/* Base layout, components and behaviour - all colors/fonts/shapes come from CSS custom
   properties defined per-skin in theme-*.css, so this file never hardcodes a color. */

* { box-sizing: border-box; }

html {
    --font-scale: 1;
}

html[data-text-size="large"] { --font-scale: 1.15; }
html[data-text-size="xlarge"] { --font-scale: 1.3; }

html, body { height: 100%; }

body {
    margin: 0;
    background:
        radial-gradient(circle at 10% -10%, rgba(var(--color-glow-rgb, 0, 0, 0), 0.06) 0%, transparent 45%),
        radial-gradient(circle at 90% 0%, rgba(var(--color-glow-rgb, 0, 0, 0), 0.04) 0%, transparent 45%),
        var(--color-bg);
    background-attachment: fixed;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: calc(1rem * var(--font-scale));
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.2s ease, color 0.2s ease;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.2; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }

a { color: var(--color-primary); }

.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;
}

.skip-link {
    position: absolute;
    left: 0.5rem; top: -3rem;
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: top 0.15s ease;
    text-decoration: none;
    font-weight: 600;
}
.skip-link:focus { top: 0.5rem; }

:focus-visible {
    outline: 3px solid var(--color-focus, var(--color-primary));
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

@keyframes fade-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fade-up 0.4s cubic-bezier(0.16, 1, 0.3, 1) both; }

/* ---------- Nav + toolbar ---------- */
.app-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
}

.app-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-text);
    font-weight: 700;
    text-decoration: none;
    font-size: 1.05rem;
}

.a11y-toolbar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.a11y-group {
    display: inline-flex;
    gap: 0.3rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    padding: 0.25rem;
    margin: 0;
}

.a11y-btn {
    appearance: none;
    border: 1px solid transparent;
    background: transparent;
    color: var(--color-text);
    font: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.a11y-btn:hover { background: var(--color-surface-alt); }
.a11y-btn[aria-pressed="true"] { background: var(--color-primary); color: var(--color-primary-contrast); }
.a11y-btn.icon-btn {
    width: 2.2rem; height: 2.2rem;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid var(--color-border);
    padding: 0;
    font-weight: 700;
}

/* Deliberately more prominent than the other toolbar controls (bigger, colored border, its own
   label) since this is the one a low-vision visitor most needs to be able to find at a glance. */
.text-size-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-pill);
    padding: 0.45rem 1rem;
    background: var(--color-surface);
}
.text-size-icon { color: var(--color-text-muted); line-height: 1; }
.text-size-icon-small { font-size: 0.75rem; }
.text-size-icon-large { font-size: 1.35rem; font-weight: 700; color: var(--color-text); }
.text-size-control input[type="range"] {
    width: 76px;
    accent-color: var(--color-primary);
    cursor: pointer;
}
.text-size-output {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    min-width: 4.2em;
}

.app-footer {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    padding: 0.75rem 1.5rem 3rem;
}

/* ---------- Shared page shells ---------- */
.home-shell, .chooser-shell, .survey-shell, .results-shell {
    max-width: 880px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 1.5rem;
}

.survey-eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

.survey-subtitle { color: var(--color-text-muted); font-size: 1.05rem; }
.survey-meta { color: var(--color-text-muted); font-size: 0.9rem; }
.survey-footnote { color: var(--color-text-muted); font-size: 0.85rem; text-align: center; }
.survey-footnote-tight { margin: 0.5rem 0 0; }

/* ---------- Buttons ---------- */
.btn-primary, .btn-secondary {
    display: inline-block;
    font: inherit;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.8rem 1.75rem;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    border: 2px solid transparent;
    transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.15s ease, color 0.15s ease;
}
.btn-primary {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    box-shadow: var(--shadow-btn);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-btn-hover); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: default; transform: none; }

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-secondary:hover { background: var(--color-surface-alt); }

/* ---------- Home hub ---------- */
.home-hero {
    position: relative;
    text-align: center;
    padding: 3rem 1.5rem 3.5rem;
    margin-bottom: 0.5rem;
}
.home-hero::before {
    content: "";
    position: absolute;
    inset: -2rem -1.5rem auto -1.5rem;
    height: 16rem;
    background: radial-gradient(ellipse at center, rgba(var(--color-glow-rgb, 0, 0, 0), 0.14) 0%, transparent 70%);
    z-index: -1;
}
.home-hero h1 {
    font-size: clamp(1.9rem, 4vw, 2.75rem);
    margin-top: 0.5rem;
    background: linear-gradient(135deg, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tier-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 3rem;
}
@media (max-width: 800px) { .tier-grid { grid-template-columns: 1fr; } }

.tier-card {
    position: relative;
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.85rem 1.75rem 1.75rem;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.tier-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}
.tier-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-primary);
}
.tier-card:hover::before { transform: scaleX(1); }
.tier-badge {
    text-transform: uppercase;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin: 0;
}
.tier-card h2 { margin: 0; font-size: 1.3rem; }
.tier-card p:not(.tier-badge) { color: var(--color-text-muted); flex-grow: 1; }
.tier-card .btn-primary { margin-top: 0.5rem; }

.home-a11y-note {
    background: var(--color-surface-alt);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.75rem;
}
.home-a11y-note h2 { font-size: 1.1rem; }
.home-a11y-note p { margin: 0; color: var(--color-text-muted); }

/* ---------- Chooser ---------- */
.chooser-shell { text-align: center; }
.mode-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin: 2rem 0;
    text-align: left;
}
@media (max-width: 620px) { .mode-cards { grid-template-columns: 1fr; } }
.mode-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease, border-color 0.2s ease;
}
.mode-card:hover { transform: translateY(-3px); border-color: var(--color-primary); }
.mode-icon { font-size: 1.6rem; }
.mode-title { font-weight: 700; font-size: 1.1rem; }
.mode-desc { color: var(--color-text-muted); font-size: 0.9rem; }
.back-link { color: var(--color-text-muted); text-decoration: none; font-size: 0.9rem; }
.back-link:hover { color: var(--color-primary); }

/* ---------- Survey form ---------- */
.survey-head { text-align: center; padding-bottom: 1rem; }
.survey-head h1 { font-size: clamp(1.5rem, 3.5vw, 2.1rem); }

.form-error-summary {
    background: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.survey-step {
    position: relative;
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.25s ease;
}
.survey-step::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}
.step-title {
    font-size: 1.35rem;
    margin-bottom: 0.35rem;
    outline: none;
}
.step-description { color: var(--color-text-muted); font-size: 0.92rem; margin-bottom: 1.25rem; }

.q-block { margin-bottom: 1.5rem; }
.q-block:last-child { margin-bottom: 0; }

.q-fieldset { border: none; padding: 0; margin: 0; }
.q-legend, .q-label {
    display: block;
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 0.6rem;
    padding: 0;
}
.q-helper { color: var(--color-text-muted); font-size: 0.85rem; margin: -0.3rem 0 0.75rem; }
.req { color: var(--color-danger); margin-left: 0.15rem; }

/* One-question-per-page wizard: give the active question a little more room and presence than
   the dense single-page layout, since it's the sole focus of the screen. */
[data-mode="wizard"] .survey-step.active-step .q-block.active-question .q-legend,
[data-mode="wizard"] .survey-step.active-step .q-block.active-question .q-label {
    font-size: 1.2rem;
}

.museum-token { font-weight: 600; color: var(--color-primary); }

.choice-group { display: flex; flex-direction: column; gap: 0.6rem; }
.choice {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.12s ease, box-shadow 0.15s ease;
}
.choice:hover { border-color: var(--color-primary); transform: translateY(-1px); box-shadow: var(--shadow-card); }
.choice:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-tint);
    box-shadow: inset 0 0 0 1px var(--color-primary);
}
.choice input { accent-color: var(--color-primary); width: 1.15em; height: 1.15em; flex-shrink: 0; }

.q-select, .q-input, .q-textarea {
    width: 100%;
    max-width: 420px;
    font: inherit;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
}
.q-textarea { max-width: 100%; resize: vertical; }
.q-select:focus, .q-input:focus, .q-textarea:focus { border-color: var(--color-primary); }

.field-error {
    display: block;
    color: var(--color-danger);
    font-size: 0.82rem;
    margin-top: 0.3rem;
}
.field-error:empty { display: none; }

/* Rating scales */
.scale-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.scale-endlabel { font-size: 0.78rem; color: var(--color-text-muted); }
.scale-dot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}
.scale-dot input {
    width: 1.5rem; height: 1.5rem;
    accent-color: var(--color-primary);
}
.scale-row.nps { justify-content: space-between; }

/* Matrix / grid tables */
.matrix-scroll { overflow-x: auto; margin-top: 0.5rem; }
.matrix-table {
    border-collapse: collapse;
    width: 100%;
    min-width: 520px;
}
.matrix-table th, .matrix-table td {
    padding: 0.5rem 0.6rem;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.82rem;
}
.matrix-table thead th { color: var(--color-text-muted); font-weight: 600; }
.matrix-table th[scope="row"] {
    text-align: left;
    font-weight: 500;
    color: var(--color-text);
    min-width: 200px;
}
.matrix-table input[type="radio"] { accent-color: var(--color-primary); width: 1.15em; height: 1.15em; }
.matrix-row-header { min-width: 200px; }
.matrix-error { text-align: left; }

@media (max-width: 640px) {
    .matrix-table thead { display: none; }
    .matrix-table, .matrix-table tbody, .matrix-table tr, .matrix-table td { display: block; width: 100%; }
    .matrix-table tr { border-bottom: 2px solid var(--color-border); padding: 0.75rem 0; }
    .matrix-table th[scope="row"] { display: block; padding-bottom: 0.5rem; min-width: 0; }
    .matrix-table td {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        border: none;
        padding: 0.35rem;
        width: auto;
    }
    .matrix-table td:not(.matrix-error)::before { content: attr(data-col-label); font-size: 0.7rem; color: var(--color-text-muted); }
    .matrix-error { display: block; width: 100%; }
}

/* Dissatisfaction follow-up */
.followup-block {
    border-left: 3px solid var(--color-accent);
    padding-left: 1rem;
    margin-bottom: 1.25rem;
}
.followup-title { font-size: 1rem; margin-bottom: 0.75rem; }
.followup-category-name { color: var(--color-accent); }

.survey-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
}

/* Wizard */
.wizard-progress {
    display: block;
    width: 100%;
    height: 8px;
    margin: 1rem 0 0.5rem;
    border: none;
    border-radius: var(--radius-pill);
    overflow: hidden;
    appearance: none;
    -webkit-appearance: none;
}
.wizard-progress[value] { accent-color: var(--color-primary); }
.wizard-progress::-webkit-progress-bar { background: var(--color-surface-alt); border-radius: var(--radius-pill); }
.wizard-progress::-webkit-progress-value { background: var(--color-primary); border-radius: var(--radius-pill); transition: width 0.3s ease; }
.wizard-progress::-moz-progress-bar { background: var(--color-primary); border-radius: var(--radius-pill); transition: width 0.3s ease; }
.wizard-step-label {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    margin-bottom: 1.25rem;
}
[data-mode="wizard"] .survey-step { display: none; }
[data-mode="wizard"] .survey-step.active-step { display: block; animation: fade-up 0.35s cubic-bezier(0.16, 1, 0.3, 1) both; }

/* One question at a time: within the active section, only the active question shows (except
   the dissatisfaction follow-up section, which is intentionally shown as one combined step -
   see wizard.js/isAtomic - its content isn't wrapped in .q-block so this rule doesn't touch it). */
[data-mode="wizard"] .survey-step.active-step .q-block { display: none; }
[data-mode="wizard"] .survey-step.active-step .q-block.active-question {
    display: block;
    animation: fade-up 0.3s ease both;
}
[data-mode="wizard"] #survey-submit-btn { display: none; }
[data-mode="wizard"].on-last-step #survey-submit-btn { display: inline-block; }
[data-mode="wizard"].on-last-step #wizard-next { display: none; }

/* Results */
.results-shell { text-align: center; }
.results-icon {
    width: 3.5rem; height: 3.5rem;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 1rem;
}
.results-sections { text-align: left; margin: 2rem 0; display: flex; flex-direction: column; gap: 1.25rem; }
.results-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1.75rem;
}
.results-section h2 { font-size: 1.05rem; margin-bottom: 0.75rem; }
.results-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem 1rem; margin: 0; }
.results-list dt { color: var(--color-text-muted); font-size: 0.85rem; }
.results-list dd { margin: 0 0 0.5rem; font-weight: 500; }
@media (max-width: 620px) { .results-list { grid-template-columns: 1fr; } }
.results-actions { display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }