/* CSS Custom Properties for Design System */
:root {
    /* Colors - Government-appropriate palette */
    --primary: #003d7a;           /* Dark blue - authority, trust */
    --primary-light: #0052a3;     /* Slightly lighter blue */
    --primary-lighter: #e6f0ff;   /* Very light blue backgrounds */
    --accent: #d84315;            /* Emergency red-orange */
    --success: #1b5e20;           /* Forest green */
    --warning: #f57f17;           /* Amber */
    --neutral-dark: #212121;      /* Near black for text */
    --neutral-light: #f5f5f5;     /* Light gray */
    --neutral-border: #e0e0e0;    /* Border gray */
    --white: #ffffff;
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --line-height-tight: 1.3;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Border Radius */
    --radius: 0.375rem;
    --radius-lg: 0.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
}

/* High Contrast Mode */
@media (prefers-contrast: more) {
    :root {
        --primary: #000080;
        --accent: #ff0000;
        --success: #006600;
    }
}

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

/* ========== BASE STYLES ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: var(--line-height-normal);
    color: var(--neutral-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ========== ACCESSIBILITY ========== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

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

/* Accessibility Controls Bar */
.accessibility-bar {
    background-color: var(--neutral-light);
    border-bottom: 2px solid var(--neutral-border);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    justify-content: center;
    font-size: var(--font-size-sm);
    flex-wrap: wrap;
}

.accessibility-bar button {
    background-color: var(--white);
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    min-width: 44px;
    min-height: 44px;
}

.accessibility-bar button:hover {
    background-color: var(--primary);
    color: var(--white);
}

.accessibility-bar button.active {
    background-color: var(--primary);
    color: var(--white);
}

.accessibility-bar .separator {
    color: var(--neutral-border);
}

/* Emergency Alert */
.emergency-alert {
    background-color: var(--accent);
    color: var(--white);
    padding: var(--spacing-md);
    border-bottom: 4px solid #b71c1c;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.emergency-alert.hidden {
    display: none;
}

.emergency-alert strong {
    font-size: var(--font-size-lg);
}

.emergency-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.emergency-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.emergency-text {
    flex: 1;
}

.close-alert {
    background: none;
    border: none;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.close-alert:hover {
    opacity: 0.8;
}

/* ========== HEADER ========== */
header {
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    font-size: 2.5rem;
}

header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
}

.tagline {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-top: var(--spacing-xs);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    padding: var(--spacing-sm);
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 44px;
    height: 44px;
}

.menu-toggle span {
    width: 24px;
    height: 3px;
    background-color: var(--white);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.header-nav {
    display: flex;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-bottom: 3px solid transparent;
    transition: border-color var(--transition-fast);
    font-weight: 500;
    font-size: var(--font-size-lg);
}

.nav-links a:hover,
.nav-links a:focus {
    border-bottom-color: var(--white);
    outline: none;
}

/* ========== MAIN CONTENT ========== */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

section {
    margin-bottom: var(--spacing-2xl);
}

h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

/* ========== SEARCH ========== */
.search-section {
    background-color: var(--primary-lighter);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
}

.search-container {
    position: relative;
    display: flex;
    gap: var(--spacing-sm);
}

#search-input {
    flex: 1;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    border: 2px solid var(--primary);
    border-radius: var(--radius);
    font-family: inherit;
    min-height: 44px;
}

#search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(3, 61, 122, 0.1);
}

#search-button {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: var(--font-size-lg);
    font-weight: 600;
    transition: background-color var(--transition-fast);
    min-height: 44px;
}

#search-button:hover,
#search-button:focus {
    background-color: var(--primary-light);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.search-results {
    margin-top: var(--spacing-md);
    background-color: var(--white);
    border: 2px solid var(--primary);
    border-radius: var(--radius);
    max-height: 400px;
    overflow-y: auto;
}

.search-results.hidden {
    display: none;
}

.search-result-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--neutral-border);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.search-result-item:hover {
    background-color: var(--primary-lighter);
}

.search-result-item:last-child {
    border-bottom: none;
}

/* ========== QUICK TASKS ========== */
.quick-tasks {
    margin-bottom: var(--spacing-2xl);
}

.task-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.task-card {
    background-color: var(--white);
    border: 2px solid var(--neutral-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    min-height: 160px;
    justify-content: center;
}

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

.task-card:focus {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.task-icon {
    font-size: 2rem;
}

.task-card h3 {
    font-size: var(--font-size-lg);
    margin: 0;
}

.task-card p {
    font-size: var(--font-size-sm);
    color: var(--neutral-dark);
    margin: 0;
}

/* ========== SERVICES ========== */
.category-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--neutral-border);
    flex-wrap: wrap;
}

.category-tab {
    background: none;
    border: none;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-dark);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
    min-height: 44px;
}

.category-tab:hover {
    color: var(--primary);
}

.category-tab[aria-selected="true"] {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.category-tab:focus {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.category-panel {
    animation: fadeIn 200ms ease-in;
}

.category-panel.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-item {
    background-color: var(--neutral-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
}

.service-item h4 {
    margin-bottom: var(--spacing-md);
}

.service-item ul {
    list-style: none;
}

.service-item li {
    margin-bottom: var(--spacing-sm);
}

.service-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: var(--spacing-xs);
}

.service-item a:hover {
    text-decoration: underline;
    color: var(--primary-light);
}

.service-item a:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ========== TRACK REQUEST ========== */
.track-section {
    background-color: var(--primary-lighter);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.track-section form {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-weight: 500;
}

.required {
    color: var(--accent);
}

input[type="text"],
input[type="search"],
input[type="email"],
input[type="tel"],
textarea {
    padding: var(--spacing-md);
    border: 2px solid var(--primary);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    min-height: 44px;
}

input[type="text"]:focus,
input[type="search"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(3, 61, 122, 0.1);
}

button[type="submit"],
.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
}

button[type="submit"]:hover,
.btn-primary:hover {
    background-color: var(--primary-light);
}

button[type="submit"]:focus,
.btn-primary:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

#track-results {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--white);
    border-left: 4px solid var(--success);
    border-radius: var(--radius);
}

#track-results.hidden {
    display: none;
}

/* ========== SAVED FORMS ========== */
.saved-section {
    background-color: var(--neutral-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.saved-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.saved-item {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    border: 2px solid var(--neutral-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.saved-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.saved-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.saved-item a:hover {
    text-decoration: underline;
}

.saved-item button {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-size: 1.25rem;
}

.empty-state {
    text-align: center;
    color: var(--neutral-dark);
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
}

/* ========== FAQ ========== */
.faq-container {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--white);
    border: 2px solid var(--neutral-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-item summary {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-weight: 600;
    color: var(--primary);
    background-color: var(--primary-lighter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: background-color var(--transition-fast);
    min-height: 44px;
}

.faq-item summary::after {
    content: '+';
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item summary:hover {
    background-color: #cce5ff;
}

.faq-item summary:focus {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.faq-item p {
    padding: var(--spacing-md) var(--spacing-lg);
    line-height: var(--line-height-relaxed);
    color: var(--neutral-dark);
}

/* ========== ACCESSIBILITY STATEMENT ========== */
.accessibility-section {
    background-color: var(--primary-lighter);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent);
}

.accessibility-section a {
    color: var(--primary);
    text-decoration: underline;
}

.accessibility-section a:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ========== FOOTER ========== */
footer {
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto var(--spacing-lg);
}

.footer-section h3 {
    color: var(--white);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--white);
    text-decoration: underline;
}

.footer-section a:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: var(--font-size-sm);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary);
        padding: var(--spacing-md);
        gap: var(--spacing-md);
        z-index: 99;
        border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    }
    
    .nav-links:not([hidden]) {
        display: flex;
    }
    
    .nav-links a {
        padding: var(--spacing-sm);
        font-size: var(--font-size-base);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    header h1 {
        font-size: var(--font-size-lg);
    }
    
    .task-grid {
        grid-template-columns: 1fr;
    }
    
    .service-list {
        grid-template-columns: 1fr;
    }
    
    .accessibility-bar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .accessibility-bar button {
        width: 100%;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    #search-button {
        width: 100%;
    }
    
    .category-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .category-tab {
        white-space: nowrap;
        padding: var(--spacing-sm);
        font-size: var(--font-size-base);
    }
    
    h2 {
        font-size: var(--font-size-xl);
    }
    
    h3 {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    main {
        padding: var(--spacing-md);
    }
    
    .logo-section {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .logo {
        font-size: 2rem;
    }
    
    header h1 {
        font-size: var(--font-size-lg);
        text-align: center;
    }
    
    .tagline {
        font-size: var(--font-size-sm);
        text-align: center;
    }
    
    .search-section {
        padding: var(--spacing-md);
    }
    
    #search-input {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .task-card {
        min-height: 120px;
    }
    
    input[type="text"],
    input[type="search"] {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .track-section form {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ========== TEXT SIZE ADJUSTMENT ========== */
body.text-size-increase {
    font-size: 1.125rem;
}

body.text-size-increase-2 {
    font-size: 1.25rem;
}

body.text-size-decrease {
    font-size: 0.875rem;
}

/* ========== HIGH CONTRAST MODE ========== */
body.high-contrast {
    --primary: #000080;
    --primary-light: #000099;
    --primary-lighter: #e6e6ff;
    --accent: #ff0000;
    --neutral-dark: #000000;
    --neutral-light: #ffffff;
    --neutral-border: #000000;
}

body.high-contrast * {
    border-width: 2px;
}

body.high-contrast input,
body.high-contrast textarea {
    border-width: 3px;
}

/* Print Styles */
@media print {
    .accessibility-bar,
    .emergency-alert,
    .menu-toggle,
    .search-section {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    a {
        color: inherit;
    }
}