/**
 * Austin Public Library — Library Card Application
 * Based on City of Austin Official Brand Guidelines
 *
 * @version 2.0.1
 * @author Alex Nguyen
 */

/* =============================================================================
   CSS Custom Properties (Design Tokens) — COA palette
   ============================================================================= */
:root {
    /* City of Austin Official Palette */
    --coa-blue: #44499C;
    --coa-blue-dark: #22254E;
    --coa-blue-light: #dcf2fd;

    --coa-green: #009F4D;
    --coa-green-dark: #005027;
    --coa-green-light: #dff0e3;
    --coa-green-compliant: #008743;   /* WCAG AA on white */

    --coa-white: #f7f6f5;
    --coa-gray-light: #C6C5C4;
    --coa-gray: #636262;
    --coa-black: #000000;

    --coa-red: #F83125;
    --coa-orange: #FF8F00;
    --coa-yellow: #FFC600;
    --coa-cyan: #009CDE;

    /* Functional aliases */
    --color-primary: var(--coa-green-compliant);
    --color-primary-dark: var(--coa-green-dark);
    --color-primary-light: var(--coa-green-light);
    --color-bg: var(--coa-white);
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: var(--coa-gray);
    --color-border: #929292;               /* WCAG fix: #d4d4d4→#929292 = 3.11:1 UI component */
    --color-error: var(--coa-red);
    --color-error-bg: #fef2f2;
    --color-success: var(--coa-green-compliant);
    --color-success-bg: var(--coa-green-light);

    /* Typography */
    --font-family: 'Source Sans 3', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.375rem;
    --font-size-2xl: 1.75rem;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.7;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Radius & Shadows */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* =============================================================================
   Reset & Base
   ============================================================================= */
*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); }
a:hover { color: var(--color-primary-dark); }

/* =============================================================================
   Layout
   ============================================================================= */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    width: 100%;
    max-width: 820px;
    margin: var(--space-xl) auto;
    padding: 0 var(--space-md);
}

/* =============================================================================
   Header (matches pin-reset)
   ============================================================================= */
.site-header {
    background: var(--coa-blue);
    color: #ffffff;
    box-shadow: var(--shadow-md);
}
.header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}
.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: #ffffff;
}
.logo-img {
    height: 42px;
    width: auto;
}
.logo-text {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}
.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}
.header-nav a {
    font-size: var(--font-size-sm);
    text-decoration: none;
    color: #ffffff;                        /* WCAG fix: 0.85→1.0 = 7.84:1 on #44499C */
    transition: color var(--transition-fast);
}
.header-nav a:hover { color: #ffffff; }
.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid rgba(255,255,255,0.55); /* WCAG fix: 0.4→0.55 = 3.59:1 UI component */
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm) !important;
    color: #ffffff !important;
}
.lang-switch:hover {
    border-color: #ffffff;
    background: rgba(255,255,255,0.1);
}

/* =============================================================================
   Card (matches pin-reset)
   ============================================================================= */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}
.card-body {
    padding: var(--space-xl);
}

/* =============================================================================
   Step Indicator
   ============================================================================= */
.steps-indicator {
    display: flex;
    background: var(--coa-blue);
    padding: 0;
    overflow-x: auto;
}
.step-item {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-sm);
    color: rgba(255,255,255,0.70);        /* WCAG fix: 0.45→0.70 = 4.76:1 on #44499C */
    font-size: var(--font-size-sm);
    text-align: center;
    white-space: nowrap;
    position: relative;
    transition: background var(--transition-base);
}
.step-item.step-active {
    background: var(--color-primary);
    color: #fff;
    font-weight: var(--font-weight-semibold);
}
.step-item.step-complete {
    color: rgba(255,255,255,0.90);        /* WCAG fix: 0.75→0.90 = 6.68:1 on #44499C */
}
.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid currentColor;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}
.step-active .step-number {
    background: #fff;
    color: var(--color-primary);
    border-color: #fff;
}
.step-complete .step-number {
    border-color: rgba(255,255,255,0.5);
}

/* =============================================================================
   Section heading
   ============================================================================= */
.section-heading {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--coa-blue-dark);
    margin: 0 0 var(--space-lg);
    line-height: 1.2;
}

/* =============================================================================
   Prose (rich text blocks)
   ============================================================================= */
.prose { line-height: var(--line-height-relaxed); }
.prose p { margin: 0 0 var(--space-md); }
.prose ol, .prose ul { margin: 0 0 var(--space-md); padding-left: var(--space-xl); }
.prose li { margin-bottom: var(--space-sm); }

/* =============================================================================
   Alerts (matches pin-reset)
   ============================================================================= */
.alert {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border-left: 4px solid;
}
.alert-icon { flex-shrink: 0; margin-top: 2px; }
.alert-error {
    background: var(--color-error-bg);
    border-color: var(--color-error);
    color: #991b1b;
}
.alert-error .alert-icon { color: var(--color-error); }
.alert-success {
    background: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--coa-green-dark);
}
.alert-success .alert-icon { color: var(--color-success); }
.alert-heading {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-xs);
}
.alert-text { margin: 0; }

/* =============================================================================
   Forms (matches pin-reset patterns)
   ============================================================================= */
.form-section {
    border: none;
    padding: 0;
    margin: 0 0 var(--space-xl);
}
.form-section legend {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--coa-blue-dark);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-primary-light);
    width: 100%;
}
.form-section legend .hint {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-muted);
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md) var(--space-lg);
}
.form-group {
    margin-bottom: var(--space-md);
}
.form-group-wide {
    grid-column: 1 / -1;
}
.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}
.required-star {
    color: var(--color-error);
}
.form-input,
.form-select {
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}
.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 135, 67, 0.15);
}
.form-input-short {
    max-width: 160px;
}
.form-input-date {
    max-width: 220px;
}
.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23636262' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 2rem;
}
.form-hint {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* Password toggle (matches pin-reset) */
.input-with-toggle {
    position: relative;
}
.input-with-toggle .form-input {
    padding-right: 3rem;
}
.toggle-password {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 4px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.toggle-password:hover { color: var(--color-primary); }
.toggle-password:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Checkbox */
.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}
.form-group-checkbox input[type="checkbox"] {
    margin-top: 3px;
    accent-color: var(--color-primary);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}
.form-group-checkbox label {
    margin-bottom: 0;
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
}

/* Agreement text */
.agreement-text {
    background: var(--color-bg);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
    max-height: 200px;
    overflow-y: auto;
}

/* =============================================================================
   Buttons (matches pin-reset)
   ============================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.5rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-primary {
    color: #ffffff;
    background-color: var(--color-primary);
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
}
.btn-primary:active:not(:disabled) {
    transform: translateY(1px);
}
.btn-secondary {
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border);
}
.btn-secondary:hover:not(:disabled) {
    background-color: var(--coa-white);
    border-color: var(--coa-gray);
}
.btn-lg {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-lg);
}
.form-actions {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}
.form-actions-split {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
}
.inline-form { display: inline; }

.form-inline-start {
    margin-top: var(--space-lg);
}
.form-row-inline {
    display: flex;
    align-items: flex-end;
    gap: var(--space-md);
    flex-wrap: wrap;
}
.form-row-inline .form-group {
    margin-bottom: 0;
}
.form-row-inline .form-select {
    min-width: 200px;
}

/* =============================================================================
   Confirmation (Step 3)
   ============================================================================= */
.confirm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}
.confirm-section-heading {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--coa-blue-dark);
    margin: var(--space-lg) 0 var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 2px solid var(--color-primary-light);
}
.confirm-section-heading:first-child { margin-top: 0; }
.confirm-list {
    margin: 0;
    padding: 0;
}
.confirm-list dt {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}
.confirm-list dd {
    margin: 0;
    font-weight: var(--font-weight-semibold);
}

/* =============================================================================
   Footer
   ============================================================================= */
.site-footer {
    text-align: center;
    padding: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
}

/* =============================================================================
   Screen reader only
   ============================================================================= */
.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;
}

/* =============================================================================
   Kiosk Mode
   ============================================================================= */
.redirect-notice {
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}
.redirect-notice #countdown {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* =============================================================================
   Responsive
   ============================================================================= */
@media (max-width: 768px) {
    .header-inner { flex-direction: column; align-items: flex-start; }
    .header-nav { gap: var(--space-md); }
    .form-grid-2 { grid-template-columns: 1fr; }
    .confirm-grid { grid-template-columns: 1fr; }
    .card-body { padding: var(--space-lg); }
    .steps-indicator { overflow-x: auto; }
    .step-label { font-size: 0.75rem; }
    .form-actions-split { flex-direction: column-reverse; gap: var(--space-sm); }
    .form-actions-split .btn { width: 100%; }
}

@media (max-width: 480px) {
    .main-content { margin: var(--space-md) auto; }
    .card-body { padding: var(--space-md); }
    .step-label { display: none; }
    .step-item { padding: var(--space-sm); }
    .form-input-short { max-width: 100%; }
}

/* =============================================================================
   High Contrast
   ============================================================================= */
@media (prefers-contrast: high) {
    :root { --color-border: #000; }
    .form-input, .form-select { border-width: 3px; }
    .btn { border: 2px solid currentColor; }
}

/* =============================================================================
   Reduced Motion
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* =============================================================================
   Print
   ============================================================================= */
@media print {
    .site-header, .site-footer, .lang-switch, .btn, .form-actions { display: none; }
    .main-content { padding: 0; max-width: 100%; }
    .card { box-shadow: none; border: 1px solid #000; }
}