:root {
    --primary-dark: #002B5B;
    --primary-light: #6A2C70;
    --accent: #FFA500;
    --text-light: #ffffff;
    --text-dark: #333333;
    --card-bg: rgba(255, 255, 255, 0.9);
    --nav-bg: rgba(0, 43, 91, 0.9);
    --section-padding: 80px 5%;
}

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

body {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: var(--text-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
    background: linear-gradient(135deg, rgba(0, 43, 91, 0.8), rgba(106, 44, 112, 0.8));
}

.header-content {
    max-width: 800px;
    z-index: 2;
}

.header h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInDown 1s ease-out;
}

.header p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease-out 0.3s forwards;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

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

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

nav ul li a:hover {
    color: var(--accent);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
}

/* Main Content */
.main-content {
    padding: 100px 0;
}

.section {
    margin-bottom: 80px;
    padding: var(--section-padding);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.section h2 {
    font-size: 2.2rem;
    margin-bottom: 30px;
    color: var(--accent);
    position: relative;
    padding-bottom: 15px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
}

.section h3 {
    font-size: 1.8rem;
    margin: 30px 0 20px;
    color: var(--text-light);
}

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

/* Code Blocks */
pre {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    border-left: 4px solid var(--accent);
}

code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    color: #f8f8f2;
}

/* Card Layout */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.card h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.card p {
    font-size: 1rem;
    color: var(--text-dark);
}

/* Images */
.img-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 40px 0;
    justify-content: center;
}

.img-box {
    width: 300px;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.img-box:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.img-box:hover img {
    transform: scale(1.1);
}

/* Footer */
footer {
    background: var(--nav-bg);
    padding: 60px 5% 30px;
    text-align: center;
}

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

.footer p {
    margin-bottom: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
}

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

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

/* Responsive */
@media (max-width: 1024px) {
    .header h1 {
        font-size: 2.8rem;
    }
    
    .section {
        padding: 60px 5%;
    }
}

@media (max-width: 768px) {
    nav ul {
        gap: 15px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .section h2 {
        font-size: 1.8rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    nav {
        flex-direction: column;
        padding: 15px;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .section {
        padding: 40px 5%;
    }
    
    .section h2 {
        font-size: 1.5rem;
    }
}

/* Utility */
.notice {
    background: rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 30px 0;
    font-size: 0.9rem;
    border-radius: 0 4px 4px 0;
}