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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background Effects */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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;
    z-index: -1;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Floating particles effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(255,255,255,0.2), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: particleFloat 15s linear infinite;
    z-index: -1;
}

@keyframes particleFloat {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-100px); }
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    color: #667eea;
    font-size: 1.8rem;
    font-weight: bold;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #667eea;
}

.nav-menu a[aria-current="page"] {
    color: #667eea;
    font-weight: bold;
}

.nav-menu a[aria-current="page"]::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #667eea;
}

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

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

.btn-login {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-login:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.btn-register {
    background: #667eea;
    color: white;
}

.btn-register:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
    background: linear-gradient(45deg, #5a6fd8, #6a4190);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 255, 255, 0.3);
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 1;
}

/* Hero Section */
.hero {
    padding: 4rem 2rem;
    color: white;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hero-text {
    text-align: left;
    padding-left: 1rem;
}

.hero-logo {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo img {
    width: 100%;
    max-width: 450px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-logo img:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.image-placeholder {
    width: 400px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.image-placeholder:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

.image-placeholder p {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.image-placeholder span {
    font-size: 14px;
    opacity: 0.8;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
    line-height: 1.2;
    font-weight: 700;
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease-out 0.2s both;
    line-height: 1.6;
    opacity: 0.95;
    max-width: 500px;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
    margin-top: 1rem;
}

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

/* Features Section */
.features {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    margin: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Registration Steps */
.registration-steps {
    padding: 4rem 0;
    color: white;
}

.registration-steps h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
}

.step {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.step h3 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    margin: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.about-section p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    text-align: justify;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

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

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

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

.footer-section a:hover {
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 1rem 0;
    }
    
    .hero-text {
        text-align: center;
        padding-left: 0;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
        max-width: 100%;
    }
    
    .image-placeholder {
        width: 300px;
        height: 225px;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features,
    .about-section {
        margin: 1rem;
    }
    
    .features h2,
    .registration-steps h2,
    .about-section h2 {
        font-size: 2rem;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .error-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .helpful-links ul {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* 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 */
a:focus,
button:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Page-specific styles */
.page-header {
    padding: 3rem 0;
    text-align: center;
    color: white;
    background: rgba(0, 0, 0, 0.3);
    margin: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-description {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 3rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    margin: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.content-wrapper h2 {
    color: #667eea;
    margin: 2rem 0 1rem;
    font-size: 1.5rem;
}

.content-wrapper p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
    text-align: justify;
}

.content-wrapper a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.content-wrapper a:hover {
    color: #5a6fd8;
    text-decoration: underline;
}

.last-updated {
    font-style: italic;
    color: #666;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

/* Contact page styles */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-methods {
    margin: 2rem 0;
}

.contact-method {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.contact-method h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.support-features ul {
    list-style: none;
    padding: 0;
}

.support-features li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.support-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* Contact form styles */
.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    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: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #e74c3c;
}

.error-message {
    color: #e74c3c;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

/* FAQ section */
.faq-section {
    margin-top: 2rem;
}

.faq-section h3 {
    color: #667eea;
    margin: 1.5rem 0 0.5rem;
    font-size: 1.2rem;
}

/* 404 page styles */
.error-page {
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.error-content {
    max-width: 600px;
    margin: 0 auto;
}

.error-code {
    font-size: 8rem;
    font-weight: bold;
    color: #667eea;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    margin-bottom: 1rem;
}

.error-message h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.error-message p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.helpful-links {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.helpful-links h3 {
    margin-bottom: 1rem;
    color: #fff;
}

.helpful-links ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.helpful-links li a {
    color: #fff;
    text-decoration: none;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: background 0.3s ease;
}

.helpful-links li a:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Additional info section */
.additional-info {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    body {
        background: #000;
        color: #fff;
    }
    
    .header {
        background: #000;
        border-bottom: 2px solid #fff;
    }
    
    .nav-menu a {
        color: #fff;
    }
    
    .content-section {
        background: #000;
        color: #fff;
        border: 2px solid #fff;
    }
    
    .contact-form {
        background: #000;
        color: #fff;
        border: 2px solid #fff;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        background: #000;
        color: #fff;
        border-color: #fff;
    }
}