@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #594AE2;
    --primary-glow: rgba(89, 74, 226, 0.5);
    --secondary: #FF4081;
    --accent: #00E5FF;
    --bg: #0D0D1A;
    --surface: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text: #FFFFFF;
    --text-muted: #B0BEC5;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar Style */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(13, 13, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.2rem;
    font-weight: 800;
    text-decoration: none;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 8px 32px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px var(--primary-glow);
}

.btn-back {
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    transition: var(--transition);
}

.btn-back:hover {
    color: white;
}

/* Detail Section */
.module-header {
    padding: 120px 0 60px;
    text-align: center;
}

.module-header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, #888);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.module-header p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
}

.module-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-bottom: 100px;
}

.module-image-container {
    position: sticky;
    top: 100px;
    cursor: zoom-in;
    transition: transform 0.3s ease;
}

.module-image-container:hover {
    transform: scale(1.02);
}

.module-image {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border: 1px solid var(--glass-border);
}

.module-info h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary);
}

.feature-list {
    list-style: none;
}

.feature-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--surface);
    border-radius: 15px;
    border: 1px solid var(--glass-border);
}

.feature-item h3 {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: white;
}

.feature-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Lightbox Modal */
.image-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    border-radius: 1rem;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.image-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Responsive */
@media (max-width: 900px) {
    .module-content {
        grid-template-columns: 1fr;
    }
    .module-image-container {
        position: static;
        margin-bottom: 2rem;
    }
    .module-header h1 {
        font-size: 2.5rem;
    }
}