/* =========================================================
   Accessible, blind-user-first stylesheet.
   - WCAG 2.2 AA contrast targets
   - Visible :focus-visible rings on every interactive element
   - Respects prefers-reduced-motion and prefers-color-scheme
   - High-contrast and font-scale preferences via data attributes
     on <html> (toggled by the accessibility toolbar)
   ========================================================= */

:root {
    --color-bg: #ffffff;
    --color-surface: #f6f7fb;
    --color-text: #0b1020;
    --color-muted: #4a5568;
    --color-border: #d1d5db;
    --color-border-strong: #6b7280;
    --color-primary: #1d4ed8;
    --color-primary-contrast: #ffffff;
    --color-primary-hover: #1e40af;
    --color-focus: #f59e0b;
    --color-danger: #b91c1c;
    --color-danger-bg: #fef2f2;
    --color-success: #166534;
    --color-success-bg: #ecfdf5;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-8: 3rem;

    --font-base: 1rem;
    --font-scale: 1;

    --container-max: 72rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0b1020;
        --color-surface: #111a33;
        --color-text: #f4f6fb;
        --color-muted: #c0c7d6;
        --color-border: #374151;
        --color-border-strong: #94a3b8;
        --color-primary: #93c5fd;
        --color-primary-contrast: #0b1020;
        --color-primary-hover: #bfdbfe;
        --color-focus: #fcd34d;
        --color-danger: #fecaca;
        --color-danger-bg: #3f1d1d;
        --color-success: #bbf7d0;
        --color-success-bg: #0f3b25;
    }
}

html[data-contrast="high"] {
    --color-bg: #000000;
    --color-surface: #000000;
    --color-text: #ffffff;
    --color-muted: #ffffff;
    --color-border: #ffffff;
    --color-border-strong: #ffffff;
    --color-primary: #ffff00;
    --color-primary-contrast: #000000;
    --color-primary-hover: #ffffff;
    --color-focus: #ffff00;
    --color-danger: #ffff00;
    --color-danger-bg: #000000;
    --color-success: #ffff00;
    --color-success-bg: #000000;
}

html {
    font-size: calc(100% * var(--font-scale));
    -webkit-text-size-adjust: 100%;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: var(--font-base);
    line-height: 1.55;
    color: var(--color-text);
    background: var(--color-bg);
}

a {
    color: var(--color-primary);
    text-underline-offset: 2px;
}

a:hover, a:focus-visible { color: var(--color-primary-hover); }

:focus { outline: none; }

:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Audio cursor: visible marker of where the voice guide is currently "reading".
   Applied by the voice-guide Stimulus controller whenever voice is on. */
[data-audio-cursor="true"] {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.18);
    scroll-margin-block: var(--space-6);
}

html[data-contrast="high"] [data-audio-cursor="true"] {
    box-shadow: 0 0 0 6px #ffff00;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-link {
    position: absolute;
    left: var(--space-2);
    top: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transform: translateY(-200%);
    z-index: 1000;
}

.skip-link:hover,
.skip-link:focus-visible {
    background: var(--color-primary-hover);
    color: var(--color-primary-contrast);
    transform: translateY(0);
}

.layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-5) var(--space-4);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
    flex-wrap: wrap;
}

.site-header .brand {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-text);
    text-decoration: none;
}

.site-header .brand:focus-visible,
.site-header .brand:hover { color: var(--color-primary); }

.primary-nav ul {
    display: flex;
    gap: var(--space-4);
    margin: 0;
    padding: 0;
    list-style: none;
    flex-wrap: wrap;
}

.primary-nav a {
    display: inline-block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
    color: var(--color-primary);
    background: var(--color-surface);
}

.primary-nav a[aria-current="page"] {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
}

.primary-nav a[aria-current="page"]:hover,
.primary-nav a[aria-current="page"]:focus-visible {
    background: var(--color-primary-hover);
    color: var(--color-primary-contrast);
}

main {
    flex: 1;
    outline: none;
}

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

.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.9rem;
}

.site-footer .container { padding-block: var(--space-4); }

h1, h2, h3, h4 {
    line-height: 1.2;
    margin-block: 0 var(--space-3);
    color: var(--color-text);
}

h1 { font-size: clamp(1.75rem, 1.25rem + 1.5vw, 2.5rem); }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

p { margin-block: 0 var(--space-4); }

.lede { font-size: 1.125rem; color: var(--color-muted); }

/* ---------- Flash / alert live regions ---------- */

.flashes {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.flash {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.flash--success {
    background: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--color-success);
}

.flash--error,
.flash--danger {
    background: var(--color-danger-bg);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* ---------- Forms ---------- */

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.form-field label {
    font-weight: 600;
}

.required-mark {
    color: var(--color-danger);
    margin-left: 2px;
    text-decoration: none;
    cursor: help;
}

.field-help {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.field-errors {
    list-style: none;
    padding-left: 0;
    margin: 0;
    color: var(--color-danger);
}

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="date"], input[type="search"], input[type="url"],
textarea, select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font: inherit;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
}

textarea { min-height: 8rem; resize: vertical; }

input[aria-invalid="true"], textarea[aria-invalid="true"], select[aria-invalid="true"] {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 1px var(--color-danger);
}

fieldset {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin: 0 0 var(--space-5);
}

legend {
    font-weight: 600;
    padding: 0 var(--space-2);
}

.choice-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.choice-list label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 400;
}

/* Multiple free-text answers (CollectionType) */
.collection-entries {
    border: 0;
    padding: 0;
    margin: 0;
    min-inline-size: 0;
}

.collection-entries__legend {
    font-weight: 600;
    margin-bottom: var(--space-3);
    padding: 0;
}

.collection-entries__list {
    list-style: none;
    margin: 0 0 var(--space-3);
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.collection-entries__item {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.collection-entries__item > input,
.collection-entries__item > textarea,
.collection-entries__item > select {
    flex: 1 1 12rem;
    min-width: 0;
}

.collection-entries__item > .field-errors {
    flex: 1 0 100%;
}

.collection-entries__remove {
    flex: 0 0 auto;
    margin-top: var(--space-1);
    min-height: 2.5rem;
    min-width: 2.5rem;
    padding: 0 var(--space-2);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
}

.collection-entries__remove:hover,
.collection-entries__remove:focus-visible {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.collection-entries__add {
    margin-top: var(--space-1);
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    min-height: 2.75rem;
    background: var(--color-primary);
    color: var(--color-primary-contrast);
}

.btn:hover,
.btn:focus-visible {
    background: var(--color-primary-hover);
    color: var(--color-primary-contrast);
}

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

.btn--secondary:hover,
.btn--secondary:focus-visible {
    background: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-primary);
}

.btn--link {
    background: transparent;
    color: var(--color-primary);
    border-color: transparent;
    padding-inline: var(--space-2);
}

.btn--link:hover,
.btn--link:focus-visible {
    background: transparent;
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-5);
}

/* ---------- Cards / lists ---------- */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.card + .card { margin-top: var(--space-4); }

.card-grid {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
    list-style: none;
    padding: 0;
    margin: 0;
}

.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-link:hover,
.card-link:focus-visible {
    color: inherit;
}

.card-link .card:hover,
.card-link:focus-visible .card {
    border-color: var(--color-primary);
}

/* ---------- Hero ---------- */

.hero {
    padding-block: var(--space-6) var(--space-5);
}

.hero h1 { margin-bottom: var(--space-3); }

/* ---------- Tables ---------- */

.submissions-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.submissions-table caption {
    caption-side: top;
    padding: var(--space-3);
    font-weight: 600;
    text-align: left;
}

.submissions-table th,
.submissions-table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.submissions-table tr:last-child td { border-bottom: 0; }

/* ---------- Error summary ---------- */

.error-summary {
    background: var(--color-danger-bg);
    border: 2px solid var(--color-danger);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-5);
}

.error-summary h2 {
    margin-top: 0;
    color: var(--color-danger);
}

.error-summary ol {
    margin: 0;
    padding-left: var(--space-5);
    color: var(--color-danger);
}

.error-summary a {
    color: var(--color-danger);
    font-weight: 600;
}

/* ---------- Accessibility toolbar ---------- */

.a11y-toolbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-3);
    position: sticky;
    top: 0;
    z-index: 50;
}

.a11y-toolbar__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    row-gap: var(--space-2);
    column-gap: var(--space-2);
    align-items: center;
}

.a11y-toolbar button,
.a11y-toolbar a.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    min-height: 2.25rem;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.925rem;
    cursor: pointer;
    white-space: nowrap;
}

.a11y-toolbar button:hover,
.a11y-toolbar a.btn:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
}

.a11y-toolbar button[aria-pressed="true"] {
    background: var(--color-primary);
    color: var(--color-primary-contrast);
    border-color: var(--color-primary);
}

.a11y-toolbar__label {
    font-weight: 600;
    margin-right: var(--space-2);
    color: var(--color-muted);
}

html[data-voice="off"] .a11y-toolbar {
    background: var(--color-bg);
}

.keyboard-help {
    max-width: 32rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    background: var(--color-bg);
    color: var(--color-text);
}

.keyboard-help::backdrop {
    background: rgba(0, 0, 0, 0.6);
}

.keyboard-help dl {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: var(--space-2) var(--space-4);
    margin: var(--space-3) 0;
}

.keyboard-help dt {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 600;
}

.keyboard-help kbd {
    display: inline-block;
    border: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    padding: 0 var(--space-2);
    font-family: inherit;
}

/* ---------- Post-submit / choice list ---------- */

.choice-cards {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    list-style: none;
    padding: 0;
    margin: 0;
}

/* ---------- Registration phone + OTP ---------- */

.registration-phone-otp {
    margin-bottom: var(--space-5);
}

.registration-phone-otp > .form-field:first-of-type {
    margin-bottom: var(--space-3);
}

.registration-phone-otp > .form-field--otp {
    margin-bottom: var(--space-5);
}

.registration-phone-otp__send {
    margin: 0 0 var(--space-3);
}

.registration-phone-otp__send-btn {
    width: 100%;
    justify-content: center;
}

@media (min-width: 30rem) {
    .registration-phone-otp__send-btn {
        width: auto;
        min-width: min(100%, 14rem);
        justify-content: center;
    }
}

.registration-phone-otp__status {
    min-height: 1.35rem;
    margin: 0 0 var(--space-4);
    font-size: 0.925rem;
    line-height: 1.4;
    color: var(--color-muted);
}

.registration-phone-otp__status.field-status--error {
    color: var(--color-danger);
    font-weight: 600;
}

.registration-phone-otp > .form-field--otp input {
    max-width: 12rem;
    letter-spacing: 0.12em;
    font-variant-numeric: tabular-nums;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
