/* CensusGreeter Common Stylesheet
 * Extracted from index.html for reuse across all pages
 */

:root {
    --primary: var(--color-gray-900);
    --secondary: var(--color-gray-700);
    --accent: var(--color-primary);
    --accent-glow: var(--color-primary-focus);
    --accent-hover: var(--color-primary-hover);
    --success: var(--color-sage);
    --success-dark: var(--color-sage-hover);
    --warning: var(--color-amber);
    --warning-dark: var(--color-amber-dark);
    --danger: var(--color-error);
    --danger-dark: var(--color-error);
    --success-bg: var(--color-sage-light);
    --success-light: var(--color-sage-light);
    --success-light-bg: var(--color-sage-light);
    --success-text: var(--color-sage);
    --accent-bg: var(--color-primary-light);
    --accent-light: var(--color-primary-light);
    --accent-dark: var(--color-primary-hover);
    --violet: var(--color-primary);
    --text-dark: var(--color-gray-600);
    --surface: #FFFFFF;
    --surface-secondary: var(--color-bg);
    --text-main: var(--color-gray-900);
    --text-muted: var(--color-gray-500);
    --border: var(--color-gray-200);
    --border-hover: var(--color-gray-300);
    --danger-bg: var(--color-error-light);
    --danger-text: var(--color-error);
    --warning-bg: var(--color-amber-light);
    --warning-text: var(--color-amber-dark);
    --primary-light: var(--color-gray-800);
    --surface-alpha-10: rgba(255, 255, 255, 0.1);
    --surface-alpha-80: rgba(255, 255, 255, 0.8);
    --surface-alpha-85: rgba(255, 255, 255, 0.85);
    --success-gradient-start: var(--color-sage-light);
    --success-gradient-mid: var(--color-sage-light);
    --accent-gradient-end: var(--color-primary-light);
    --text-secondary: var(--color-gray-400);
    --surface-tertiary: var(--color-gray-100);

    /* Spacing & Layout */
    --container-width: 1200px;
    --header-height: 80px;

    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 40px;
    --space-4xl: 60px;
    --space-5xl: 80px;
    --space-6xl: 100px;

    /* Semantic Spacing */
    --section-padding: 100px 0;
    --card-padding: 32px;
    --grid-gap: 32px;
    --stack-gap: 16px;

    /* Typography Scale */
    --font-size-h1: clamp(2.25rem, 5vw, 3.5rem);
    --font-size-h2: clamp(1.75rem, 3.5vw, 2.5rem);
    --font-size-h3: clamp(1.25rem, 2.5vw, 1.75rem);
    --font-size-h4: 1.25rem;
    --font-size-body: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.75rem;

    /* Effects */
    --shadow-sm: var(--shadow-1);
    --shadow-md: var(--shadow-2);
    --shadow-lg: var(--shadow-3);
    --shadow-glow: 0 0 20px rgba(53, 75, 150, 0.2);
    --focus-ring: 0 0 0 3px var(--color-primary-light);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Source Sans 3', sans-serif;
    background-color: var(--surface);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-gray-900);
}

h1 { margin-bottom: var(--space-xl); }
h2 { margin-bottom: var(--space-lg); }
h3 { margin-bottom: var(--space-lg); }

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

ul { list-style: none; }

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    transition: all var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(53, 75, 150, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(53, 75, 150, 0.4);
    background: var(--color-primary-hover);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border);
    color: var(--text-main);
}

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

/* Button Size Variants */
.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

.btn-md {
    padding: 12px 28px;
    font-size: 15px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: var(--font-size-body);
}

/* Focus States */
.btn:focus,
a:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
}

.btn:focus-visible,
a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Tags */
.tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 22px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo svg {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:hover { color: var(--color-primary); }

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 42px;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all var(--transition-slow);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* Forms */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--secondary);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text-main);
    background: white;
    transition: all var(--transition-base);
    font-family: 'Source Sans 3', sans-serif;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--focus-ring);
}

/* Check Icons */
.check-icon {
    color: var(--success);
    flex-shrink: 0;
}

/* Logo text fill */
.logo-text {
    fill: var(--surface);
}

/* Footer */
footer {
    background: var(--surface);
    padding: 80px 0 40px 0;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    font-weight: 800;
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 16px;
    display: block;
}

.footer-col h4 {
    font-size: 14px;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    margin-bottom: 12px;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-col a:hover {
    color: var(--accent);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    h1 { font-size: 32px; }
    h2 { font-size: 28px; }
    .footer-grid { grid-template-columns: 1fr; }
}

/* === Shared Site Navigation === */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
}
.site-header .nav-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-pad, 24px);
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.site-header .brand {
    font: 700 1.375rem var(--font-display);
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}
.site-header .brand:visited { color: var(--color-primary); }
.site-header .nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}
.site-header .nav-links a {
    font: var(--text-label);
    color: var(--color-gray-600);
    text-decoration: none;
    transition: color 150ms ease;
}
.site-header .nav-links a:visited { color: var(--color-gray-600); }
.site-header .nav-links a:hover,
.site-header .nav-links a[aria-current="page"] {
    color: var(--color-primary);
}
.site-header .nav-links a[aria-current="page"]:visited { color: var(--color-primary); }
.site-header .nav-cta {
    display: inline-flex;
    align-items: center;
    padding: var(--btn-pad-y) var(--btn-pad-x);
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font: var(--text-label);
    font-weight: 600;
    transition: background 150ms ease;
    min-height: 44px;
}
.site-header .nav-cta:visited { color: #fff; }
.site-header .nav-cta:hover {
    background: var(--color-primary-hover);
}

/* Hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--color-gray-700);
}
.hamburger svg { display: block; }

/* Mobile nav */
@media (max-width: 768px) {
    .site-header .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-gray-200);
        box-shadow: var(--shadow-2);
    }
    .site-header .nav-links.open { display: flex; }
    .site-header .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--color-gray-100);
        width: 100%;
    }
    .site-header .nav-links .nav-cta-mobile {
        margin-top: 12px;
        text-align: center;
        padding: 14px;
        background: var(--color-primary);
        color: #fff;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .site-header .nav-links .nav-cta-mobile:visited { color: #fff; }
    .hamburger { display: block; }
    .site-header .nav-cta { display: none; }
}

/* === Shared Site Footer === */
.site-footer {
    background: #fff;
    border-top: 1px solid var(--color-gray-200);
    padding: 64px 0 32px;
}
.site-footer .footer-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}
.site-footer .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}
.site-footer .footer-brand {
    font: 700 1.25rem var(--font-display);
    color: var(--color-primary);
    text-decoration: none;
    display: block;
    margin-bottom: 12px;
}
.site-footer .footer-brand:visited { color: var(--color-primary); }
.site-footer .footer-desc {
    font: var(--text-body);
    color: var(--color-gray-500);
    max-width: 300px;
}
.site-footer .footer-col h4 {
    font: var(--text-label);
    color: var(--color-gray-800);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}
.site-footer .footer-col a {
    display: block;
    margin-bottom: 10px;
    font: var(--text-body);
    color: var(--color-gray-500);
    text-decoration: none;
}
.site-footer .footer-col a:visited { color: var(--color-gray-500); }
.site-footer .footer-col a:hover { color: var(--color-primary); }
.site-footer .footer-bottom {
    text-align: center;
    border-top: 1px solid var(--color-gray-200);
    padding-top: 24px;
    font: var(--text-caption);
    color: var(--color-gray-400);
}
@media (max-width: 768px) {
    .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 480px) {
    .site-footer .footer-grid { grid-template-columns: 1fr; }
}