/*
 * PaletteSnape: the tool's own components, styled in the site's design language (7 Oct 2026, on the UltraCompress Pro
 * template, after StickyBoard). Base: /libs/site-pages.css (tokens, Inter and Space Grotesk, buttons, theme toggle, focus
 * rings) and /libs/shared-nav.css (the site's header and footer). This file holds only what the tool itself needs: the
 * toolbar with the status pill, the source card with its segmented tabs, drop zone, picture preview, pickers and search
 * results, the palette cards, the shades strip, the gradient card, the colour blindness rows, the contrast checker, the saved
 * list, the export list and window, the toasts and the information sections. Light is the default; dark applies when <html>
 * has no data-theme.
 */

/* ----- Tokens the tool adds ----- */
:root {
    --surface: #ffffff;
    --surface-2: #f3f4f8;
    --ring: rgba(139, 92, 246, 0.18);
    --app-max: 1600px;
    --radius-lg: 16px;
    --ok: #166534; --warn: #92400e; --bad: #b91c1c;
    --pass-bg: rgba(22, 163, 74, 0.14); --fail-bg: rgba(220, 38, 38, 0.12);
}
:root:not([data-theme="light"]) {
    --surface: #14141f;
    --surface-2: rgba(255, 255, 255, 0.05);
    --ok: #4ade80; --warn: #fbbf24; --bad: #f87171;
    --pass-bg: rgba(74, 222, 128, 0.16); --fail-bg: rgba(248, 113, 113, 0.16);
}

/* ----- Page: full width, the page provides the side space ----- */
.container.app-container { max-width: calc(var(--app-max) + 2 * var(--content-gutter)); margin-top: 16px; }
@media (min-width: 640px) { .container.app-container { margin-top: 24px; } }

/* ----- Tools back link above the header, as on every other tool ----- */
body { padding-top: 0; }
.back-bar { height: 48px; display: flex; align-items: center; padding: 0 var(--zdu-gutter, 24px); }
body > header { position: sticky; top: 0; z-index: 50; }
header .site-nav { position: relative; top: auto; }
.theme-toggle { top: calc(90px + var(--bar-offset, 48px)); }
@media (max-width: 768px) { .theme-toggle { top: calc(75px + var(--bar-offset, 48px)); } }
.hidden-input { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* ----- Hero ----- */
.app-hero { margin: 0 0 2rem; text-align: center; }
.app-brand { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 1.25rem; font-family: 'Space Grotesk', 'Inter', sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--text-strong); }
.app-brand img { width: 44px; height: 44px; border-radius: 12px; display: block; }
.app-hero h1 { margin-bottom: 0.75rem; }
.app-tagline { color: var(--text-2); font-size: 1.125rem; line-height: 1.6; max-width: 46rem; margin: 0 auto; }
.app-note { margin: -1.5rem 0 2.5rem; font-size: 0.85rem; color: var(--text-3); line-height: 1.55; max-width: 70ch; }

/* ----- Buttons ----- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 9999px; font-family: inherit; font-weight: 600; font-size: 0.95rem; line-height: 1.2; padding: 12px 24px; cursor: pointer; text-decoration: none; white-space: nowrap; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary { background: var(--gradient-brand); color: #fff; box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3); }
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4); color: #fff; }
.btn-secondary { background: var(--surface); color: var(--text-strong); border: 1px solid var(--surface-border); padding: 11px 23px; }
.btn-secondary:hover:not(:disabled) { border-color: var(--brand); color: var(--link); transform: translateY(-2px); }
.btn-danger { background: var(--surface); color: var(--danger); border: 1px solid rgba(185, 28, 28, 0.35); padding: 11px 23px; }
.btn-danger:hover:not(:disabled) { background: var(--danger-strong); color: #fff; border-color: transparent; transform: translateY(-2px); }
.btn-sm { font-size: 0.85rem; padding: 9px 16px; }
.btn-secondary.btn-sm { padding: 8px 15px; }
.btn-icon.btn-sm { width: 38px; height: 38px; padding: 0; font-size: 1.05rem; }
.btn-icon.btn-sm svg { width: 17px; height: 17px; }
.btn-stack { display: flex; flex-wrap: wrap; gap: 8px; }
.btn-stack--top { margin-top: 14px; }

/* ----- Toolbar ----- */
.app-shell { margin: 0 0 3rem; scroll-margin-top: 90px; }
.app-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; margin: 0 0 1.25rem; }
.toolbar-left, .toolbar-right { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.status-pill { display: inline-flex; align-items: center; gap: 10px; padding: 6px 16px 6px 10px; border-radius: 9999px; border: 1px solid var(--tint-brand-border); background: var(--tint-brand); min-width: 200px; max-width: 100%; }
.status-icon { font-size: 1.3rem; line-height: 1; }
.status-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.status-main { font-weight: 700; font-size: 0.85rem; color: var(--text-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.status-sub { font-size: 0.72rem; color: var(--text-3); }
.shell-hint { margin-top: 14px; }
kbd { font-family: inherit; font-size: 0.72rem; font-weight: 700; padding: 1px 6px; border-radius: 6px; border: 1px solid var(--chip-border); background: var(--chip); color: var(--text-strong); }

/* ----- Cards ----- */
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-bottom: 20px; }
.card--wide { grid-column: span 2; }
.card-grid--three .card { grid-column: auto; }
.card { background: var(--surface); border: 1px solid var(--surface-border); border-radius: var(--radius-lg); box-shadow: var(--surface-shadow); overflow: hidden; display: flex; flex-direction: column; min-width: 0; margin-bottom: 0; }
.app-shell > .card { margin-bottom: 20px; }
.card-header { padding: 14px 20px; border-bottom: 1px solid var(--surface-border); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card-title { margin: 0; font-size: 1.05rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.card-note { font-size: 0.8125rem; color: var(--text-3); }
.card-body { padding: 16px 20px 20px; flex: 1; }
.card-body[hidden] { display: none; }
.form-hint { font-size: 0.78rem; color: var(--text-3); margin: 10px 0 0; line-height: 1.5; }
.seg-tabs { display: inline-flex; gap: 4px; padding: 4px; border-radius: 9999px; background: var(--surface-2); max-width: 100%; overflow-x: auto; }
.seg-tab { padding: 7px 14px; border: 0; border-radius: 9999px; background: transparent; font-family: inherit; font-size: 0.82rem; font-weight: 600; color: var(--text-2); cursor: pointer; white-space: nowrap; transition: background 0.2s ease, color 0.2s ease; }
.seg-tab:hover { color: var(--link); }
.seg-tab.active { background: var(--gradient-brand); color: #fff; box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3); }
.seg-tab:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

/* ----- Source: drop zone, preview, pickers, search ----- */
.drop-zone { border: 2px dashed var(--chip-border); border-radius: var(--radius-lg); padding: 36px 20px; text-align: center; cursor: pointer; transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease; }
.drop-zone:hover, .drop-zone.drag-over, .drop-zone:focus-visible { border-color: var(--brand); background: var(--tint-brand); transform: translateY(-2px); outline: none; }
.drop-zone:hover .drop-icon, .drop-zone.drag-over .drop-icon { transform: scale(1.08); }
.drop-icon { width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 14px; background: var(--gradient-brand); display: flex; align-items: center; justify-content: center; color: #fff; box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35); transition: transform 0.25s ease; }
.drop-icon svg { width: 34px; height: 34px; }
.drop-zone h3 { margin: 0 0 6px; font-size: 1.15rem; }
.drop-zone p { margin: 0; color: var(--text-2); font-size: 0.9rem; }
.image-preview { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 18px; align-items: start; }
.image-preview[hidden] { display: none; }
.image-preview img { width: 100%; height: auto; max-height: 320px; object-fit: contain; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--surface-border); }
.preview-side .btn-stack { margin-top: 4px; }
.picker-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.picker-row--tight { margin-bottom: 0; flex-wrap: nowrap; }
.picker-row .native-picker { width: 46px; } /* the site base's .form-group input { width: 100% } stretched the contrast pickers (8 Oct 2026) */
.native-picker { width: 46px; height: 42px; padding: 2px; border: 1px solid var(--field-border); border-radius: 12px; background: var(--field); cursor: pointer; flex-shrink: 0; }
.native-picker::-webkit-color-swatch-wrapper { padding: 0; } .native-picker::-webkit-color-swatch { border: 0; border-radius: 8px; } .native-picker::-moz-color-swatch { border: 0; border-radius: 8px; }
.form-input.hex-input { width: 130px; flex: 0 0 130px; font-family: 'Space Grotesk', 'Inter', monospace; font-weight: 600; text-transform: uppercase; }
.form-group { margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }
.form-label { display: block; margin-bottom: 6px; font-size: 0.85rem; font-weight: 600; color: var(--text-strong); }
.form-input { width: 100%; min-width: 0; padding: 10px 14px; background: var(--field); border: 1px solid var(--field-border); border-radius: 12px; font-family: inherit; font-size: 0.95rem; color: var(--text); outline: none; transition: border-color 0.2s ease, box-shadow 0.2s ease; }
.form-input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px var(--ring); }
.form-input::placeholder { color: var(--placeholder); }
select.form-input { appearance: none; -webkit-appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 14px; cursor: pointer; }
select.form-input option { color: #0a0a14; background: #fff; }
.name-input { width: 260px; max-width: 100%; padding: 8px 14px; font-size: 0.9rem; }
.form-error { margin: -6px 0 10px; font-size: 0.8rem; color: var(--danger); }
.form-error:empty { display: none; }
.choice-row { display: flex; flex-wrap: wrap; gap: 8px; }
.choice-row--tight { margin: 12px 0 10px; }
.choice-btn { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 9999px; border: 1px solid var(--chip-border); background: var(--surface); font-family: inherit; font-size: 0.85rem; font-weight: 600; color: var(--text-2); cursor: pointer; transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
.choice-btn--sm { padding: 7px 13px; font-size: 0.8rem; }
.choice-btn:hover { border-color: var(--brand); color: var(--link); transform: translateY(-1px); }
.choice-btn[aria-checked="true"] { background: var(--gradient-brand); color: #fff; border-color: transparent; }
.choice-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.search-box { position: relative; }
.search-box svg { position: absolute; left: 14px; top: 50%; width: 16px; height: 16px; transform: translateY(-50%); color: var(--text-3); pointer-events: none; }
.search-box .form-input { padding-left: 40px; border-radius: 9999px; }
.search-results { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.search-results:empty { display: none; }
.search-hit { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; border-radius: 9999px; border: 1px solid var(--chip-border); background: var(--surface); font-family: inherit; font-size: 0.82rem; color: var(--text-strong); cursor: pointer; transition: border-color 0.2s ease, transform 0.2s ease; }
.search-hit:hover { border-color: var(--brand); transform: translateY(-1px); }
.search-hit i { width: 24px; height: 24px; border-radius: 50%; border: 1px solid rgba(0, 0, 0, 0.1); flex-shrink: 0; }
.search-hit small { color: var(--text-3); font-family: 'Space Grotesk', 'Inter', monospace; }
.search-none { color: var(--text-3); font-size: 0.85rem; margin: 10px 0 0; }

/* ----- Palette ----- */
.palette-grid { display: flex; flex-wrap: wrap; gap: 14px; }
.color-card { flex: 1 1 200px; max-width: 320px; min-width: 0; border-radius: 14px; border: 1px solid var(--surface-border); background: var(--surface-2); overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.color-card:hover { transform: translateY(-3px); box-shadow: var(--surface-hover-shadow); }
.color-card.is-selected { box-shadow: 0 0 0 3px var(--ring), var(--surface-hover-shadow); border-color: var(--brand); }
.color-swatch { height: 92px; width: 100%; border: 0; padding: 10px; cursor: pointer; display: flex; align-items: flex-start; justify-content: space-between; font-family: inherit; }
.color-swatch:focus-visible { outline: 2px solid var(--brand); outline-offset: -4px; }
.swatch-hex { font-family: 'Space Grotesk', 'Inter', monospace; font-weight: 700; font-size: 0.9rem; letter-spacing: 0.02em; padding: 3px 8px; border-radius: 8px; background: rgba(255, 255, 255, 0.55); color: #111827; }
.swatch-hex.on-dark { background: rgba(0, 0, 0, 0.4); color: #fff; }
.lock-mark { font-size: 1rem; padding: 2px 6px; border-radius: 8px; background: rgba(255, 255, 255, 0.55); }
.lock-mark.on-dark { background: rgba(0, 0, 0, 0.4); }
.color-info { padding: 10px 12px 10px; }
.color-name { font-weight: 700; font-size: 0.9rem; color: var(--text-strong); }
.color-values { font-size: 0.72rem; color: var(--text-3); font-family: 'Space Grotesk', 'Inter', monospace; line-height: 1.5; }
.color-actions { display: flex; gap: 4px; padding: 0 8px 8px; }
.icon-btn { width: 30px; height: 30px; border-radius: 9px; border: 1px solid transparent; background: transparent; font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text-2); flex-shrink: 0; transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease; }
.icon-btn:hover { border-color: var(--brand); color: var(--link); background: var(--surface); }
.icon-btn.is-on { background: var(--tint-brand); border-color: var(--brand); }
.icon-btn.is-danger:hover { border-color: var(--danger); color: var(--danger); }
.icon-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.empty-state { flex: 1 1 100%; text-align: center; padding: 26px 16px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.empty-icon { font-size: 2.2rem; line-height: 1; }
.empty-state p { margin: 0; color: var(--text-3); font-size: 0.92rem; max-width: 40ch; }

/* ----- Shades, gradient, colour blindness ----- */
.shades { display: grid; grid-template-columns: repeat(11, minmax(0, 1fr)); gap: 3px; }
.shade { height: 56px; border: 0; padding: 0; border-radius: 6px; cursor: pointer; position: relative; font-family: inherit; }
.shade:first-child { border-top-left-radius: 12px; border-bottom-left-radius: 12px; } .shade:last-child { border-top-right-radius: 12px; border-bottom-right-radius: 12px; }
.shade:hover { transform: scaleY(1.08); z-index: 1; }
.shade:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.shade span { position: absolute; left: 0; right: 0; bottom: 4px; font-size: 0.6rem; font-weight: 700; text-align: center; }
.shade.is-base::after { content: ''; position: absolute; top: 5px; left: 50%; width: 6px; height: 6px; margin-left: -3px; border-radius: 50%; background: currentColor; }
.shades-empty { color: var(--text-3); font-size: 0.9rem; margin: 0; padding: 18px 0; text-align: center; }
.gradient-preview { height: 110px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--surface-border); }
.brand-range { width: 100%; height: 6px; border-radius: 3px; appearance: none; -webkit-appearance: none; background: linear-gradient(to right, #8B5CF6 0%, #EC4899 var(--fill, 25%), var(--surface-2) var(--fill, 25%)); outline: none; margin: 6px 0 4px; }
.brand-range::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 3px solid #8B5CF6; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25); cursor: pointer; }
.brand-range::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: #fff; border: 3px solid #8B5CF6; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25); cursor: pointer; }
.brand-range:focus-visible { outline: 2px solid var(--brand); outline-offset: 4px; }
#angleGroup[hidden] { display: none; }
.code-box { margin: 0 0 10px; padding: 12px 14px; border-radius: 12px; background: #0a0a14; color: #e5e7eb; font-family: 'Space Grotesk', 'Inter', monospace; font-size: 0.78rem; line-height: 1.5; white-space: pre-wrap; overflow-wrap: anywhere; max-height: 120px; overflow: auto; border: 1px solid rgba(255, 255, 255, 0.1); }
.code-box--tall { max-height: 50vh; font-size: 0.82rem; }
.sim-list { display: flex; flex-direction: column; gap: 10px; }
.sim-row { display: grid; grid-template-columns: 110px minmax(0, 1fr); align-items: center; gap: 10px; }
.sim-row .sim-name { font-size: 0.8rem; font-weight: 600; color: var(--text-strong); line-height: 1.2; }
.sim-row .sim-name small { display: block; font-weight: 500; color: var(--text-3); font-size: 0.68rem; }
.sim-strip { display: flex; gap: 3px; height: 34px; }
.sim-strip i { flex: 1; border-radius: 6px; }
.sim-strip i:first-child { border-top-left-radius: 10px; border-bottom-left-radius: 10px; } .sim-strip i:last-child { border-top-right-radius: 10px; border-bottom-right-radius: 10px; }
.sim-strip.is-empty { background: var(--surface-2); border-radius: 10px; }

/* ----- Contrast checker ----- */
.contrast-controls { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.contrast-controls .form-group { margin: 0; }
.contrast-preview { border-radius: 12px; padding: 18px 20px; margin-bottom: 14px; border: 1px solid var(--surface-border); }
.contrast-preview p { color: inherit; } /* show the chosen text colour, not the site's paragraph colour */
.contrast-big { margin: 0 0 6px; font-size: 24px; font-weight: 700; line-height: 1.2; }
.contrast-small { margin: 0; font-size: 16px; line-height: 1.5; }
.contrast-results { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.contrast-ratio { display: flex; flex-direction: column; min-width: 120px; }
.stat-value { font-family: 'Space Grotesk', 'Inter', sans-serif; font-size: 2rem; font-weight: 700; line-height: 1.1; background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 0.75rem; color: var(--text-3); }
.wcag-grid { display: grid; grid-template-columns: repeat(2, auto); gap: 8px; }
.wcag-pill { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 9999px; font-size: 0.8rem; font-weight: 600; background: var(--surface-2); color: var(--text-2); }
.wcag-pill.pass { background: var(--pass-bg); color: var(--ok); } .wcag-pill.fail { background: var(--fail-bg); color: var(--bad); }
.wcag-pill::before { content: '·'; font-weight: 700; } .wcag-pill.pass::before { content: '✓'; } .wcag-pill.fail::before { content: '✗'; }

/* ----- Saved palettes and export ----- */
.saved-list { display: flex; flex-direction: column; gap: 8px; max-height: 360px; overflow-y: auto; }
.saved-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 12px; background: var(--surface-2); }
.saved-strip { display: flex; gap: 2px; height: 28px; width: 110px; flex-shrink: 0; border-radius: 8px; overflow: hidden; }
.saved-strip i { flex: 1; }
.saved-text { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.25; }
.saved-name { font-weight: 600; font-size: 0.88rem; color: var(--text-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.saved-date { font-size: 0.72rem; color: var(--text-3); }
.saved-empty { color: var(--text-3); font-size: 0.9rem; margin: 0; }
.export-list { display: flex; flex-direction: column; gap: 8px; }
.export-btn { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; width: 100%; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--surface-border); background: var(--surface-2); font-family: inherit; text-align: left; cursor: pointer; transition: border-color 0.2s ease, transform 0.2s ease; }
.export-btn:hover { border-color: var(--brand); transform: translateY(-2px); }
.export-btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.export-btn strong { font-size: 0.9rem; color: var(--text-strong); }
.export-btn span { font-size: 0.75rem; color: var(--text-3); }

/* ----- Windows ----- */
.modal-overlay { position: fixed; inset: 0; background: rgba(10, 10, 20, 0.6); backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 1000; opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease; }
.modal-overlay.active { opacity: 1; visibility: visible; }
.lock-overlay { background: rgba(10, 10, 20, 0.86); backdrop-filter: blur(14px); z-index: 1100; }
.modal { background: var(--surface); border: 1px solid var(--surface-border); border-radius: 20px; box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35); width: 100%; max-width: 520px; max-height: 92vh; overflow: hidden; display: flex; flex-direction: column; transform: translateY(12px); transition: transform 0.25s ease; }
.modal--narrow { max-width: 420px; }
.modal-overlay.active .modal { transform: translateY(0); }
.modal-header { padding: 18px 20px; border-bottom: 1px solid var(--surface-border); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.modal-title { margin: 0; font-size: 1.15rem; }
.modal-close { width: 36px; height: 36px; flex-shrink: 0; border-radius: 50%; border: 1px solid var(--chip-border); background: var(--chip); color: var(--text-strong); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: border-color 0.2s ease, color 0.2s ease; }
.modal-close:hover { border-color: var(--brand); color: var(--link); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--surface-border); display: flex; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }
.modal-footer--center { justify-content: center; }
.confirm-message { margin: 0; color: var(--text); }
.result-body { text-align: center; }
.result-icon { font-size: 3.2rem; line-height: 1; margin-bottom: 8px; animation: pop 0.4s ease; }
@keyframes pop { from { transform: scale(0.6); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.result-message { color: var(--text-2); margin: 6px 0 14px; }

/* ----- Toasts ----- */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 3000; display: flex; flex-direction: column; gap: 10px; max-width: calc(100vw - 32px); }
.toast { background: #0a0a14; color: #fff; border: 1px solid rgba(255, 255, 255, 0.12); border-left: 4px solid var(--brand); border-radius: 14px; padding: 12px 16px; display: flex; align-items: center; gap: 12px; box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3); min-width: 260px; max-width: 400px; font-size: 0.875rem; font-weight: 500; overflow-wrap: anywhere; animation: slideIn 0.3s ease; transition: opacity 0.3s ease, transform 0.3s ease; }
.toast-icon { font-size: 1.1rem; line-height: 1; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.toast.success { border-left-color: #4ade80; } .toast.error { border-left-color: #f87171; } .toast.warning { border-left-color: #fbbf24; } .toast.info { border-left-color: #38bdf8; }
.toast.leaving { opacity: 0; transform: translateX(40px); }

/* ----- Information sections ----- */
.info-section { margin: 0 0 2.5rem; }
.info-section h2 { font-size: 1.75rem; margin: 0 0 1.25rem; }
.info-section > p { max-width: 70ch; }
.info-section .info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.info-three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 1rem 0 1.5rem; }
.info-stack { display: grid; gap: 12px; }
.info-card { background: var(--surface); border: 1px solid var(--surface-border); border-radius: 16px; box-shadow: var(--surface-shadow); padding: 20px; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.info-card:hover { transform: translateY(-4px); box-shadow: var(--surface-hover-shadow); }
.info-card--small { padding: 16px; box-shadow: none; }
.info-card h3 { margin: 0 0 0.75rem; font-size: 1.15rem; }
.info-card p { color: var(--text-2); margin-bottom: 0.75rem; }
.info-card p:last-child { margin-bottom: 0; }
.info-section article:not(.info-card) p { color: var(--text-2); max-width: 70ch; }
.step-card { position: relative; padding-top: 24px; }
.step-num { position: absolute; top: -16px; left: 20px; width: 34px; height: 34px; border-radius: 50%; background: var(--gradient-brand); color: #fff; font-weight: 700; font-size: 0.95rem; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3); }
.step-head { display: flex; align-items: center; gap: 12px; margin-bottom: 0.75rem; }
.step-head h3 { margin: 0; }
.step-emoji { font-size: 1.6rem; line-height: 1; }
.info-section details.info-card { padding: 0; }
.info-section details.info-card summary { cursor: pointer; padding: 16px 20px; font-weight: 600; color: var(--text-strong); list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.info-section details.info-card summary::-webkit-details-marker { display: none; }
.info-section details.info-card summary::after { content: '+'; color: var(--link); font-weight: 700; font-size: 1.2rem; line-height: 1; flex-shrink: 0; }
.info-section details.info-card[open] summary::after { content: '\2212'; }
.info-section details.info-card p { padding: 0 20px 16px; margin: 0; color: var(--text-2); }

/* ----- Tablets ----- */
@media (max-width: 1023px) {
    .card-grid { grid-template-columns: 1fr; }
    .card--wide { grid-column: auto; }
    .info-section .info-grid { grid-template-columns: repeat(2, 1fr); }
    .info-three { grid-template-columns: 1fr; }
}

/* ----- Phones ----- */
@media (max-width: 639px) {
    .app-hero { margin-bottom: 1.5rem; }
    .app-tagline { font-size: 1rem; }
    .app-toolbar { gap: 10px; }
    .toolbar-left, .toolbar-right { width: 100%; }
    .status-pill { flex: 1; min-width: 0; }
    .toolbar-right .btn { flex: 1 1 auto; }
    .card-grid { gap: 14px; margin-bottom: 14px; }
    .app-shell > .card { margin-bottom: 14px; }
    .card-header { padding-left: 16px; padding-right: 16px; }
    .card-body { padding: 14px 16px 16px; }
    .seg-tabs { width: 100%; }
    .seg-tab { flex: 1; padding: 7px 4px; font-size: 0.76rem; text-align: center; }
    .drop-zone { padding: 26px 14px; }
    .image-preview { grid-template-columns: 1fr; }
    .name-input { width: 100%; }
    .color-card { flex-basis: 100%; max-width: none; }
    .shade span { display: none; }
    .sim-row { grid-template-columns: 84px minmax(0, 1fr); }
    .contrast-controls .form-group { flex: 1 1 100%; }
    .wcag-grid { grid-template-columns: 1fr; }
    .modal-overlay { padding: 8px; }
    .modal-body, .modal-header, .modal-footer { padding-left: 16px; padding-right: 16px; }
    .toast-container { bottom: 16px; right: 16px; left: 16px; align-items: flex-end; }
    .toast { min-width: 0; }
    .info-section h2 { font-size: 1.4rem; }
    .info-section .info-grid, .info-three { grid-template-columns: 1fr; }
    .info-card { padding: 16px; }
    .step-num { left: 16px; }
}

@media (prefers-reduced-motion: reduce) {
    .btn, .info-card, .modal, .toast, .color-card, .drop-zone, .drop-icon, .choice-btn, .export-btn, .search-hit { transition: none; animation: none; }
}

/* Phones: 16 px text, 44 px tap targets (AdSense audit H-04, 8 Oct 2026) */
@media (max-width: 639.98px) {
    main button, main select, main summary, main [role="button"],
    main input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):not([type="file"]) { min-height: 44px; }
    div#dropZone.drop-zone > p,
    div#savedList.saved-list > p.saved-empty,
    div#shades.shades > p.shades-empty,
    div.card-body > p.form-hint,
    div.card-body.contrast-body > p.form-hint,
    div.empty-state > p,
    section#app-shell.app-shell > p.form-hint.shell-hint { font-size: 1rem; }
    main button#swapContrastBtn { min-width: 44px; }
}