badge--gold {
    background: rgba(211, 175, 55, .15);
    color: var(--color-gold);
    border-color: rgba(211, 175, 55, .3);
}

body.dark-mode .ax-badge--green {
    background: rgba(22, 163, 74, .12);
    color: var(--color-success);
    border-color: rgba(22, 163, 74, .25);
}

body.dark-mode .ax-badge--blue {
    background: rgba(37, 99, 235, .12);
    color: var(--color-info);
    border-color: rgba(37, 99, 235, .25);
}

body.dark-mode .ax-badge--muted {
    background: rgba(255, 255, 255, .06);
    color: var(--color-gray-400);
    border-color: rgba(255, 255, 255, .1);
}

body.dark-mode .ax-lab .panel {
    background: var(--color-bg-card);
    border-color: rgba(211, 175, 55, .1);
    box-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}

body.dark-mode .ax-lab .panel-group {
    border-bottom-color: rgba(211, 175, 55, .08);
}

body.dark-mode .ax-lab .panel-label,
body.dark-mode .ax-lab .panel-notes,
body.dark-mode .ax-lab .text-muted {
    color: var(--color-gray-400);
}

body.dark-mode .ax-lab .text-sm,
body.dark-mode .ax-lab .text-xs {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab .panel-label.text-lg {
    color: var(--color-text);
}

body.dark-mode .ax-lab .panel-btn {
    background: var(--color-gold);
    color: var(--color-bg);
}

body.dark-mode .ax-lab .panel-btn:hover {
    background: var(--color-gold);
    box-shadow: 0 6px 16px rgba(211, 175, 55, .35);
}

body.dark-mode .ax-lab .panel-btn-ghost {
    background: var(--color-bg-muted);
    color: var(--color-gray-300);
    border-color: rgba(211, 175, 55, .15);
    box-shadow: none;
}

body.dark-mode .ax-lab .panel-btn-ghost:hover {
    background: rgba(211, 175, 55, .1);
    border-color: rgba(211, 175, 55, .35);
    color: var(--color-gold);
}

body.dark-mode .ax-lab .panel-field {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
}

body.dark-mode .ax-lab .panel-field:focus-within {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .15);
}

body.dark-mode .ax-lab .panel-hex,
body.dark-mode .ax-lab .panel-field input[type="text"] {
    color: var(--color-text);
}

body.dark-mode .ax-lab input[type="number"],
body.dark-mode .ax-lab input[type="text"] {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
    color: var(--color-text);
}

body.dark-mode .ax-lab input[type="number"]:focus,
body.dark-mode .ax-lab input[type="text"]:focus {
    border-color: var(--color-gold);
}

body.dark-mode .ax-lab select {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
    color: var(--color-text);
}

body.dark-mode .ax-lab select:focus {
    border-color: var(--color-gold);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-toggle {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .2);
    color: var(--color-text);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-toggle:hover {
    border-color: rgba(211, 175, 55, .45);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-toggle:focus,
body.dark-mode .ax-lab .dropdown-custom .dropdown-toggle:focus-visible {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .18);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-toggle[aria-expanded="true"] {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .18);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-menu {
    background: var(--color-bg-card, #1a1a1a);
    border-color: rgba(211, 175, 55, .2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, .55), 0 2px 8px rgba(0, 0, 0, .4);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-item {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-item:hover {
    background: rgba(211, 175, 55, .12);
    color: var(--color-text);
}

body.dark-mode .ax-lab .dropdown-custom .dropdown-item[aria-selected="true"] {
    color: var(--color-gold);
    background: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .panel-sliderlabel {
    color: var(--color-gray-400);
}

/* dark-mode slider track + thumb */
body.dark-mode .ax-lab .panel-slider,
body.dark-mode .ax-lab input[type="range"] {
    background-color: rgba(255, 255, 255, .1);
}

body.dark-mode .ax-lab .panel-slider::-webkit-slider-thumb,
body.dark-mode .ax-lab input[type="range"]::-webkit-slider-thumb {
    border-color: var(--color-bg, #111);
    box-shadow: 0 1px 8px rgba(211, 175, 55, .5);
}

body.dark-mode .ax-lab .panel-slider::-moz-range-thumb,
body.dark-mode .ax-lab input[type="range"]::-moz-range-thumb {
    border-color: var(--color-bg, #111);
    box-shadow: 0 1px 8px rgba(211, 175, 55, .5);
}

body.dark-mode .ax-lab .panel-slider::-moz-range-track,
body.dark-mode .ax-lab input[type="range"]::-moz-range-track {
    background: rgba(255, 255, 255, .1);
}

body.dark-mode .ax-lab .collapsible-panel {
    background: var(--color-bg-card);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .collapsible-panel[open] {
    border-color: rgba(211, 175, 55, .3);
}

body.dark-mode .ax-lab .collapsible-panel summary {
    color: var(--color-text);
}

body.dark-mode .ax-lab .collapsible-panel summary:hover {
    color: var(--color-gold);
}

body.dark-mode .ax-lab .collapsible-content {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab .collapsible-content strong {
    color: var(--color-text);
}

body.dark-mode .ax-lab .tabs {
    border-bottom-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .tab-btn {
    color: var(--color-gray-400);
}

body.dark-mode .ax-lab .tab-btn:hover {
    color: var(--color-gold);
}

body.dark-mode .ax-lab .tab-btn.active,
body.dark-mode .ax-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

body.dark-mode .ax-lab .bg-gray-50 {
    background: var(--color-bg-muted) !important;
    border-color: rgba(211, 175, 55, .1);
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab #cv-access-bg-chip,
body.dark-mode .ax-lab #cv-access-fg-chip,
body.dark-mode .ax-lab #cv-access-cvd-bg-chip,
body.dark-mode .ax-lab #cv-access-cvd-fg-chip {
    box-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}

body.dark-mode .ax-lab .bg-soft {
    background: var(--color-bg-muted);
}

body.dark-mode .ax-lab .border-t {
    border-top-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .border {
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .border-b {
    border-bottom-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .cv-access__tag.pass,
body.dark-mode .ax-lab .cv-pill.pass {
    background: rgba(16, 185, 129, .18);
    color: var(--color-success);
}

body.dark-mode .ax-lab .cv-access__tag.fail,
body.dark-mode .ax-lab .cv-pill.fail {
    background: rgba(239, 68, 68, .2);
    color: var(--color-danger);
}

body.dark-mode .ax-lab .cv-cvd__footer-note {
    color: var(--color-gray-400);
}

body.dark-mode .ax-lab #cv-access-advisor {
    color: var(--color-gray-400);
}

body.dark-mode .ax-lab .ff-mono.fs-12.text-muted,
body.dark-mode .ax-lab .ff-mono.text-muted {
    color: var(--color-gray-400);
}

body.dark-mode .ax-lab .contrast-matrix td,
body.dark-mode .ax-lab .contrast-matrix th {
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .cv-access__saved-item {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab .d-flex.flex-col.gap-16.text-xs.lh-1-8 {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab .d-flex.flex-col.gap-16.text-xs.lh-1-8 .fw-700 {
    color: var(--color-text);
}

body.dark-mode .ax-lab em {
    color: var(--color-gold);
}

body.dark-mode .ax-lab a {
    color: var(--color-gold);
}

body.dark-mode .ax-lab a:hover {
    color: var(--color-gold);
}

body.dark-mode .ax-lab input[type="checkbox"] {
    accent-color: var(--color-gold);
}

body.dark-mode .ax-lab details summary {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab #cv-access-advanced-panel {
    color: var(--color-gray-300);
}

body.dark-mode .ax-lab #cv-access-advanced-panel strong {
    color: var(--color-text);
}

/* ── Gamut Lab: bg-white → dark-mode override ────────────────── */
body.dark-mode .ax-lab .bg-white {
    background: var(--color-bg-card) !important;
}

/* ── Gamut Lab: readout <pre> / <div> with inline --color-bg-secondary ── */
body.dark-mode .ax-lab pre.text-xs.ff-mono,
body.dark-mode .ax-lab div.text-xs.ff-mono[aria-live="polite"] {
    background: var(--color-bg-muted) !important;
    border-color: rgba(211, 175, 55, .1) !important;
    color: var(--color-gray-300);
}

/* ── Gamut Lab: action tables + textarea ─────────────────────── */
body.dark-mode .ax-lab table th {
    color: var(--color-gray-400);
    border-bottom-color: rgba(211, 175, 55, .1);
}

body.dark-mode .ax-lab table td {
    border-bottom-color: rgba(211, 175, 55, .06);
}

body.dark-mode .ax-lab textarea.panel-field {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
    color: var(--color-gray-300);
}


/* =========================================================
   AX RESPONSIVE
   ========================================================= */
@media (max-width: 600px) {
    .ax-hero h1 {
        font-size: 1.4rem;
    }

    .ax-hero .ax-subtitle {
        font-size: .82rem;
    }

    .ax-badge {
        font-size: .6rem;
        padding: 2px 8px;
    }
}


/* =========================================================
   SECTION 2 — COLOR FORMULATION LAB  (.cf-*)
   ========================================================= */

/* ── HERO / HEADER ────────────────────────────────────── */
.cf-hero {
    background: transparent;
    text-align: center;
    padding: clamp(24px, 6vw, 48px) clamp(12px, 4vw, 24px) clamp(12px, 4vw, 24px);
}

.cf-hero h1 {
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    font-weight: 900;
    letter-spacing: -.02em;
    color: var(--color-black);
    margin: 0;
}

.cf-hero .cf-subtitle {
    font-size: .9rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
    max-width: 820px;
    margin-inline: auto;
    line-height: 1.6;
}

.cf-hero .cf-badges {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 14px;
}


/* ── BADGES ───────────────────────────────────────────── */
.cf-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: .68rem;
    font-weight: 700;
    border-radius: 999px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.cf-badge--gold {
    background: rgba(211, 175, 55, .12);
    color: var(--color-gold);
    border: 1px solid rgba(211, 175, 55, .25);
}

.cf-badge--green {
    background: rgba(22, 163, 74, .08);
    color: var(--color-success);
    border: 1px solid rgba(22, 163, 74, .2);
}

.cf-badge--blue {
    background: rgba(37, 99, 235, .08);
    color: var(--color-info);
    border: 1px solid rgba(37, 99, 235, .2);
}

.cf-badge--muted {
    background: var(--color-surface);
    color: var(--color-gray-400);
    border: 1px solid var(--color-border);
}

.cf-badge--warn {
    background: rgba(245, 158, 11, .1);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, .25);
}


/* ── PANELS ───────────────────────────────────────────── */
.cf-lab .panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 6px 24px rgba(0, 0, 0, .06);
}

.cf-lab .panel-group {
    border-bottom: 1px solid rgba(224, 221, 213, .5);
    padding-bottom: 16px;
}

.cf-lab .panel-group:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.cf-lab .panel-label {
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.cf-lab .panel-notes {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ── BUTTONS ──────────────────────────────────────────── */
.cf-lab .panel-btn {
    font-family: var(--font-mono);
    border-radius: 999px;
    transition: background .18s ease, box-shadow .18s ease, color .18s ease;
}

.cf-lab .panel-btn:hover {
    background: var(--color-gold);
    color: var(--color-white);
    box-shadow: 0 6px 16px rgba(211, 175, 55, .25);
}

.cf-lab .panel-btn-ghost {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    box-shadow: none;
}

.cf-lab .panel-btn-ghost:hover {
    background: rgba(211, 175, 55, .08);
    border-color: rgba(211, 175, 55, .35);
    color: var(--color-gold);
    box-shadow: 0 4px 12px rgba(211, 175, 55, .12);
}

.cf-lab .panel-btn:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}

.cf-lab .panel-btn-pill {
    border-radius: 999px;
}


/* ── INPUT FIELDS ─────────────────────────────────────── */
.cf-lab .panel-field {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: none;
    transition: border-color .18s ease;
}

.cf-lab .panel-field:focus-within {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.cf-lab input[type="number"],
.cf-lab input[type="text"] {
    font-family: var(--font-mono);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: border-color .18s ease;
}

.cf-lab input[type="number"]:focus,
.cf-lab input[type="text"]:focus {
    border-color: var(--color-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.cf-lab select {
    font-family: var(--font-mono);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: 8px;
    padding: 6px 10px;
    transition: border-color .18s ease;
    cursor: pointer;
}

.cf-lab select:focus {
    border-color: var(--color-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .12);
}

.cf-lab input[type="range"] {
    accent-color: var(--color-gold);
    width: 100%;
}

.cf-lab input[type="color"] {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: 2px solid var(--color-border);
    cursor: pointer;
    padding: 2px;
    background: transparent;
    transition: border-color .18s ease;
}

.cf-lab input[type="color"]:focus {
    border-color: var(--color-gold);
    outline: none;
}


/* ── COLORANT ROWS ────────────────────────────────────── */
.cf-colorant-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.cf-colorant-row:last-child {
    border-bottom: none;
}

.cf-colorant-swatch {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid var(--color-border);
    flex-shrink: 0;
}

.cf-colorant-conc {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--color-text-secondary);
    min-width: 32px;
    text-align: right;
}

.cf-colorant-remove {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: background .15s, color .15s;
}

.cf-colorant-remove:hover {
    background: rgba(239, 68, 68, .1);
    border-color: rgba(239, 68, 68, .3);
    color: #ef4444;
}


/* ── RESULT DISPLAY ───────────────────────────────────── */
.cf-result-strip {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
}

.cf-result-swatch-lg {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    border: 2px solid var(--color-border);
    flex-shrink: 0;
    transition: background-color .2s ease;
}

.cf-result-hex {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: .04em;
}

.cf-gamut-badge {
    font-family: var(--font-mono);
    font-size: .65rem;
    font-weight: 700;
    background: rgba(245, 158, 11, .12);
    color: #d97706;
    border: 1px solid rgba(245, 158, 11, .25);
    border-radius: 999px;
    padding: 2px 8px;
    text-transform: uppercase;
    letter-spacing: .06em;
}


/* ── RECIPE CARDS ─────────────────────────────────────── */
.cf-recipe-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 14px 16px;
}

.cf-recipe-title {
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
}

.cf-recipe-bar-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.cf-recipe-bar-label {
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 700;
    width: 24px;
    color: var(--color-text-secondary);
}

.cf-recipe-bar-track {
    flex: 1;
    height: 8px;
    background: var(--color-border);
    border-radius: 999px;
    overflow: hidden;
}

.cf-recipe-bar-fill {
    height: 100%;
    border-radius: 999px;
    transition: width .3s ease;
}

.cf-recipe-bar-pct {
    font-family: var(--font-mono);
    font-size: .68rem;
    width: 40px;
    text-align: right;
    color: var(--color-text-secondary);
}

.cf-pigment-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: .72rem;
    background: var(--color-surface);
}

.cf-pigment-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, .12);
    flex-shrink: 0;
}


/* ── HARMONY SWATCHES ─────────────────────────────────── */
.cf-harmony-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: flex-start;
}

.cf-harmony-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: transform .15s ease;
}

.cf-harmony-chip:hover {
    transform: translateY(-2px);
}

.cf-harmony-swatch {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    border: 2px solid var(--color-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
    transition: box-shadow .15s ease;
}

.cf-harmony-chip:hover .cf-harmony-swatch {
    box-shadow: 0 4px 16px rgba(0, 0, 0, .15);
}

.cf-harmony-hex {
    font-family: var(--font-mono);
    font-size: .62rem;
    color: var(--color-text-secondary);
}


/* ── LADDER SWATCHES ──────────────────────────────────── */
.cf-ladder-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.cf-ladder-swatch {
    width: 56px;
    height: 56px;
    border-radius: 8px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 4px;
    font-family: var(--font-mono);
    font-size: .55rem;
    color: rgba(255, 255, 255, .8);
    text-shadow: 0 1px 2px rgba(0, 0, 0, .5);
    border: 1px solid rgba(0, 0, 0, .08);
    cursor: pointer;
    transition: transform .12s ease;
}

.cf-ladder-swatch:hover {
    transform: scale(1.06);
}


/* ── COLOR SPACE TABLE ────────────────────────────────── */
.cf-space-table {
    width: 100%;
    border-collapse: collapse;
}

.cf-space-table th {
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-text-secondary);
    padding: 4px 8px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.cf-space-table td {
    font-family: var(--font-mono);
    font-size: .78rem;
    padding: 5px 8px;
    border-bottom: 1px solid rgba(224, 221, 213, .4);
    vertical-align: top;
}

.cf-space-table tr:last-child td {
    border-bottom: none;
}

.cf-space-table td:first-child {
    font-weight: 700;
    color: var(--color-gold);
    width: 80px;
}


/* ── VISION SIM PREVIEWS ──────────────────────────────── */
.cf-vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.cf-vision-card {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: .68rem;
}

.cf-vision-swatch {
    width: 100%;
    height: 64px;
    transition: background-color .25s ease;
}

.cf-vision-label {
    padding: 6px 8px;
    color: var(--color-text-secondary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    font-size: .62rem;
}

.cf-vision-hex {
    padding: 0 8px 6px;
    color: var(--color-text-secondary);
}


/* ── TABBED INTERFACE (inner) ─────────────────────────── */
.cf-lab .tabs {
    border-bottom: 1px solid var(--color-border);
    gap: 0;
}

.cf-lab .tab-btn {
    font-family: var(--font-mono);
    border: 0;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 10px 14px;
    transition: border-color .18s ease, color .18s ease;
    white-space: nowrap;
}

.cf-lab .tab-btn:hover {
    color: var(--color-gold);
}

.cf-lab .tab-btn.active,
.cf-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}


/* ── CODE BLOCKS ──────────────────────────────────────── */
.cf-lab .bg-gray-50 {
    background: var(--color-surface) !important;
    border: 1px solid var(--color-border);
}


/* ── OPTIMIZER RESULT ─────────────────────────────────── */
.cf-opt-result {
    font-family: var(--font-mono);
    font-size: .8rem;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-surface);
    min-height: 36px;
}


/* ── BACKEND STATUS ───────────────────────────────────── */
.cf-backend-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: .7rem;
    padding: 3px 10px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
}

.cf-backend-status::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-gold);
}

.cf-backend-status.ready::before {
    background: var(--color-success, #16a34a);
}

.cf-backend-status.error::before {
    background: #ef4444;
}

.cf-backend-status.busy::before {
    background: var(--color-gold);
    animation: cf-pulse 1s ease-in-out infinite;
}

@keyframes cf-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: .3;
    }
}


/* ── LINKS ─────────────────────────────────────────────── */
.cf-lab a {
    color: var(--color-gold);
    transition: color .18s ease;
}

.cf-lab a:hover {
    color: var(--color-gold);
    opacity: .8;
}


/* ── CHECKBOX ──────────────────────────────────────────── */
.cf-lab input[type="checkbox"] {
    accent-color: var(--color-gold);
}

.cf-lab label {
    cursor: pointer;
}

.cf-lab details summary {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    cursor: pointer;
}


/* ── BORDER UTILS ──────────────────────────────────────── */
.cf-lab .border-t {
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
}

.cf-lab .border {
    border-color: var(--color-border);
}

/* ── FOOTER NOTE ───────────────────────────────────────── */
.cf-lab .cf-cvd__footer-note {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ═══════════════════════════════════════════════════════════
   TOOL-RENDERED COLORANT ROWS
   ColorFormulationTool.renderColorants() emits .formulation-colorant
   and .conc-label
   ══════════════════════════════════════════════════════════ */
.cf-lab .formulation-colorant {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.cf-lab .formulation-colorant:last-child {
    border-bottom: none;
}

.cf-lab .formulation-colorant input[type="color"] {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid var(--color-border);
    flex-shrink: 0;
    cursor: pointer;
    padding: 2px;
    background: transparent;
    transition: border-color .18s ease;
}

.cf-lab .formulation-colorant input[type="color"]:focus {
    border-color: var(--color-gold);
    outline: none;
}

.cf-lab .formulation-colorant input[type="range"] {
    flex: 1;
    accent-color: var(--color-gold);
}

.cf-lab .conc-label {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--color-text-secondary);
    min-width: 36px;
    text-align: right;
    flex-shrink: 0;
}

.cf-lab .formulation-colorant button {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.cf-lab .formulation-colorant button:hover {
    background: rgba(239, 68, 68, .1);
    border-color: rgba(239, 68, 68, .3);
    color: #ef4444;
}


/* ═══════════════════════════════════════════════════════════
   TOOL-RENDERED LADDER SECTIONS
   ColorFormulationTool.renderLadder() emits .ladder-section,
   .ladder-row and .ladder-swatch
   ══════════════════════════════════════════════════════════ */
.cf-lab .ladder-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.cf-lab .ladder-section h4 {
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-text-secondary);
    margin: 0 0 4px;
}

.cf-lab .ladder-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.cf-lab .ladder-swatch {
    width: 56px;
    height: 56px;
    border-radius: 8px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 4px;
    font-family: var(--font-mono);
    font-size: .55rem;
    color: rgba(255, 255, 255, .8);
    text-shadow: 0 1px 2px rgba(0, 0, 0, .5);
    border: 1px solid rgba(0, 0, 0, .08);
    cursor: pointer;
    transition: transform .12s ease;
}

.cf-lab .ladder-swatch:hover {
    transform: scale(1.06);
}


/* ═══════════════════════════════════════════════════════════
   REFERENCES LIST
   ══════════════════════════════════════════════════════════ */
.cf-lab ol.refs-list {
    padding-left: 1.5rem;
    list-style: decimal;
    margin-top: 0;
}

.cf-lab ol.refs-list li {
    margin-bottom: 10px;
    line-height: 1.55;
}


/* =========================================================
   DARK MODE — body.dark-mode .cf-*
   ========================================================= */

body.dark-mode .cf-hero h1 {
    color: var(--color-white, #f5f5f4);
}

body.dark-mode .cf-hero .cf-subtitle {
    color: var(--color-gray-300);
}

body.dark-mode .cf-badge--gold {
    background: rgba(211, 175, 55, .15);
    color: var(--color-gold);
    border-color: rgba(211, 175, 55, .3);
}

body.dark-mode .cf-badge--green {
    background: rgba(22, 163, 74, .12);
    color: var(--color-success);
    border-color: rgba(22, 163, 74, .25);
}

body.dark-mode .cf-badge--blue {
    background: rgba(37, 99, 235, .12);
    color: var(--color-info);
    border-color: rgba(37, 99, 235, .25);
}

body.dark-mode .cf-badge--muted {
    background: rgba(255, 255, 255, .06);
    color: var(--color-gray-400);
    border-color: rgba(255, 255, 255, .1);
}

body.dark-mode .cf-lab .panel {
    background: var(--color-bg-card);
    border-color: rgba(211, 175, 55, .1);
    box-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}

body.dark-mode .cf-lab .panel-group {
    border-bottom-color: rgba(211, 175, 55, .08);
}

body.dark-mode .cf-lab .panel-label,
body.dark-mode .cf-lab .panel-notes,
body.dark-mode .cf-lab .text-muted {
    color: var(--color-gray-400);
}

body.dark-mode .cf-lab .text-sm,
body.dark-mode .cf-lab .text-xs {
    color: var(--color-gray-300);
}

body.dark-mode .cf-lab .panel-btn {
    background: var(--color-gold);
    color: var(--color-bg);
}

body.dark-mode .cf-lab .panel-btn:hover {
    box-shadow: 0 6px 16px rgba(211, 175, 55, .35);
}

body.dark-mode .cf-lab .panel-btn-ghost {
    background: var(--color-bg-muted);
    color: var(--color-gray-300);
    border-color: rgba(211, 175, 55, .15);
}

body.dark-mode .cf-lab .panel-btn-ghost:hover {
    background: rgba(211, 175, 55, .1);
    border-color: rgba(211, 175, 55, .35);
    color: var(--color-gold);
}

body.dark-mode .cf-lab input[type="number"],
body.dark-mode .cf-lab input[type="text"] {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
    color: var(--color-text);
}

body.dark-mode .cf-lab input[type="number"]:focus,
body.dark-mode .cf-lab input[type="text"]:focus {
    border-color: var(--color-gold);
}

body.dark-mode .cf-lab select {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .15);
    color: var(--color-text);
}

body.dark-mode .cf-lab select:focus {
    border-color: var(--color-gold);
}

body.dark-mode .cf-colorant-row {
    border-bottom-color: rgba(211, 175, 55, .08);
}

body.dark-mode .cf-result-strip {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-recipe-card {
    background: var(--color-bg-card);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-recipe-bar-track {
    background: rgba(255, 255, 255, .08);
}

body.dark-mode .cf-pigment-chip {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-vision-card {
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-vision-label {
    color: var(--color-gray-400);
}

body.dark-mode .cf-vision-hex {
    color: var(--color-gray-400);
}

body.dark-mode .cf-opt-result {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .1);
    color: var(--color-gray-300);
}

body.dark-mode .cf-backend-status {
    background: var(--color-bg-muted);
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-lab .tabs {
    border-bottom-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-lab .tab-btn {
    color: var(--color-gray-400);
}

body.dark-mode .cf-lab .tab-btn:hover {
    color: var(--color-gold);
}

body.dark-mode .cf-lab .tab-btn.active,
body.dark-mode .cf-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

body.dark-mode .cf-lab .bg-gray-50 {
    background: var(--color-bg-muted) !important;
    border-color: rgba(211, 175, 55, .1);
    color: var(--color-gray-300);
}

body.dark-mode .cf-lab .border,
body.dark-mode .cf-lab .border-t {
    border-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-space-table th {
    color: var(--color-gray-400);
    border-bottom-color: rgba(211, 175, 55, .1);
}

body.dark-mode .cf-space-table td {
    border-bottom-color: rgba(211, 175, 55, .06);
    color: var(--color-gray-300);
}

body.dark-mode .cf-harmony-swatch,
body.dark-mode .cf-ladder-swatch {
    border-color: rgba(255, 255, 255, .06);
}

body.dark-mode .cf-colorant-remove {
    border-color: rgba(255, 255, 255, .1);
    color: var(--color-gray-400);
}

body.dark-mode .cf-lab .formulation-colorant {
    border-bottom-color: rgba(211, 175, 55, .08);
}

body.dark-mode .cf-lab .formulation-colorant input[type="color"] {
    border-color: rgba(211, 175, 55, .2);
    background: var(--color-bg-muted);
}

body.dark-mode .cf-lab .formulation-colorant button {
    border-color: rgba(255, 255, 255, .1);
    color: var(--color-gray-400);
}

body.dark-mode .cf-lab .ladder-swatch {
    border-color: rgba(255, 255, 255, .06);
}

body.dark-mode .cf-lab .cf-cvd__footer-note {
    color: var(--color-gray-400);
}

body.dark-mode .cf-lab a {
    color: var(--color-gold);
}

body.dark-mode .cf-lab a:hover {
    color: var(--color-gold);
}

body.dark-mode .cf-lab input[type="checkbox"] {
    accent-color: var(--color-gold);
}

body.dark-mode .cf-lab details summary {
    color: var(--color-gray-300);
}


/* =========================================================
   CF RESPONSIVE
   ========================================================= */
@media (max-width: 600px) {
    .cf-hero h1 {
        font-size: 1.4rem;
    }

    .cf-hero .cf-subtitle {
        font-size: .82rem;
    }

    .cf-badge {
        font-size: .6rem;
        padding: 2px 8px;
    }
}


/* =========================================================
   SECTION 3 — COLOR HARMONY LAB  (.ch-*)
   ========================================================= */

/* ── HERO / HEADER ────────────────────────────────────── */
.ch-hero {
    background: transparent;
    text-align: center;
    padding: clamp(24px, 6vw, 48px) clamp(12px, 4vw, 24px) clamp(12px, 4vw, 24px);
}

.ch-hero h1 {
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    font-weight: 900;
    letter-spacing: -.02em;
    color: var(--color-black);
    margin: 0;
}

.ch-hero .ch-subtitle {
    font-size: .9rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
    max-width: 800px;
    margin-inline: auto;
    line-height: 1.6;
}

.ch-hero .ch-badges {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 14px;
}


/* ── BADGES ───────────────────────────────────────────── */
.ch-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: .68rem;
    font-weight: 700;
    border-radius: 999px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: .04em;
}

.ch-badge--gold {
    background: rgba(211, 175, 55, .12);
    color: var(--color-gold);
    border: 1px solid rgba(211, 175, 55, .25);
}

.ch-badge--green {
    background: rgba(22, 163, 74, .08);
    color: var(--color-success);
    border: 1px solid rgba(22, 163, 74, .2);
}

.ch-badge--blue {
    background: rgba(37, 99, 235, .08);
    color: var(--color-info);
    border: 1px solid rgba(37, 99, 235, .2);
}

.ch-badge--purple {
    background: rgba(124, 58, 237, .08);
    color: #7c3aed;
    border: 1px solid rgba(124, 58, 237, .2);
}

.ch-badge--muted {
    background: var(--color-surface);
    color: var(--color-gray-400);
    border: 1px solid var(--color-border);
}


/* ── PANELS ───────────────────────────────────────────── */
.ch-lab .panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 6px 24px rgba(0, 0, 0, .06);
}

.ch-lab .panel-group {
    border-bottom: 1px solid rgba(224, 221, 213, .5);
    padding-bottom: 16px;
}

.ch-lab .panel-group:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.ch-lab .panel-label {
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.ch-lab .panel-notes {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}


/* ── BUTTONS ──────────────────────────────────────────── */
.ch-lab .panel-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    font-size: .82rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--color-gold);
    background: var(--color-gold);
    color: #fff;
    cursor: pointer;
    transition: opacity .15s, box-shadow .15s;
    white-space: nowrap;
}

.ch-lab .panel-btn:hover {
    opacity: .88;
    box-shadow: 0 2px 10px rgba(211, 175, 55, .3);
}

.ch-lab .panel-btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: .82rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-black);
    cursor: pointer;
    transition: border-color .15s, background .15s;
}

.ch-lab .panel-btn-ghost:hover {
    border-color: var(--color-gold);
    background: rgba(211, 175, 55, .04);
}

.ch-lab .panel-btn-pill {
    border-radius: 999px;
}

.ch-lab .panel-btn:focus-visible,
.ch-lab .panel-btn-ghost:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}


/* ── PANEL INPUTS ─────────────────────────────────────── */
.ch-lab .panel-field {
    font-family: var(--font-sans);
    font-size: .82rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-card, #fff);
    color: var(--color-text);
    padding: 7px 12px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.ch-lab .panel-field:focus {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(211, 175, 55, .15);
}

.ch-lab .panel-color {
    width: 28px;
    height: 28px;
    border: none;
    background: none;
    padding: 0;
    cursor: pointer;
    border-radius: 50%;
}

.ch-lab .panel-hex {
    font-family: var(--font-mono);
    font-size: .8rem;
    background: transparent;
    border: none;
    color: var(--color-text);
    outline: none;
    width: 90px;
}


/* ── TABBED INTERFACE (inner sub-tabs) ────────────────── */
.ch-lab .tabs {
    border-bottom: 1px solid var(--color-border);
    gap: 0;
}

.ch-lab .tab-btn {
    font-family: var(--font-mono);
    border: 0;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: 10px 14px;
    transition: border-color .18s ease, color .18s ease;
    white-space: nowrap;
}

.ch-lab .tab-btn:hover {
    color: var(--color-gold);
}

.ch-lab .tab-btn.active,
.ch-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}


/* ── CODE BLOCKS ──────────────────────────────────────── */
.ch-lab .bg-gray-50 {
    background: var(--color-surface) !important;
    border: 1px solid var(--color-border);
}


/* ── COLLAPSIBLE PANELS (details/summary) ─────────────── */
.ch-lab .collapsible-panel {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: box-shadow .15s;
}

.ch-lab .collapsible-panel[open] {
    box-shadow: 0 2px 8px rgba(0, 0, 0, .07);
}

.ch-lab .collapsible-panel summary {
    list-style: none;
    cursor: pointer;
    user-select: none;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
}

.ch-lab .collapsible-panel summary::-webkit-details-marker {
    display: none;
}

.ch-lab .collapsible-panel summary:hover {
    color: var(--color-gold);
}

.ch-lab .collapsible-panel .collapsible-icon {
    font-size: .7rem;
    transition: transform .18s;
    color: var(--color-gold);
}

.ch-lab .collapsible-panel[open] .collapsible-icon {
    transform: rotate(90deg);
}

.ch-lab .collapsible-content {
    color: var(--color-text-secondary);
    padding: 0 12px 12px;
}


/* ── COMPARE GRID ─────────────────────────────────────── */
.ch-scheme-compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.ch-scheme-compare-card {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--color-bg-card, #fff);
    transition: box-shadow .15s;
}

.ch-scheme-compare-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, .12);
}

.ch-scheme-compare-title {
    padding: 8px 12px;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ch-scheme-compare-swatches {
    display: flex;
    height: 52px;
}

.ch-scheme-compare-swatches span {
    flex: 1;
}

.ch-scheme-compare-hexes {
    padding: 8px 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.ch-scheme-compare-hex {
    font-family: var(--font-mono);
    font-size: .68rem;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    cursor: pointer;
    color: var(--color-text);
    transition: background .12s, border-color .12s;
}

.ch-scheme-compare-hex:hover {
    border-color: var(--color-gold);
    background: rgba(211, 175, 55, .08);
}


/* ── SWATCH GRID ──────────────────────────────────────── */
.ch-swatch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}

.harmony-swatch {
    border-radius: 10px;
    min-height: 110px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 8px;
    cursor: pointer;
    transition: transform .15s, box-shadow .15s;
    position: relative;
    font-family: var(--font-mono);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
}

.harmony-swatch:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .2);
}

.harmony-swatch:focus {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
}

.harmony-swatch .swatch-hex {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .04em;
    background: rgba(0, 0, 0, .18);
    padding: 2px 6px;
    border-radius: 4px;
}

.harmony-swatch .swatch-hsl {
    font-size: .62rem;
    margin-top: 3px;
    opacity: .85;
}

.harmony-swatch .swatch-label {
    position: absolute;
    top: 6px;
    left: 8px;
    font-size: .6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    opacity: .7;
}


/* ── COLOR WHEEL CANVAS ───────────────────────────────── */
.ch-wheel-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.ch-wheel-canvas {
    border-radius: 50%;
    max-width: 100%;
    height: auto;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .12);
}


/* ── SCHEME SELECTOR ──────────────────────────────────── */
.ch-scheme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
}

.ch-scheme-card {
    border: 2px solid var(--color-border);
    border-radius: 10px;
    padding: 12px 14px;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    background: var(--color-surface);
}

.ch-scheme-card:hover,
.ch-scheme-card.active {
    border-color: var(--color-gold);
    background: rgba(211, 175, 55, .04);
}

.ch-scheme-card.active {
    background: rgba(211, 175, 55, .08);
}

.ch-scheme-card .ch-scheme-name {
    font-weight: 700;
    font-size: .82rem;
    color: var(--color-black);
}

.ch-scheme-card .ch-scheme-desc {
    font-size: .72rem;
    color: var(--color-text-secondary);
    margin-top: 3px;
    line-height: 1.5;
}


/* ── SPACES TABLE ─────────────────────────────────────── */
.ch-spaces-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: .8rem;
}

.ch-spaces-table th {
    text-align: left;
    padding: 8px 10px;
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

.ch-spaces-table td {
    padding: 8px 10px;
    border-bottom: 1px solid rgba(224, 221, 213, .4);
    vertical-align: middle;
}

.ch-spaces-table tr:last-child td {
    border-bottom: none;
}

.ch-spaces-table .swatch-dot {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 3px;
    margin-right: 6px;
    vertical-align: middle;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
}


/* ── CVD SECTION ──────────────────────────────────────── */
.ch-cvd-row {
    display: grid;
    grid-template-columns: minmax(120px, 1fr) 1fr 1fr 1fr;
    gap: 12px;
    align-items: start;
}

.ch-cvd-label {
    font-size: .75rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: .05em;
    padding-top: 8px;
}

.ch-cvd-swatches {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}


/* ── PALETTE CARDS ────────────────────────────────────── */
.ch-palette-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.ch-palette-card {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--color-surface);
    transition: box-shadow .15s;
}

.ch-palette-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, .1);
}

.ch-palette-swatches {
    display: flex;
    height: 52px;
}

.ch-palette-swatches>span {
    flex: 1;
}

.ch-palette-info {
    padding: 8px 12px;
}

.ch-palette-name {
    font-size: .8rem;
    font-weight: 700;
    color: var(--color-black);
}

.ch-palette-meta {
    font-size: .68rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    margin-top: 2px;
}

.ch-palette-actions {
    display: flex;
    gap: 8px;
    padding: 6px 12px 10px;
}


/* ── COMPARE GRID ─────────────────────────────────────── */
.ch-compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.ch-compare-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-surface);
}

.ch-compare-header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border);
    font-size: .8rem;
    font-weight: 700;
    color: var(--color-black);
    background: rgba(211, 175, 55, .04);
}

.ch-compare-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
}

.ch-compare-swatches .mini-swatch {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .15);
}


/* ── RESEARCH BACKEND STATUS ──────────────────────────── */
.ch-backend-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .75rem;
    font-family: var(--font-mono);
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.ch-backend-status .status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: .3;
    }
}

.ch-research-section {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 16px 18px;
    margin-bottom: 16px;
    background: var(--color-surface);
}

.ch-research-section h4 {
    font-size: .85rem;
    font-weight: 700;
    color: var(--color-black);
    margin: 0 0 6px;
}

.ch-research-section p {
    font-size: .8rem;
    color: var(--color-text-secondary);
    margin: 0 0 12px;
    line-height: 1.5;
}

.ch-result-box {
    background: rgba(0, 0, 0, .03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--color-text-secondary);
    min-height: 60px;
    white-space: pre-wrap;
    word-break: break-word;
}


/* ── DARK MODE — CH LAB ───────────────────────────────── */
body.dark-mode .ch-hero h1 {
    color: var(--color-white);
}

body.dark-mode .ch-hero .ch-subtitle {
    color: var(--color-gray-400);
}

body.dark-mode .ch-lab .panel {
    background: var(--color-surface);
    border-color: var(--color-border);
}

body.dark-mode .ch-lab .panel-group {
    border-bottom-color: rgba(60, 55, 50, .7);
}

body.dark-mode .ch-lab .panel-btn-ghost {
    color: var(--color-white);
    border-color: var(--color-border);
}

body.dark-mode .ch-lab .panel-btn-ghost:hover {
    border-color: var(--color-gold);
}

body.dark-mode .ch-lab .panel-field {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-white);
}

body.dark-mode .ch-lab .panel-hex {
    color: var(--color-white);
}

body.dark-mode .ch-lab .bg-gray-50 {
    background: var(--color-surface) !important;
    border-color: var(--color-border);
}

body.dark-mode .ch-lab .tab-btn {
    color: var(--color-gray-400);
}

body.dark-mode .ch-lab .tab-btn:hover {
    color: var(--color-gold);
}

body.dark-mode .ch-lab .tab-btn.active,
body.dark-mode .ch-lab .tab-btn[aria-selected="true"] {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

body.dark-mode .ch-lab .collapsible-panel {
    border-color: var(--color-border);
}

body.dark-mode .ch-lab .collapsible-panel summary {
    color: var(--color-gray-100);
}

body.dark-mode .ch-lab .collapsible-panel summary:hover {
    color: var(--color-gold);
}

body.dark-mode .ch-lab .collapsible-content {
    color: var(--color-gray-400);
}

body.dark-mode .ch-scheme-compare-card {
    background: var(--color-surface);
    border-color: var(--color-border);
}

body.dark-mode .ch-scheme-compare-title {
    background: var(--color-bg-muted);
    border-bottom-color: var(--color-border);
    color: var(--color-gray-100);
}

body.dark-mode .ch-scheme-compare-hex {
    background: var(--color-bg-muted);
    border-color: var(--color-border);
    color: var(--color-gray-300);
}

body.dark-mode .ch-scheme-card {
    background: var(--color-surface);
    border-color: var(--color-border);
}

body.dark-mode .ch-scheme-card .ch-scheme-name {
    color: var(--color-gray-100);
}

body.dark-mode .ch-spaces-table th,
body.dark-mode .ch-spaces-table td {
    border-color: var(--color-border);
}

body.dark-mode .ch-spaces-table th {
    color: var(--color-gray-400);
}

body.dark-mode .ch-palette-card,
body.dark-mode .ch-compare-card {
    background: var(--color-surface);
    border-color: var(--color-border);
}

body.dark-mode .ch-palette-name,
body.dark-mode .ch-compare-header {
    color: var(--color-gray-100);
}

body.dark-mode .ch-research-section {
    background: var(--color-surface);
    border-color: var(--color-border);
}

body.dark-mode .ch-research-section h4 {
    color: var(--color-gray-100);
}

body.dark-mode .ch-result-box {
    background: rgba(0, 0, 0, .18);
    border-color: var(--color-border);
    color: var(--color-gray-300);
}

body.dark-mode .ch-lab a:hover {
    color: var(--color-gold);
}

body.dark-mode .ch-lab input[type="checkbox"] {
    accent-color: var(--color-gold);
}

/* ── CH RESPONSIVE ────────────────────────────────────── */
@media (max-width: 600px) {
    .ch-hero h1 {
        font-size: 1.4rem;
    }

    .ch-hero .ch-subtitle {
        font-size: .82rem;
    }

    .ch-badge {
        font-size: .6rem;
        padding: 2px 8px;
    }

    .ch-cvd-row {
        grid-template-columns: 1fr 1fr;
    }
}