:root {
    --bg-dark: #0d0f18;
    --bg-card: rgba(30, 33, 57, 0.6);
    --text-primary: #ffffff;
    --text-secondary: #b0b3c5;
    --accent: #6c63ff;
    --accent-hover: #827bff;
    --neon-blue: #00f0ff;
    --neon-purple: #bd00ff;
    --gradient: linear-gradient(45deg, var(--neon-blue), var(--neon-purple));
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(108, 99, 255, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(189, 0, 255, 0.05) 0%, transparent 20%);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 15, 24, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo i {
    font-size: 2rem;
}

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

nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

nav a:hover {
    color: var(--neon-blue);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--glass);
    border-radius: 30px;
    padding: 8px 15px;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.search-bar:hover {
    border-color: var(--accent);
}

.search-bar input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    outline: none;
    padding: 0 10px;
    width: 200px;
}

.search-bar i {
    color: var(--text-secondary);
}

.ai-assistant {
    background: var(--gradient);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.ai-assistant:hover {
    transform: scale(1.1);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    border: 2px solid var(--bg-dark);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    position: relative;
}

.hero-content {
    max-width: 700px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, var(--neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(108, 99, 255, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent);
}

.hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    height: 80%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Featured Section */
.section-title {
    font-size: 2rem;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-border);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 60px;
}

.card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border-color: rgba(108, 99, 255, 0.3);
}

.card-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.card-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--gradient);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.card-content {
    padding: 20px;
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.author-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--gradient);
}

/* AI Assistant Popup */
.ai-popup {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 380px;
    height: 500px;
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
}

.ai-popup.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}

.ai-header {
    padding: 15px 20px;
    background: rgba(108, 99, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--glass-border);
}

.ai-header i {
    font-size: 1.2rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ai-header h3 {
    font-size: 1.1rem;
}

.ai-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.ai-message {
    background: rgba(108, 99, 255, 0.1);
    padding: 15px;
    border-radius: 15px;
    margin-bottom: 15px;
    max-width: 80%;
    border: 1px solid var(--glass-border);
}

.ai-message.user {
    background: rgba(0, 240, 255, 0.1);
    margin-left: auto;
    border-color: rgba(0, 240, 255, 0.2);
}

.ai-input {
    padding: 15px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    gap: 10px;
}

.ai-input input {
    flex: 1;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 12px 20px;
    color: var(--text-primary);
    outline: none;
}

.ai-input button {
    background: var(--gradient);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.ai-input button:hover {
    transform: scale(1.05);
}

/* Categories */
.categories {
    margin-bottom: 60px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    cursor: pointer;
}

.category-card:hover {
    background: rgba(108, 99, 255, 0.1);
    transform: translateY(-5px);
    border-color: var(--accent);
}

.category-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.category-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer */
footer {
    background: rgba(10, 12, 20, 0.9);
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-border);
    margin-top: 60px;
}

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

.footer-col h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient);
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-col ul li a:hover {
    color: var(--neon-blue);
}

.footer-col ul li a i {
    width: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass);
    color: var(--text-primary);
    transition: var(--transition);
    text-decoration: none;
}

.social-links a:hover {
    background: var(--gradient);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        padding: 60px 0 40px;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero-image {
        width: 40%;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    nav ul {
        gap: 15px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero-content {
        text-align: center;
        margin: 0 auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        position: relative;
        width: 100%;
        height: 300px;
        transform: none;
        margin-top: 40px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    nav {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .ai-popup {
        width: calc(100% - 40px);
        right: 20px;
        bottom: 20px;
    }
}