/* Phase 12 Design System — tokens + base + component classes.
   Shared across Admin (Blazor Server) and Client (WASM) via RCL static web assets.
   Per D-11 no component CSS file may contain hex literals — everything resolves here. */

:root {
    /* Spacing scale */
    --space-0: 0;
    --space-1: 0.25rem;  /* 4px */
    --space-2: 0.5rem;   /* 8px */
    --space-3: 0.75rem;  /* 12px */
    --space-4: 1rem;     /* 16px */
    --space-5: 1.5rem;   /* 24px */
    --space-6: 2rem;     /* 32px */
    --space-7: 3rem;     /* 48px */
    --space-8: 4rem;     /* 64px */

    /* Type scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;

    --leading-tight: 1.2;
    --leading-normal: 1.5;
    --leading-loose: 1.7;

    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Surfaces */
    --surface-primary: #ffffff;
    --surface-secondary: #f8f9fc;
    --surface-tertiary: #f0f2f7;

    /* Text */
    --text-primary: #1a1d29;
    --text-secondary: #4a5065;
    --text-muted: #6b7280;

    /* Borders */
    --border-subtle: #e5e7ef;
    --border-strong: #cfd3df;

    /* Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.12);
    --shadow-hover: 0 6px 16px rgba(15, 23, 42, 0.12);

    /* Semantic */
    --success: #059669;
    --success-bg: #ecfdf5;
    --success-fg: #065f46;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --warning-fg: #92400e;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --danger-fg: #991b1b;
    --info: #0284c7;
    --info-bg: #f0f9ff;
    --info-fg: #075985;

    /* Motion (declared, sparingly used) */
    --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
    --dur-fast: 120ms;
    --dur-base: 200ms;

    /* Z-index */
    --z-nav: 100;
    --z-modal-backdrop: 900;
    --z-modal: 1000;
    --z-toast: 1100;

    /* Focus ring (with fallback below) */
    --focus-ring: 0 0 0 3px color-mix(in srgb, var(--brand-accent-focus, #2572FB) 40%, transparent);

    /* Breakpoints (reference only — use in media queries directly) */
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
}

@supports not (color: color-mix(in srgb, red, blue)) {
    :root { --focus-ring: 0 0 0 3px rgba(37, 140, 251, 0.4); }
}

/* ============ Base resets ============ */

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--surface-secondary);
    line-height: var(--leading-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

a {
    color: var(--brand-accent);
}

/* ============ Component classes (Plan 12-02) ============
   Full rule bodies for every ds-* class. Every property resolves to a token. */

/* Page shell */
.ds-page {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-5) var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.ds-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.ds-page-header h1 {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: var(--weight-regular);
    color: var(--text-primary);
    line-height: var(--leading-tight);
    margin: 0;
}

/* Card */
.ds-card {
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}

.ds-card--compact {
    padding: var(--space-4);
}

/* Button */
.ds-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-tight);
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out);
}

.ds-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.ds-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.ds-btn--primary {
    background: var(--brand-accent);
    color: var(--surface-primary);
    border-color: var(--brand-accent-border);
}

.ds-btn--primary:hover:not(:disabled) {
    background: var(--brand-accent-hover);
}

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

.ds-btn--secondary:hover:not(:disabled) {
    background: var(--surface-tertiary);
}

.ds-btn--danger {
    background: var(--danger);
    color: var(--surface-primary);
    border-color: var(--danger);
}

.ds-btn--danger:hover:not(:disabled) {
    background: var(--danger-fg);
    border-color: var(--danger-fg);
}

.ds-btn--ghost {
    background: transparent;
    color: var(--brand-accent);
    border-color: transparent;
}

.ds-btn--ghost:hover:not(:disabled) {
    background: var(--surface-tertiary);
}

.ds-btn--sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    min-height: 2rem;
}

.ds-btn--md {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    min-height: 2.5rem;
}

.ds-btn--lg {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-base);
    min-height: 2.75rem;
}

/* Badge */
.ds-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-tight);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.ds-badge--neutral {
    background: var(--surface-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-subtle);
}

.ds-badge--success {
    background: var(--success-bg);
    color: var(--success-fg);
    border-color: var(--success-bg);
}

.ds-badge--warning {
    background: var(--warning-bg);
    color: var(--warning-fg);
    border-color: var(--warning-bg);
}

.ds-badge--danger {
    background: var(--danger-bg);
    color: var(--danger-fg);
    border-color: var(--danger-bg);
}

.ds-badge--info {
    background: var(--info-bg);
    color: var(--info-fg);
    border-color: var(--info-bg);
}

.ds-badge--brand {
    background: var(--surface-primary);
    color: var(--brand-accent);
    border-color: var(--brand-accent);
}

/* Field (Input) */
.ds-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-family: var(--font-body);
}

.ds-field__label {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.ds-field__input {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    padding: var(--space-3);
    background: var(--surface-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    min-height: 2.5rem;
}

.ds-field__input:focus-visible {
    outline: none;
    border-color: var(--brand-accent);
    box-shadow: var(--focus-ring);
}

.ds-field__hint {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--text-muted);
    line-height: var(--leading-normal);
}

.ds-field__error {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--danger);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-normal);
}

/* Table */
.ds-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.ds-table thead th {
    text-align: left;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--text-secondary);
    background: var(--surface-secondary);
    border-bottom: 1px solid var(--border-subtle);
}

.ds-table tbody td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.ds-table tbody tr:last-child td {
    border-bottom: none;
}

.ds-table-row-clickable {
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-out);
}

.ds-table-row-clickable:hover {
    background: var(--surface-tertiary);
}

.ds-table-row-clickable:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Empty state */
.ds-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-7) var(--space-5);
    color: var(--text-secondary);
    text-align: center;
}

/* Skeleton */
.ds-skeleton {
    background: var(--surface-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.ds-skeleton--row {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
}

.ds-skeleton__cell {
    display: block;
    height: var(--space-4);
    background: var(--surface-tertiary);
    border-radius: var(--radius-sm);
    animation: ds-skeleton-pulse 1.4s ease-in-out infinite;
}

@keyframes ds-skeleton-pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Error panel */
.ds-error-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6) var(--space-5);
    background: var(--danger-bg);
    color: var(--danger-fg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    text-align: center;
}

/* Filter chip */
.ds-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--surface-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out);
}

.ds-filter-chip:hover {
    background: var(--surface-tertiary);
}

.ds-filter-chip:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.ds-filter-chip--active {
    background: var(--brand-accent);
    color: var(--surface-primary);
    border-color: var(--brand-accent-border);
}

/* Modal */
.ds-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    z-index: var(--z-modal-backdrop);
}

.ds-modal-card {
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 560px;
    width: 100%;
    z-index: var(--z-modal);
}

.ds-modal-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
}

.ds-modal-card__body {
    padding: var(--space-5);
    color: var(--text-primary);
}

.ds-modal-card__actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-subtle);
}

/* Avatar */
.ds-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--surface-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-weight: var(--weight-semibold);
    line-height: 1;
}

.ds-avatar--sm {
    width: var(--space-6);
    height: var(--space-6);
    font-size: var(--text-sm);
}

.ds-avatar--md {
    width: var(--space-7);
    height: var(--space-7);
    font-size: var(--text-base);
}

.ds-avatar--lg {
    width: var(--space-8);
    height: var(--space-8);
    font-size: var(--text-xl);
}

/* Tabs */
.ds-tabs {
    display: flex;
    gap: var(--space-2);
    border-bottom: 1px solid var(--border-subtle);
}

.ds-tabs__tab {
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out);
}

.ds-tabs__tab:hover {
    color: var(--text-primary);
}

.ds-tabs__tab:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.ds-tabs__tab--active {
    color: var(--brand-accent);
    border-bottom-color: var(--brand-accent);
}

/* Step indicator */
.ds-step-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    overflow-x: auto;
}

.ds-step {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    line-height: var(--leading-tight);
}

.ds-step--current {
    color: var(--brand-accent);
    border-bottom-color: var(--brand-accent);
}

.ds-step--done {
    color: var(--success-fg);
}

/* Auth card (moved from per-app app.css, re-tokenised) */
.auth-page {
    min-height: calc(100vh - 3.5rem);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-7) var(--space-4);
    background: var(--surface-secondary);
}

.auth-card {
    max-width: 420px;
    width: 100%;
    padding: var(--space-6);
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.auth-card__hero {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: var(--weight-regular);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin: 0 0 var(--space-4);
}

.auth-card__subheading {
    color: var(--text-secondary);
    margin: 0 0 var(--space-5);
    line-height: var(--leading-normal);
}

.auth-card__info {
    background: var(--info-bg);
    color: var(--info-fg);
    border: 1px solid var(--info-bg);
    border-radius: var(--radius-sm);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
}

.auth-card__form > * + * {
    margin-top: var(--space-4);
}

.auth-card__actions {
    margin-top: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    align-items: stretch;
}

.auth-card__link {
    text-align: center;
    font-size: var(--text-sm);
}

/* ============ Onboarding chapter palette (Phase 13 v2 layout) ============
   Per-chapter accent rail colours on the unified onboarding panel.
   Muted, desaturated, professional. WCAG AA at --text-lg label size.
   Tenants override via app.css the same way they override --brand-accent. */

:root {
    --ob-chapter-1: #0071c1;   /* About you        — brand-accent blue */
    --ob-chapter-2: #0f766e;   /* Your home        — teal */
    --ob-chapter-3: #b45309;   /* Your partner     — warm amber */
    --ob-chapter-4: #4338ca;   /* Work & money     — indigo */
    --ob-chapter-5: #166534;   /* Property & loan  — forest */
    --ob-chapter-6: #475569;   /* Review & submit  — slate */
}

/* ============ .ds-input — global form-control fallback ============
   Applies to any raw <input class="ds-input">, <select class="ds-input">,
   <textarea class="ds-input"> that hasn't migrated to <DsField>/<DsSelect>/<DsTextarea>.
   Matches the .ds-field__input visual contract byte-for-byte so mixed-markup pages
   still look uniform. Safe on scoped pages — scoped rules always win. */

.ds-input {
    font-family: var(--font-body, 'Plus Jakarta Sans', system-ui, sans-serif);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    min-height: 48px;
    width: 100%;
    max-width: 480px;
    box-sizing: border-box;
    transition: border-color var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out);
}

.ds-input::placeholder {
    color: var(--text-muted);
}

.ds-input:hover:not(:disabled) {
    border-color: var(--border-strong);
}

.ds-input:focus-visible,
.ds-input:focus {
    outline: none;
    border-color: var(--brand-accent, #0071c1);
    box-shadow: var(--focus-ring);
}

.ds-input:disabled {
    background: var(--surface-tertiary);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* Textarea variant — vertical resize, taller min-height */
textarea.ds-input {
    resize: vertical;
    min-height: 96px;
    line-height: var(--leading-normal);
}

/* Select variant — strip native chrome, paint branded chevron */
select.ds-input {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    padding-right: calc(var(--space-4) + 20px);
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'><path d='M3 4.5l3 3 3-3' stroke='%230071c1' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    background-size: 12px 12px;
}

select.ds-input::-ms-expand {
    display: none;
}

/* Mobile — 44px touch target, full-bleed width */
@media (max-width: 640px) {
    .ds-input {
        min-height: 44px;
        padding: var(--space-3);
        max-width: 100%;
    }
    select.ds-input {
        padding-right: calc(var(--space-3) + 20px);
    }
    textarea.ds-input {
        min-height: 88px;
    }
}