/* ===================================
   SkyTrade City Landing Page Styles
   Modern, Professional, Civic Design
   =================================== */

/* CSS Variables */
:root {
    /* Brand Colors */
    --color-primary: #004C97;
    --color-primary-dark: #003870;
    --color-primary-light: #EFF6FF;
    --color-accent: #0A84FF;
    --color-accent-dark: #0066CC;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Semantic Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-secondary: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ===================================
   Reset & Base Styles
   =================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--color-gray-800);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

/* ===================================
   Layout
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ===================================
   Navigation
   =================================== */

.nav {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-gray-200);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.nav-brand .logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    color: var(--color-gray-900);
}

.logo-text strong {
    color: var(--color-primary);
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-base);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        gap: var(--spacing-md);
    }
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary-light);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 2px 2px, var(--color-gray-200) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-900);
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-trust {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.hero-visual {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-gray-200);
}

.map-placeholder {
    background-color: var(--color-gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-trust {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* ===================================
   Trust Section
   =================================== */

.trust-section {
    background-color: var(--color-primary-light);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.trust-section .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.trust-quote {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.trust-quote p {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-gray-700);
    font-style: italic;
    line-height: 1.6;
}

.quote-icon {
    flex-shrink: 0;
}

/* ===================================
   Section Styles
   =================================== */

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ===================================
   Features Section
   =================================== */

.features-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.feature-icon {
    margin-bottom: var(--spacing-md);
}

.feature-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
    font-size: 1.375rem;
}

.feature-description {
    color: var(--color-gray-600);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Benefits Section
   =================================== */

.benefits-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

.benefits-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.benefits-text .section-title {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.benefits-text .section-description {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.benefits-list li {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.benefits-list svg {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.benefits-list div {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-700);
}

.benefits-list strong {
    color: var(--color-gray-900);
    font-weight: 600;
}

.benefits-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-200);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    font-weight: 500;
}

@media (max-width: 1024px) {
    .benefits-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

/* ===================================
   FAQ Section
   =================================== */

.faq-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-900);
    text-align: left;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-gray-50);
}

.faq-question[aria-expanded="true"] {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-gray-500);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-answer.active {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ===================================
   Demo Section
   =================================== */

.demo-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-white) 100%);
}

.demo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.demo-info .section-title {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.demo-info .section-description {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.demo-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.demo-benefits li {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.demo-benefits svg {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.demo-benefits span {
    color: var(--color-gray-700);
    line-height: 1.6;
}

.demo-form-container {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

@media (max-width: 1024px) {
    .demo-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Contact Section
   =================================== */

.contact-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.contact-info .section-description {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-item svg {
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.contact-item div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-item strong {
    font-weight: 600;
    color: var(--color-gray-900);
}

.contact-item a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.signup-form-container {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-gray-200);
}

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Forms
   =================================== */

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-title {
    font-size: 1.5rem;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.form-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-weight: 600;
    color: var(--color-gray-700);
    font-size: 0.9375rem;
}

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

.form-input,
.form-textarea {
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    background-color: var(--color-white);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-700);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    color: var(--color-white);
}

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

.footer-tagline {
    color: var(--color-gray-400);
    line-height: 1.6;
}

.footer-column h4 {
    color: var(--color-white);
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    color: var(--color-gray-400);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
}

.footer-legal a {
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

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

.footer-legal span {
    color: var(--color-gray-700);
}

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 640px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ===================================
   Modal
   =================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.modal:not([hidden]) {
    opacity: 1;
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    position: relative;
    box-shadow: var(--shadow-xl);
    text-align: center;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal:not([hidden]) .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    font-size: 1.5rem;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-gray-900);
}

.modal-icon {
    margin: 0 auto var(--spacing-lg);
}

.modal-title {
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
}

.modal-message {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   Gallery Section
   =================================== */

.gallery-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-xl);
}

.gallery-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background-color: var(--color-white);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
    overflow: hidden;
}

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

.gallery-item {
    display: block;
    width: 100%;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    line-height: 0;
}

.gallery-item img {
    display: block;
    width: 100%;
    height: 160px;
    object-fit: cover;
    background-color: var(--color-gray-100);
}

.gallery-label {
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.95rem;
}

/* ===================================
   Image Modal (Lightbox)
   =================================== */

.modal-content--wide {
    max-width: 1280px;
}

.image-modal-figure {
    margin: 0 0 var(--spacing-lg) 0;
}

.image-modal-figure img {
    width: 100%;
    height: auto;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    background-color: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
}

.image-modal-caption {
    color: var(--color-gray-600);
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
}

.image-modal-controls {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
    text-align: center;
}

.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
   =================================== */

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Reduced motion for accessibility */
@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;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #003366;
        --color-accent: #0066CC;
    }
    
    .feature-card,
    .faq-item,
    .stat-card {
        border-width: 3px;
    }
}