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

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

/* Lazy loading placeholder */
img[loading="lazy"] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

img.loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Responsive images */
img[srcset] {
    width: 100%;
    height: auto;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a3a 50%, #2d2d5a 100%);
    overflow-x: hidden;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(1deg); }
}

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

/* Header and Navigation */
.header {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #64b5f6;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #64b5f6;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-login {
    background: transparent;
    color: #64b5f6;
    border: 2px solid #64b5f6;
}

.btn-login:hover {
    background: #64b5f6;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 181, 246, 0.4);
}

.btn-register {
    background: linear-gradient(45deg, #64b5f6, #42a5f5);
    color: #fff;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(100, 181, 246, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    background: none;
    border: none;
    padding: 0;
    width: 30px;
    height: 30px;
    justify-content: center;
    align-items: center;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    transition: 0.3s;
    display: block;
}

/* Main Content */
.main-content {
    margin-top: 80px;
}

/* Breadcrumb Navigation */
.breadcrumb-nav {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
    align-items: center;
}

.breadcrumb-item {
    color: #b0b0b0;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: #64b5f6;
}

.breadcrumb-item a {
    color: #64b5f6;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-item a:hover {
    color: #fff;
}

.breadcrumb-item a[aria-current="page"] {
    color: #b0b0b0;
    cursor: default;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, rgba(15, 15, 35, 0.8) 0%, rgba(26, 26, 58, 0.8) 100%);
    position: relative;
}

.hero-container {
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    color: #fff;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(100, 181, 246, 0.5);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #b0b0b0;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn-primary {
    background: linear-gradient(45deg, #64b5f6, #42a5f5);
    color: #fff;
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(100, 181, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #64b5f6;
    border: 2px solid #64b5f6;
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-secondary:hover {
    background: #64b5f6;
    color: #fff;
    transform: translateY(-3px);
}

/* Features Section */
.features-section {
    padding: 5rem 0;
    background: rgba(255, 255, 255, 0.02);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 3rem;
    text-shadow: 0 0 15px rgba(100, 181, 246, 0.3);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: linear-gradient(45deg, #64b5f6, #42a5f5);
    padding: 20px;
}

.feature-card h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature-card h4 {
    color: #42a5f5;
    margin: 8px 0 5px 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.feature-card h5 {
    color: #90caf9;
    margin: 6px 0 4px 0;
    font-size: 1rem;
    font-weight: 400;
}

.feature-card p {
    color: #b0b0b0;
    line-height: 1.6;
}

/* About Section */
.about-section {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 15px rgba(100, 181, 246, 0.3);
}

.about-text p {
    color: #b0b0b0;
    margin-bottom: 1rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

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

.about-img {
    max-width: 100%;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* CTA Section */
.cta-section {
    padding: 5rem 0;
    background: rgba(100, 181, 246, 0.1);
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1rem;
    text-shadow: 0 0 15px rgba(100, 181, 246, 0.3);
}

.cta-section p {
    color: #b0b0b0;
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: rgba(15, 15, 35, 0.95);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: #64b5f6;
    margin-bottom: 1rem;
}

.footer-section p {
    color: #b0b0b0;
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #64b5f6;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #b0b0b0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(15, 15, 35, 0.95);
        flex-direction: column;
        padding: 1rem 0;
        text-align: center;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-buttons {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .content-wrapper {
        padding: 2rem 1.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .error-text h1 {
        font-size: 2rem;
    }
    
    .error-text h2 {
        font-size: 1.5rem;
    }
    
    .error-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
}

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

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #64b5f6;
    outline-offset: 2px;
}

/* Page Header Styles */
.page-header {
    padding: 8rem 0 4rem;
    text-align: center;
    background: linear-gradient(135deg, rgba(15, 15, 35, 0.9) 0%, rgba(26, 26, 58, 0.9) 100%);
}

.page-header h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(100, 181, 246, 0.5);
}

.page-header p {
    font-size: 1.2rem;
    color: #b0b0b0;
}

/* Content Section Styles */
.content-section {
    padding: 4rem 0;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.content-wrapper h2 {
    color: #64b5f6;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.content-wrapper p {
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.content-wrapper ul {
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.content-wrapper li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.contact-info {
    background: rgba(100, 181, 246, 0.1);
    padding: 1.5rem;
    border-radius: 10px;
    margin: 2rem 0;
}

.policy-footer {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 2rem;
    border-left: 4px solid #64b5f6;
}

/* Contact Page Styles */
.contact-section {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info-section h2 {
    color: #64b5f6;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.contact-info-section p {
    color: #b0b0b0;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-methods {
    margin-bottom: 3rem;
}

.contact-method {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.contact-details h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.contact-details p {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.support-features h3 {
    color: #64b5f6;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.support-features ul {
    color: #b0b0b0;
    padding-left: 1.5rem;
}

.support-features li {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.contact-form-section h2 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 2rem;
}

.contact-form-section p {
    color: #b0b0b0;
    margin-bottom: 2rem;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: #fff;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #64b5f6;
    box-shadow: 0 0 0 2px rgba(100, 181, 246, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: #b0b0b0;
    font-size: 0.95rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
}

.checkbox-label a {
    color: #64b5f6;
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.form-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(100, 181, 246, 0.1);
    border-radius: 8px;
    border-left: 4px solid #64b5f6;
}

.form-note p {
    color: #b0b0b0;
    font-size: 0.9rem;
    margin: 0;
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.02);
}

.faq-section h2 {
    text-align: center;
    color: #fff;
    margin-bottom: 3rem;
    font-size: 2.5rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.faq-item h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.faq-item p {
    color: #b0b0b0;
    line-height: 1.6;
}

/* 404 Error Page Styles */
.error-section {
    padding: 6rem 0;
    text-align: center;
}

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

.error-image {
    margin-bottom: 3rem;
}

.error-illustration {
    max-width: 300px;
    height: auto;
}

.error-text h1 {
    color: #64b5f6;
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(100, 181, 246, 0.5);
}

.error-text h2 {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.error-text p {
    color: #b0b0b0;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.error-help {
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.error-help h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.error-help p {
    color: #b0b0b0;
    margin-bottom: 1rem;
}

.error-help ul {
    color: #b0b0b0;
    padding-left: 2rem;
}

.error-help li {
    margin-bottom: 0.5rem;
}

.quick-links {
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.quick-links h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.quick-link {
    display: block;
    padding: 0.75rem 1rem;
    background: rgba(100, 181, 246, 0.1);
    color: #64b5f6;
    text-decoration: none;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(100, 181, 246, 0.2);
}

.quick-link:hover {
    background: rgba(100, 181, 246, 0.2);
    transform: translateY(-2px);
}

.search-suggestion {
    text-align: left;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-suggestion h3 {
    color: #64b5f6;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.search-suggestion p {
    color: #b0b0b0;
    margin: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    body {
        background: #000;
        color: #fff;
    }
    
    .btn {
        border: 2px solid #fff;
    }
}