/* 567 Slots - Main Stylesheet */
/* Optimized for performance and SEO */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo img {
    height: 45px;
    width: auto;
    max-width: 150px;
    transition: transform 0.3s ease;
}

.nav-logo img:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
    padding: 12px 16px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
    color: #ffed4e;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.nav-menu a:focus {
    outline: 2px solid #ffed4e;
    outline-offset: 2px;
    border-radius: 3px;
    color: #ffed4e;
}

.nav-actions {
    display: flex;
    gap: 15px;
}

.btn-login, .btn-register {
    padding: 14px 28px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    min-height: 48px;
    min-width: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 8px;
}

.btn-login {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-login:hover {
    background: white;
    color: #1e3c72;
}

.btn-register {
    background: #ffd700;
    color: #1e3c72;
}

.btn-register:hover {
    background: #ffed4e;
    transform: translateY(-2px);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 2px solid white;
    color: white;
    font-size: 1.5rem;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
    min-width: 48px;
    align-items: center;
    justify-content: center;
    margin-left: 15px;
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

.mobile-menu-btn:focus {
    outline: 3px solid #ffd700;
    outline-offset: 2px;
}

.mobile-menu-btn.active {
    background: rgba(255, 255, 255, 0.2);
}

/* Breadcrumb */
.breadcrumb {
    background: #e9ecef;
    padding: 10px 0;
    border-bottom: 1px solid #dee2e6;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 10px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.breadcrumb-list li:not(:last-child)::after {
    content: ">";
    margin-left: 10px;
    color: #6c757d;
}

.breadcrumb-list a {
    color: #1a365d;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.breadcrumb-list a:hover {
    color: #2c5282;
    text-decoration: underline;
    background-color: rgba(26, 54, 93, 0.1);
}

.breadcrumb-list a:focus {
    outline: 2px solid #1a365d;
    outline-offset: 2px;
    border-radius: 3px;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 10px;
}

.last-updated {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 16px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
    min-height: 48px;
    min-width: 48px;
    margin: 8px;
}

.btn-primary {
    background: #ffd700;
    color: #1e3c72;
}

.btn-primary:hover {
    background: #ffed4e;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.35);
    color: #ffffff;
    border-color: #ffffff;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
    font-weight: 600;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.45);
    color: #ffffff;
    border-color: #ffed4e;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

.btn-secondary:focus {
    outline: 2px solid #ffed4e;
    outline-offset: 2px;
    background: rgba(255, 255, 255, 0.45);
    color: #ffffff;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

/* Content Sections */
.brand-intro, .features, .registration-process, .advantages-security, .faq, .cta {
    padding: 80px 0;
}

.brand-intro {
    background: white;
}

.features {
    background: #f8f9fa;
}

.registration-process {
    background: white;
}

.advantages-security {
    background: #f8f9fa;
}

.faq {
    background: white;
}

.cta {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    text-align: center;
}

/* Section Headings */
h2 {
    font-size: 2.2rem;
    margin-bottom: 40px;
    text-align: center;
    color: #1e3c72;
    font-weight: 700;
}

.cta h2 {
    color: white;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2a5298;
    font-weight: 600;
}

/* Intro Content */
.intro-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
}

.intro-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.2);
}

.intro-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    border-radius: 12px;
    margin-bottom: 25px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    background: #f8f9fa;
    padding: 10px;
}

.feature-card img:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.feature-card h3 {
    margin-bottom: 15px;
    color: #1e3c72;
}

.feature-card p {
    line-height: 1.7;
    color: #444;
}

/* Process Steps */
.process-content {
    max-width: 900px;
    margin: 0 auto;
}

.process-steps {
    margin-bottom: 40px;
}

.step {
    background: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    border-left: 5px solid #ffd700;
}

.step h3 {
    color: #1e3c72;
    margin-bottom: 15px;
}

.step p {
    line-height: 1.8;
    color: #444;
}

.process-actions {
    text-align: center;
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Advantages Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.advantage-item h3 {
    color: #1e3c72;
    margin-bottom: 15px;
}

.advantage-item p {
    line-height: 1.7;
    color: #444;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    overflow: hidden;
}

.faq-item h3 {
    background: #f8f9fa;
    padding: 20px;
    margin: 0;
    color: #1e3c72;
    cursor: pointer;
    transition: background 0.3s ease;
    /* Ensure proper heading semantics while making it interactive */
    outline: none;
    border: none;
    text-align: left;
    width: 100%;
    display: block;
    position: relative;
    min-height: 48px;
}

.faq-item h3:hover {
    background: #e9ecef;
}

.faq-item h3:focus {
    outline: 3px solid #ffd700;
    outline-offset: 2px;
    background: #e9ecef;
}

.faq-item h3::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
    pointer-events: none;
}

.faq-item.active h3::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
    padding: 0 20px;
    margin: 0;
    line-height: 1.7;
    color: #444;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active p {
    padding: 20px;
    max-height: 500px;
}

/* CTA Section */
.cta p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* About Page Styles */
.about-content {
    padding: 60px 0;
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
}

.about-image {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.2);
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-values, .about-commitment, .about-future {
    margin-bottom: 60px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.value-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.value-item h3 {
    color: #1e3c72;
    margin-bottom: 15px;
}

.value-item p {
    line-height: 1.7;
    color: #666;
}

/* Privacy, Terms, Disclaimer Pages */
.privacy-content, .terms-content, .disclaimer-content {
    padding: 60px 0;
    max-width: 900px;
    margin: 0 auto;
}

.privacy-intro, .terms-intro, .disclaimer-intro {
    margin-bottom: 40px;
}

.privacy-section, .terms-section, .disclaimer-section {
    margin-bottom: 40px;
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.privacy-section h2, .terms-section h2, .disclaimer-section h2 {
    color: #1e3c72;
    text-align: left;
    margin-bottom: 20px;
}

.privacy-section h3, .terms-section h3, .disclaimer-section h3 {
    color: #2a5298;
    margin-bottom: 15px;
    margin-top: 25px;
}

.privacy-section p, .terms-section p, .disclaimer-section p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.privacy-section ul, .terms-section ul, .disclaimer-section ul {
    margin-bottom: 15px;
    padding-left: 20px;
}

.privacy-section li, .terms-section li, .disclaimer-section li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Support Page */
.support-content {
    padding: 60px 0;
}

/* Support Page Icons */
.icon {
    font-size: 1.2em;
    margin-right: 10px;
    display: inline-block;
}

.method-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 20px;
    display: block;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
    transition: transform 0.3s ease;
}

.method-icon:hover {
    transform: scale(1.1);
}

.topic-icon {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 15px;
    display: block;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    box-shadow: 0 3px 10px rgba(30, 60, 114, 0.3);
}

.list-icon {
    font-size: 1.1em;
    margin-right: 8px;
    display: inline-block;
    width: 20px;
    text-align: center;
}

.faq-icon {
    font-size: 1.2em;
    margin-right: 10px;
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    vertical-align: middle;
}

.header-icon {
    font-size: 1.5em;
    margin-right: 15px;
    display: inline-block;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #1e3c72;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    vertical-align: middle;
    box-shadow: 0 3px 10px rgba(255, 215, 0, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.support-intro {
    text-align: center;
    margin-bottom: 60px;
}

.support-methods {
    margin-bottom: 60px;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.support-method {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
}

.support-method h3 {
    color: #1e3c72;
    margin-bottom: 15px;
}

.support-method p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: #666;
}

.support-topics {
    margin-bottom: 60px;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.topic-category {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.topic-category h3 {
    color: #1e3c72;
    margin-bottom: 20px;
}

.topic-category ul {
    list-style: none;
    padding: 0;
}

.topic-category li {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
    color: #666;
}

.topic-category li:last-child {
    border-bottom: none;
}

.support-faq {
    margin-bottom: 60px;
}

.support-hours {
    margin-bottom: 40px;
    text-align: center;
}

.hours-info {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    max-width: 600px;
    margin: 0 auto;
}

.hours-info p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.support-tips {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    margin-top: 40px;
}

.support-tips h2 {
    text-align: left;
    margin-bottom: 20px;
}

.support-tips ul {
    padding-left: 20px;
}

.support-tips li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* 404 Error Page */
.error-page {
    padding: 80px 0;
    text-align: center;
}

.error-content {
    max-width: 800px;
    margin: 0 auto;
}

.error-image {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 40px;
}

.error-image img {
    max-width: 500px;
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 0 auto;
    display: block;
}

.error-image img:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 35px rgba(0,0,0,0.2);
}

.error-text h1 {
    font-size: 3rem;
    color: #1e3c72;
    margin-bottom: 10px;
}

.error-text h2 {
    font-size: 2rem;
    color: #dc3545;
    margin-bottom: 20px;
}

.error-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #666;
}

.error-suggestions {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    margin: 40px 0;
    text-align: left;
}

.error-suggestions h3 {
    color: #1e3c72;
    margin-bottom: 20px;
    text-align: center;
}

.error-suggestions ul {
    padding-left: 20px;
}

.error-suggestions li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.error-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 40px 0;
}

.error-navigation {
    margin: 60px 0;
}

.error-navigation h3 {
    color: #1e3c72;
    margin-bottom: 20px;
}

.nav-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-links a {
    color: #0056b3;
    text-decoration: none;
    padding: 10px 20px;
    border: 2px solid #0056b3;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-links a:hover {
    background: #0056b3;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.3);
}

.nav-links a:focus {
    outline: 2px solid #0056b3;
    outline-offset: 2px;
    background: #0056b3;
    color: white;
}

.error-help {
    background: #e9ecef;
    padding: 30px;
    border-radius: 15px;
    margin-top: 40px;
}

.error-help h3 {
    color: #1e3c72;
    margin-bottom: 20px;
}

.error-help p {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1e3c72;
    color: white;
    padding: 60px 0 20px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 20px;
    color: #ffd700;
}

.footer-section p {
    line-height: 1.7;
    opacity: 1;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #ffffff;
    text-decoration: none;
    opacity: 1;
    transition: all 0.3s ease;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    padding: 8px 12px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    border-radius: 4px;
}

.footer-section ul li a:hover {
    opacity: 1;
    color: #ffed4e;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
    background-color: rgba(255, 237, 78, 0.1);
}

.footer-section ul li a:focus {
    outline: 2px solid #ffed4e;
    outline-offset: 2px;
    border-radius: 3px;
    color: #ffed4e;
}

.footer-bottom {
    border-top: 1px solid #2a5298;
    padding-top: 20px;
    text-align: center;
    opacity: 1;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* General Image Optimizations */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Image Loading States */
img[loading="lazy"] {
    opacity: 1;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Image Aspect Ratio Containers */
.image-container {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.image-container:hover img {
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: row;
        height: 70px;
        padding: 0 20px;
        position: relative;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
        flex-direction: column;
        gap: 0;
        margin: 0;
        padding: 20px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-menu.mobile-menu-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu a {
        padding: 16px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        min-height: 48px;
        display: flex;
        align-items: center;
    }
    
    .nav-menu a:last-child {
        border-bottom: none;
    }
    
    .nav-actions {
        margin-top: 20px;
        flex-direction: column;
        gap: 10px;
    }
    
    .btn-login, .btn-register {
        width: 100%;
        justify-content: center;
        min-height: 48px;
        padding: 16px 24px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .intro-content, .about-intro {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .intro-image, .about-image {
        height: 250px;
    }
    
    .features-grid, .advantages-grid, .values-grid {
        grid-template-columns: 1fr;
    }
    
    .support-grid, .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-actions, .cta-actions, .error-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 300px;
        text-align: center;
        min-height: 48px;
        padding: 16px 24px;
    }
    
    .nav-links {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .brand-intro, .features, .registration-process, .advantages-security, .faq, .cta {
        padding: 60px 0;
    }
    
    .feature-card, .advantage-item, .value-item, .support-method, .topic-category {
        padding: 20px;
    }
    
    .feature-card img {
        height: 250px;
    }
    
    .error-image {
        display: flex;
        justify-content: center;
        align-items: center;
        margin-bottom: 30px;
    }
    
    .error-image img {
        height: 200px;
        max-width: 100%;
        margin: 0 auto;
        display: block;
    }
    
    .step {
        padding: 20px;
    }
    
    .privacy-section, .terms-section, .disclaimer-section {
        padding: 20px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus styles for accessibility */
a:focus, button:focus {
    outline: 3px solid #ffd700;
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar, .footer, .breadcrumb {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
}