:root {
            --primary: #00d9ff;
            --primary-dark: #0099cc;
            --secondary: #7b2cbf;
            --accent: #ff006e;
            --neon-blue: #00f5ff;
            --neon-purple: #9d00ff;
            --neon-pink: #ff00ff;
            --dark-bg: #0a0a1a;
            --darker-bg: #050510;
            --card-bg: rgba(16, 18, 36, 0.8);
            --light: #e0f7ff;
            --gray: #8a8d9b;
            --shadow: 0 20px 50px rgba(0, 217, 255, 0.1);
            --radius: 16px;
            --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            --glow: 0 0 20px rgba(0, 217, 255, 0.5);
        }

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

        body {
            background-color: var(--dark-bg);
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(123, 44, 191, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(0, 217, 255, 0.1) 0%, transparent 50%),
                linear-gradient(45deg, #050510 0%, #0a0a1a 50%, #050510 100%);
            color: var(--light);
            font-family: 'Exo 2', sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

        /* 3D Background Elements */
        .bg-elements {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
        }

        .floating-shape {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            opacity: 0.1;
            filter: blur(40px);
            animation: float 20s infinite ease-in-out;
        }

        .shape-1 {
            width: 300px;
            height: 300px;
            top: 10%;
            left: 5%;
            animation-delay: 0s;
        }

        .shape-2 {
            width: 200px;
            height: 200px;
            bottom: 20%;
            right: 10%;
            background: linear-gradient(135deg, var(--neon-pink), var(--accent));
            animation-delay: -5s;
        }

        .shape-3 {
            width: 150px;
            height: 150px;
            top: 50%;
            left: 80%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            animation-delay: -10s;
        }

        @keyframes float {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            33% { transform: translate(30px, -30px) rotate(120deg); }
            66% { transform: translate(-20px, 20px) rotate(240deg); }
        }

        .grid-lines {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(rgba(0, 217, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 217, 255, 0.05) 1px, transparent 1px);
            background-size: 50px 50px;
            opacity: 0.3;
        }

        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        header {
            background: rgba(10, 10, 26, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 217, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
            transform-style: preserve-3d;
            perspective: 1000px;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            transform: translateZ(20px);
        }

        .logo-container {
            display: flex;
            align-items: center;
            gap: 15px;
            transform-style: preserve-3d;
            perspective: 500px;
        }

        .logo-img {
            width: 70px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            overflow: hidden;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            box-shadow: var(--glow);
            transform: rotateY(-15deg);
            transition: var(--transition);
            position: relative;
        }

        .logo-img:hover {
            transform: rotateY(0deg) scale(1.05);
        }

        .logo-img img {
            width: 200%;
            height: 200%;
            object-fit: contain;
            filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            transform: translateZ(30px);
        }

        .logo-text .main-text {
            font-family: 'Orbitron', sans-serif;
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--neon-purple));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
            text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
        }

        .logo-text .sub-text {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 300;
            letter-spacing: 3px;
            text-transform: uppercase;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 40px;
            transform-style: preserve-3d;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--light);
            font-family: 'Orbitron', sans-serif;
            font-weight: 500;
            font-size: 1.1rem;
            transition: var(--transition);
            position: relative;
            padding: 8px 0;
            transform: translateZ(0);
        }

        .nav-links a::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transition: width 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border-radius: 2px;
            box-shadow: 0 0 10px var(--primary);
        }

        .nav-links a:hover {
            color: var(--primary);
            text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
            transform: translateY(-2px);
        }

        .nav-links a:hover::before {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--primary);
            text-shadow: 0 0 15px rgba(0, 217, 255, 0.8);
        }

        .nav-links a.active::before {
            width: 100%;
        }

        .user-actions {
            display: flex;
            align-items: center;
            gap: 20px;
            transform-style: preserve-3d;
        }

        .btn {
            padding: 14px 28px;
            border-radius: 50px;
            font-family: 'Orbitron', sans-serif;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            font-size: 1rem;
            letter-spacing: 1px;
            text-transform: uppercase;
            transform-style: preserve-3d;
            perspective: 500px;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
            transform: translateZ(20px);
        }

        .btn-primary:hover {
            transform: translateZ(20px) translateY(-5px) scale(1.05);
            box-shadow: 0 15px 40px rgba(0, 217, 255, 0.4);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
        }

        .btn-secondary:hover {
            background: rgba(0, 217, 255, 0.1);
            transform: translateY(-3px);
            box-shadow: 0 0 30px rgba(0, 217, 255, 0.4);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--neon-pink));
            color: white;
            box-shadow: 0 10px 30px rgba(255, 0, 110, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 15px 40px rgba(255, 0, 110, 0.4);
        }

        .btn-subject {
            background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 50px;
            font-family: 'Orbitron', sans-serif;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
            letter-spacing: 1px;
            transform: translateZ(10px);
            position: relative;
            overflow: hidden;
        }

        .btn-subject:hover {
            transform: translateZ(10px) translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
        }

        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
            background: rgba(0, 217, 255, 0.1);
            padding: 10px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .hamburger:hover {
            background: rgba(0, 217, 255, 0.2);
            transform: rotate(90deg);
        }

        /* Hero Section */
        .hero {
            padding: 125px 0 125px;
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            transform-style: preserve-3d;
        }

        .hero-text {
            transform: translateZ(50px);
        }

        .hero-text h1 {
            font-family: 'Orbitron', sans-serif;
            font-size: 4rem;
            line-height: 1.2;
            margin-bottom: 30px;
            background: linear-gradient(135deg, var(--primary), var(--light), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 30px rgba(0, 217, 255, 0.3);
            transform: translateZ(40px);
        }

        .hero-text h1 span {
            display: block;
            font-size: 3rem;
            color: var(--light);
            text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
        }

        .hero-text p {
            font-size: 1.3rem;
            color: var(--gray);
            margin-bottom: 40px;
            line-height: 1.8;
            transform: translateZ(30px);
        }

        .hero-buttons {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            transform: translateZ(20px);
        }

        .hero-image {
            position: relative;
            transform-style: preserve-3d;
            perspective: 1000px;
        }

        /* Mengatur ukuran GIF agar lebih kecil */
.small-hero {
    width: 80%;
    max-width: 400; /* Ubah angka ini (misal 300px atau 400px) untuk menyesuaikan ukuran */
    margin: 0 auto;
}
    

        .floating-cube {
            position: relative;
            width: 400px;
            height: 400px;
            margin: 0 auto;
            transform-style: preserve-3d;
            animation: rotateCube 20s infinite linear;
        }

        @keyframes rotateCube {
            0% { transform: rotateX(-20deg) rotateY(0deg); }
            100% { transform: rotateX(-20deg) rotateY(360deg); }
        }

        .cube-face {
            position: absolute;
            width: 400px;
            height: 400px;
            border: 2px solid rgba(0, 217, 255, 0.3);
            background: rgba(16, 18, 36, 0.6);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 40px;
            text-align: center;
            box-shadow: inset 0 0 50px rgba(0, 217, 255, 0.1);
        }

        .face-front {
            transform: translateZ(200px);
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(123, 44, 191, 0.1));
        }

        .face-back {
            transform: rotateY(180deg) translateZ(200px);
            background: linear-gradient(135deg, rgba(255, 0, 110, 0.1), rgba(157, 0, 255, 0.1));
        }

        .face-right {
            transform: rotateY(90deg) translateZ(200px);
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 0, 110, 0.1));
        }

        .face-left {
            transform: rotateY(-90deg) translateZ(200px);
            background: linear-gradient(135deg, rgba(123, 44, 191, 0.1), rgba(157, 0, 255, 0.1));
        }

        .face-top {
            transform: rotateX(90deg) translateZ(200px);
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 255, 255, 0.1));
        }

        .face-bottom {
            transform: rotateX(-90deg) translateZ(200px);
            background: linear-gradient(135deg, rgba(123, 44, 191, 0.1), rgba(0, 217, 255, 0.1));
        }

        .cube-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            color: var(--primary);
            text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
        }

        .cube-text {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--light);
        }

        .cube-desc {
            color: var(--gray);
            font-size: 1rem;
        }

        /* Features Section */
        .features {
            padding: 100px 0;
            position: relative;
        }

        .section-title {
            text-align: center;
            margin-bottom: 80px;
            transform-style: preserve-3d;
        }

        .section-title h2 {
            font-family: 'Orbitron', sans-serif;
            font-size: 3.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(0, 217, 255, 0.3);
            transform: translateZ(50px);
        }

        .section-title p {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.2rem;
            transform: translateZ(30px);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
            transform-style: preserve-3d;
        }

        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            border: 1px solid rgba(0, 217, 255, 0.1);
            backdrop-filter: blur(10px);
            transform-style: preserve-3d;
            perspective: 500px;
            transform: translateZ(0);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.1), transparent);
            transition: left 0.6s;
        }

        .feature-card:hover::before {
            left: 100%;
        }

        .feature-card:hover {
            transform: translateY(-20px) translateZ(20px) rotateX(5deg);
            box-shadow: 0 30px 60px rgba(0, 217, 255, 0.2);
            border-color: rgba(0, 217, 255, 0.3);
        }

        .feature-icon {
            width: 100px;
            height: 100px;
            background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(123, 44, 191, 0.1));
            border-radius: 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 30px;
            font-size: 2.5rem;
            color: var(--primary);
            box-shadow: var(--glow);
            transform: translateZ(40px);
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            transform: translateZ(40px) scale(1.1) rotateY(180deg);
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
        }

        .feature-card h3 {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--light);
            transform: translateZ(30px);
        }

        .feature-card p {
            color: var(--gray);
            transform: translateZ(20px);
        }

        /* Content Sections */
        .content-section {
            padding: 80px 0;
            background: rgba(16, 18, 36, 0.5);
            border-radius: var(--radius);
            margin-bottom: 60px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 217, 255, 0.1);
            backdrop-filter: blur(10px);
            transform-style: preserve-3d;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 50px;
            transform-style: preserve-3d;
        }

        .section-header h2 {
            font-family: 'Orbitron', sans-serif;
            font-size: 2.8rem;
            color: var(--light);
            transform: translateZ(40px);
        }

        .subject-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
            transform-style: preserve-3d;
        }

        .subject-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 35px;
            transition: var(--transition);
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid rgba(0, 217, 255, 0.1);
            backdrop-filter: blur(10px);
            transform-style: preserve-3d;
            perspective: 500px;
            cursor: pointer;
            transform: translateZ(0);
            position: relative;
            overflow: hidden;
        }

        .subject-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transition: transform 0.4s;
        }

        .subject-card:hover::before {
            transform: scaleX(1);
        }

        .subject-card:hover {
            transform: translateY(-15px) translateZ(20px) rotateX(5deg);
            box-shadow: 0 25px 50px rgba(0, 217, 255, 0.2);
            border-color: rgba(0, 217, 255, 0.3);
        }

        .subject-icon {
            width: 80px;
            height: 80px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 2rem;
            color: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            transform: translateZ(40px);
            transition: var(--transition);
        }

        .subject-card:hover .subject-icon {
            transform: translateZ(40px) scale(1.1) rotateY(180deg);
            box-shadow: 0 15px 40px rgba(0, 217, 255, 0.4);
        }

        .subject-card h3 {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--light);
            transform: translateZ(30px);
        }

        .subject-card p {
            color: var(--gray);
            margin-bottom: 25px;
            font-size: 0.95rem;
            transform: translateZ(20px);
        }

        /* Trivia 3D Section Styles - New Style */
        .trivia-container {
            background: linear-gradient(135deg, rgba(10, 10, 26, 0.95), rgba(5, 5, 16, 0.95));
            border-radius: var(--radius);
            padding: 30px;
            margin: 40px 0;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            border: 2px solid rgba(0, 217, 255, 0.3);
            backdrop-filter: blur(20px);
            transform-style: preserve-3d;
            perspective: 1000px;
            transform: rotateX(5deg);
        }

        .trivia-header {
            text-align: center;
            margin-bottom: 30px;
            padding: 20px;
            background: linear-gradient(135deg, #1e3c72, #2a5298);
            color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            position: relative;
            transform: translateZ(30px);
        }

        .trivia-logo-container {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 15px;
        }

        .trivia-logo {
            height: 80px;
            width: auto;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
            filter: drop-shadow(0 0 10px rgba(0, 217, 255, 0.5));
        }

        .trivia-header h2 {
            font-size: 28px;
            margin-bottom: 10px;
            font-family: 'Orbitron', sans-serif;
        }

        .trivia-subtitle {
            font-size: 18px;
            opacity: 0.9;
        }

        .trivia-developer-info {
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 14px;
            opacity: 0.9;
        }

        .trivia-developer-info i {
            margin-right: 5px;
            color: var(--primary);
        }

        .trivia-timer-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(16, 18, 36, 0.8);
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(0, 217, 255, 0.2);
            transform: translateZ(20px);
        }

        .trivia-timer {
            font-size: 24px;
            font-weight: bold;
            color: #ff6b6b;
            background: rgba(255, 107, 107, 0.1);
            padding: 10px 20px;
            border-radius: 8px;
            font-family: 'Orbitron', sans-serif;
            text-shadow: 0 0 10px rgba(255, 107, 107, 0.5);
        }

        .trivia-progress {
            width: 200px;
            height: 12px;
            background-color: rgba(224, 224, 224, 0.1);
            border-radius: 6px;
            overflow: hidden;
        }

        .trivia-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            width: 0%;
            transition: width 0.5s ease;
            box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
        }

        .trivia-biodata-form {
            background: rgba(16, 18, 36, 0.8);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(0, 217, 255, 0.2);
            transform: translateZ(20px);
        }

        .trivia-form-group {
            margin-bottom: 20px;
        }

        .trivia-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--primary);
            font-family: 'Exo 2', sans-serif;
        }

        .trivia-input, .trivia-select {
            width: 100%;
            padding: 12px;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(0, 217, 255, 0.3);
            border-radius: 6px;
            font-size: 16px;
            transition: var(--transition);
            color: var(--light);
        }

        .trivia-input:focus, .trivia-select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
        }

        .trivia-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-block;
            width: 100%;
            font-family: 'Orbitron', sans-serif;
            letter-spacing: 1px;
        }

        .trivia-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 217, 255, 0.3);
        }

        .trivia-test-section {
            display: none;
            background: rgba(16, 18, 36, 0.8);
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(0, 217, 255, 0.2);
            transform: translateZ(20px);
        }

        .trivia-question-container {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .trivia-question-number {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            width: 30px;
            height: 30px;
            text-align: center;
            line-height: 30px;
            border-radius: 50%;
            margin-right: 10px;
            font-weight: bold;
            box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
        }

        .trivia-question-text {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 15px;
            display: inline-block;
            color: var(--light);
        }

        .trivia-option {
            margin-bottom: 10px;
            padding: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            color: var(--light);
        }

        .trivia-option:hover {
            background: rgba(0, 217, 255, 0.1);
            border-color: var(--primary);
        }

        .trivia-option.selected {
            background: rgba(0, 217, 255, 0.2);
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
        }

        .trivia-complex-options {
            margin-left: 20px;
        }

        .trivia-true-false-container {
            display: flex;
            gap: 20px;
        }

        .trivia-true-false-option {
            flex: 1;
            text-align: center;
            padding: 15px;
            background: rgba(255, 255, 255, 0.05);
            border: 2px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            color: var(--light);
        }

        .trivia-true-false-option:hover {
            background: rgba(0, 217, 255, 0.1);
        }

        .trivia-true-false-option.selected {
            background: rgba(0, 217, 255, 0.2);
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
        }

        .trivia-fill-in-input {
            width: 200px;
            padding: 10px;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(0, 217, 255, 0.3);
            border-radius: 6px;
            font-size: 16px;
            margin-top: 10px;
            color: var(--light);
        }

        .trivia-navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }

        .trivia-results-section {
            display: none;
            background: rgba(16, 18, 36, 0.8);
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
            border: 1px solid rgba(0, 217, 255, 0.2);
            transform: translateZ(20px);
        }

        .trivia-score-circle {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            margin: 0 auto 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            font-weight: bold;
            font-size: 24px;
        }

        .trivia-score-kurang {
            background: linear-gradient(135deg, #ffcccc, #cc0000);
            color: white;
            border: 8px solid #ff9999;
            box-shadow: 0 0 20px rgba(255, 0, 0, 0.5);
        }

        .trivia-score-cukup {
            background: linear-gradient(135deg, #fff3cc, #cc9900);
            color: white;
            border: 8px solid #ffd966;
            box-shadow: 0 0 20px rgba(255, 217, 0, 0.5);
        }

        .trivia-score-baik {
            background: linear-gradient(135deg, #d9f2d9, #2d862d);
            color: white;
            border: 8px solid #85e085;
            box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
        }

        .trivia-score-sangat-baik {
            background: linear-gradient(135deg, #cce6ff, #0066cc);
            color: white;
            border: 8px solid #80c1ff;
            box-shadow: 0 0 20px rgba(0, 150, 255, 0.5);
        }

        .trivia-score-value {
            font-size: 48px;
            line-height: 1;
        }

        .trivia-predikat {
            font-size: 28px;
            margin-bottom: 20px;
            color: var(--light);
        }

        .trivia-feedback {
            margin-top: 20px;
            padding: 20px;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 8px;
            text-align: left;
            border-left: 5px solid var(--primary);
        }

        .trivia-feedback h3 {
            color: var(--primary);
            margin-bottom: 10px;
            font-family: 'Orbitron', sans-serif;
        }

        .trivia-hidden {
            display: none;
        }

        .trivia-footer {
            text-align: center;
            margin-top: 30px;
            padding: 15px;
            color: var(--gray);
            font-size: 14px;
            border-top: 1px solid rgba(0, 217, 255, 0.2);
        }

        /* Footer */
        footer {
            background: linear-gradient(to bottom, rgba(10, 10, 26, 0.9), rgba(5, 5, 16, 1));
            color: white;
            padding: 80px 0 40px;
            margin-top: 100px;
            border-top: 1px solid rgba(0, 217, 255, 0.2);
            transform-style: preserve-3d;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 50px;
            margin-bottom: 50px;
            transform-style: preserve-3d;
        }

        .footer-column h3 {
            font-family: 'Orbitron', sans-serif;
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--primary);
            text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
            transform: translateZ(30px);
        }

        .footer-column p {
            color: var(--gray);
            margin-bottom: 25px;
            line-height: 1.8;
            transform: translateZ(20px);
        }

        .footer-links {
            list-style: none;
            transform-style: preserve-3d;
        }

        .footer-links li {
            margin-bottom: 12px;
            transform: translateZ(10px);
        }

        .footer-links a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
            text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
        }

        .social-icons {
            display: flex;
            gap: 20px;
            margin-top: 25px;
            transform-style: preserve-3d;
        }

        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: var(--card-bg);
            border-radius: 15px;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            transform: translateZ(20px);
            border: 1px solid rgba(0, 217, 255, 0.2);
        }

        .social-icons a:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            transform: translateZ(20px) translateY(-5px) rotateY(180deg);
            box-shadow: 0 10px 20px rgba(0, 217, 255, 0.3);
        }

        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(0, 217, 255, 0.1);
            color: var(--gray);
            font-size: 0.9rem;
            transform: translateZ(10px);
        }

        /* Responsive Design */
        @media (max-width: 1200px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .floating-cube {
                width: 350px;
                height: 350px;
            }
            
            .cube-face {
                width: 350px;
                height: 350px;
            }
            
            .face-front, .face-back, .face-right, .face-left, .face-top, .face-bottom {
                transform-origin: center;
            }
            
            .lumi-frame-container iframe {
                height: 550px;
            }
        }

        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: 90px;
                left: -100%;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 10, 26, 0.95);
                backdrop-filter: blur(20px);
                padding: 40px;
                transition: var(--transition);
                gap: 25px;
                border-bottom: 1px solid rgba(0, 217, 255, 0.2);
            }

            .nav-links.active {
                left: 0;
            }

            .hamburger {
                display: block;
            }

            .hero-text h1 {
                font-size: 3rem;
            }
            
            .hero-text h1 span {
                font-size: 2.5rem;
            }
            
            .section-title h2 {
                font-size: 2.8rem;
            }
            
            .subject-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .lumi-frame-container iframe {
                height: 450px;
            }
            
            .trivia-timer-container {
                flex-direction: column;
                gap: 15px;
            }
            
            .trivia-progress {
                width: 100%;
            }
            
            .trivia-true-false-container {
                flex-direction: column;
            }
        }

        @media (max-width: 768px) {
            .hero-text h1 {
                font-size: 2.5rem;
            }
            
            .hero-text h1 span {
                font-size: 2rem;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .subject-grid {
                grid-template-columns: 1fr;
            }
            
            .floating-cube {
                width: 300px;
                height: 300px;
            }
            
            .cube-face {
                width: 300px;
                height: 300px;
                padding: 20px;
            }
            
            .lumi-frame-container iframe {
                height: 350px;
            }
            
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            
            .trivia-header h2 {
                font-size: 24px;
            }
            
            .trivia-logo {
                height: 60px;
            }
            
            .trivia-navigation {
                flex-direction: column;
                gap: 10px;
            }
            
            .trivia-navigation .trivia-btn {
                width: 100%;
                text-align: center;
            }
        }

        @media (max-width: 576px) {
            .hero-text h1 {
                font-size: 2rem;
            }
            
            .hero-text h1 span {
                font-size: 1.6rem;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .logo-text .main-text {
                font-size: 1.6rem;
            }
            
            .floating-cube {
                width: 250px;
                height: 250px;
            }
            
            .cube-face {
                width: 250px;
                height: 250px;
            }
            
            .lumi-frame-container iframe {
                height: 300px;
            }
            
            .hero-buttons {
                flex-direction: column;
            }
            
            .hero-buttons .btn {
                width: 100%;
            }
            
            .trivia-header h2 {
                font-size: 20px;
            }
            
            .trivia-developer-info {
                font-size: 12px;
            }
        }

        /* 3D Effects for Scroll */
        .scroll-effect {
            opacity: 0;
            transform: translateY(50px) translateZ(-50px);
            transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .scroll-effect.visible {
            opacity: 1;
            transform: translateY(0) translateZ(0);
        }

        /* Particle Effects */
        .particles {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            pointer-events: none;
            z-index: -1;
        }

        .particle {
            position: absolute;
            width: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 50%;
            animation: particleMove 15s infinite linear;
        }

        @keyframes particleMove {
            0% {
                transform: translateY(100vh) translateX(0);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateY(-100px) translateX(100px);
                opacity: 0;
            }
        }

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #ffffff;
    min-width: 160px;
    box-shadow: 0px 8px 16px rgba(0,0,0,0.2);
    z-index: 1;
    border-radius: 4px;
}

.dropdown-content a {
    color: #333;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 14px;
}

.dropdown-content a:hover {
    background-color: #f1f1f1;
    color: #007bff; /* Sesuaikan dengan warna tema Anda */
}

/* Munculkan menu saat kursor di atas tulisan RUANG */
.dropdown:hover .dropdown-content {
    display: block;
}

.dropbtn i {
    margin-left: 5px;
    font-size: 12px;
}

/* Helper class untuk perataan tengah */
.center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 0 auto;
}

/* Mengambil properti container dari index.html */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto; /* Ini yang membuat konten berada di tengah secara horizontal */
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* Mengambil properti section-title dari index.html */
.section-title {
    text-align: center;
    margin-bottom: 80px;
    transform-style: preserve-3d;
}