@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&family=Roboto:wght@300;400;500;700&display=swap');
        
        body {
            font-family: 'Roboto', sans-serif;
            font-weight: 400;
            line-height: 1.6;
            background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 30%, #16213e 70%, #0f3460 100%);
            color: #e2e8f0;
            overflow-x: hidden;
            min-height: 100vh;
            scroll-behavior: smooth;
            position: relative;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 15% 15%, rgba(0, 162, 255, 0.03) 0%, transparent 25%),
                radial-gradient(circle at 85% 85%, rgba(0, 89, 255, 0.03) 0%, transparent 25%),
                radial-gradient(circle at 50% 20%, rgba(248, 248, 255, 0.02) 0%, transparent 30%);
            pointer-events: none;
            z-index: -1;
        }

        /* Basic animations for a cleaner feel */
        .fade-in-up {
            opacity: 1; /* Langsung tampil tanpa animasi */
        }

        .fade-in {
            opacity: 1; /* Langsung tampil tanpa animasi */
        }

        @keyframes fadeIn {
            to {
                opacity: 1;
            }
        }

        .loading-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 30%, #16213e 70%, #0f3460 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 999;
            transition: opacity 0.5s ease-in-out;
        }

        .loading-screen.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .loading-container {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 100%;
            padding: 2rem;
        }

        .loading-content {
            text-align: center;
            max-width: 400px;
            width: 100%;
        }

        .loading-spinner {
            width: 80px;
            height: 80px;
            border: 4px solid rgba(0, 162, 255, 0.2);
            border-top: 4px solid #00a2ff;
            border-right: 4px solid transparent;
            border-radius: 50%;
            box-shadow: 0 0 30px rgba(0, 162, 255, 0.6);
            animation: spin 1s linear infinite;
            margin: 0 auto 2rem auto;
        }

        .loading-title {
            font-family: 'Poppins', sans-serif;
            font-size: 1.5rem;
            font-weight: 600;
            color: #00a2ff;
            margin-bottom: 1.5rem;
            animation: pulse 2s ease-in-out infinite;
        }

        .loading-progress {
            width: 100%;
            height: 4px;
            background: rgba(0, 162, 255, 0.2);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        .loading-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, #00a2ff, #0059ff);
            border-radius: 2px;
            animation: loading 3s ease-in-out infinite;
        }

        .loading-subtitle {
            font-family: 'Roboto', sans-serif;
            font-size: 0.875rem;
            color: rgba(59, 130, 246, 0.7);
            margin: 0;
        }
        
        .loading-screen::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%2300a2ff' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
            opacity: 0.5;
            z-index: -1;
        }

        .glass-card {
    background: rgba(6, 13, 34, 0.75);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 162, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 162, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.glass-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 162, 255, 0.1), transparent);
    transition: 0.5s;
    z-index: 1;
    pointer-events: none;
}

.glass-card:hover, .glass-card-hover {
    border-color: rgba(0, 162, 255, 0.4);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 162, 255, 0.1), 0 0 15px rgba(0, 162, 255, 0.2);
    transform: none !important;
}
        
        .glass-card:hover::after {
            left: 100%;
        }

        /* Enhanced animations - plane movement enabled, vertical movement disabled */
        .floating-plane {
            filter: drop-shadow(0 0 8px rgba(0, 162, 255, 0.5));
        }
        
        .animate-float-horizontal {
            animation: float-horizontal 25s linear infinite; /* Re-enabled plane movement */
        }
        
        .floating-cloud {
            /* animation: float-simple 15s ease-in-out infinite; - disabled */
            opacity: 0.15;
        }
        
        .runway-light {
            position: absolute;
            width: 4px;
            height: 15px;
            background: rgba(0, 162, 255, 0.7);
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(0, 162, 255, 0.8), 0 0 20px rgba(0, 162, 255, 0.4);
            animation: pulse 2s infinite alternate;
            opacity: 0.5;
            transition: opacity 0.3s ease, box-shadow 0.3s ease;
        }
        
        .runway-light.active {
            opacity: 1;
            box-shadow: 0 0 15px rgba(0, 162, 255, 1), 0 0 30px rgba(0, 162, 255, 0.7);
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* Keyframes - plane movement enabled, vertical movement disabled */
        @keyframes float-horizontal {
            0% { transform: translateX(-100vw); }
            25% { transform: translateX(-50vw); }
            50% { transform: translateX(0vw); }
            75% { transform: translateX(50vw); }
            100% { transform: translateX(100vw); }
        }
        
        /* @keyframes float-simple - disabled (vertical movement) */
        
        @keyframes loading {
            0% { width: 0%; }
            100% { width: 100%; }
        }
        
        @keyframes pulse {
            0% { opacity: 0.4; height: 15px; }
            100% { opacity: 1; height: 20px; }
        }
        
        @keyframes radar-beam {
            0% { transform: rotate(0deg); opacity: 1; }
            50% { opacity: 0.5; }
            100% { transform: rotate(360deg); opacity: 1; }
        }
        
        @keyframes radar-ping {
            0% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.2); opacity: 0.8; }
            100% { transform: scale(1); opacity: 1; }
        }

        /* Custom scrollbar for better aesthetics */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: rgba(6, 13, 34, 0.8); }
        ::-webkit-scrollbar-thumb { 
            background: linear-gradient(to bottom, rgba(0, 162, 255, 0.6), rgba(0, 89, 255, 0.8)); 
            border-radius: 3px; 
        }
        ::-webkit-scrollbar-thumb:hover { 
            background: linear-gradient(to bottom, rgba(0, 162, 255, 0.8), rgba(0, 89, 255, 1)); 
            box-shadow: 0 0 5px rgba(0, 162, 255, 0.5);
        }

        /* General styling for sections and titles */
        .section-title {
            font-family: 'Poppins', sans-serif;
            font-weight: 700;
            font-size: clamp(2.5rem, 6vw, 4rem);
            background: linear-gradient(135deg, #00a2ff 0%, #0077ff 50%, #0059ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(0, 162, 255, 0.3);
            letter-spacing: 0.5px;
        }
        
        .ranking-count {
            color: #00ffaa;
            background-color: rgba(0, 255, 170, 0.15);
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-weight: 700;
            box-shadow: 0 0 10px rgba(0, 255, 170, 0.2);
        }

        /* Ranking item hover and selection effects */
        .ranking-item {
            transition: all 0.2s ease;
        }

        .ranking-item:hover {
            transform: translateX(4px);
        }

        .ranking-item.selected {
            background: rgba(0, 162, 255, 0.2) !important;
            border-color: rgba(0, 162, 255, 0.5) !important;
            box-shadow: 0 0 15px rgba(0, 162, 255, 0.3);
        }

        /* Chart loading overlay animation */
        .chart-loading-overlay {
            animation: fadeIn 0.3s ease-in-out;
        }

        /* Badge pulse animation */
        @keyframes badgePulse {
            0%, 100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.05);
                opacity: 0.8;
            }
        }

        .badge-pulse {
            animation: badgePulse 2s ease-in-out;
        }

        /* Chart title transition */
        .chart-title-transition {
            transition: all 0.3s ease-in-out;
        }

        /* Enhanced chart container */
        .chart-container {
            position: relative;
            overflow: hidden;
        }

        .chart-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 162, 255, 0.1), transparent);
            animation: chartShimmer 3s infinite;
            pointer-events: none;
            z-index: 1;
        }

        @keyframes chartShimmer {
            0% {
                left: -100%;
            }
            100% {
                left: 100%;
            }
        }
        
        /* Runway effect for sections */
        .runway {
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: rgba(0, 162, 255, 0.3);
            z-index: -1;
        }
        
        /* Radar animation */
        .radar-container {
            position: absolute;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            border: 1px solid rgba(0, 162, 255, 0.3);
            opacity: 0.5;
            overflow: hidden;
        }
        
        .radar-beam {
            position: absolute;
            top: 0;
            left: 50%;
            width: 50%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 162, 255, 0.5));
            transform-origin: left center;
            opacity: 0;
            transition: opacity 0.5s ease;
        }
        
        .radar-beam.active {
            animation: radar-beam 4s linear infinite;
            opacity: 1;
        }
        
        /* Data grid styling */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
        }
        
        .data-item {
            padding: 1rem;
            border-radius: 0.5rem;
            background: rgba(0, 162, 255, 0.05);
            border: 1px solid rgba(0, 162, 255, 0.1);
            transition: all 0.3s ease;
        }
        
        .data-item:hover {
            background: rgba(0, 162, 255, 0.1);
            border-color: rgba(0, 162, 255, 0.3);
        }

        /* Optimasi performa untuk animasi */
        .loading-spinner,
        .floating-plane,
        .runway-light,
        .glass-card,
        .stars,
        .stars2,
        .stars3,
        .moon {
            will-change: transform;
            transform: translateZ(0); /* Force hardware acceleration */
        }
        
        /* Optimasi untuk chart rendering */
        canvas {
            will-change: transform;
        }

        /* Font utilities untuk konsistensi */
        .font-heading {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
        }
        
        .font-body {
            font-family: 'Roboto', sans-serif;
            font-weight: 400;
        }
        
        .font-display {
            font-family: 'Poppins', sans-serif;
            font-weight: 700;
        }
        
        /* Typography improvements */
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            line-height: 1.3;
        }
        
        p, span, div {
            font-family: 'Roboto', sans-serif;
            line-height: 1.6;
        }

        /* Date picker styling */
        input[type="date"] {
            color-scheme: dark;
        }
        
        input[type="date"]::-webkit-calendar-picker-indicator {
            filter: invert(1);
            cursor: pointer;
        }
        
        input[type="date"]::-webkit-datetime-edit-text {
            color: #94a3b8;
        }
        
        input[type="date"]::-webkit-datetime-edit-month-field,
        input[type="date"]::-webkit-datetime-edit-day-field,
        input[type="date"]::-webkit-datetime-edit-year-field {
            color: #e2e8f0;
        }

        /* Night Sky with Stars */
        .stars-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -5;
        }

        .stars, .stars2, .stars3 {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: transparent;
        }

        .stars {
            background-image: 
                radial-gradient(2px 2px at 20px 30px, #eee, transparent),
                radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
                radial-gradient(1px 1px at 90px 40px, #fff, transparent),
                radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
                radial-gradient(2px 2px at 160px 30px, #ddd, transparent);
            background-repeat: repeat;
            background-size: 200px 100px;
            /* animation: sparkle 3s linear infinite; - disabled */
        }

        .stars2 {
            background-image: 
                radial-gradient(1px 1px at 50px 20px, #fff, transparent),
                radial-gradient(1px 1px at 100px 60px, rgba(255,255,255,0.7), transparent),
                radial-gradient(2px 2px at 150px 10px, #eee, transparent),
                radial-gradient(1px 1px at 180px 50px, rgba(255,255,255,0.5), transparent);
            background-repeat: repeat;
            background-size: 250px 120px;
            /* animation: sparkle 4s linear infinite reverse; - disabled */
        }

        .stars3 {
            background-image: 
                radial-gradient(1px 1px at 30px 80px, #fff, transparent),
                radial-gradient(2px 2px at 80px 20px, rgba(255,255,255,0.9), transparent),
                radial-gradient(1px 1px at 120px 70px, #ddd, transparent),
                radial-gradient(1px 1px at 170px 40px, rgba(255,255,255,0.6), transparent);
            background-repeat: repeat;
            background-size: 300px 150px;
            /* animation: sparkle 5s linear infinite; - disabled */
        }

        @keyframes sparkle {
            0%, 100% { 
                opacity: 1; 
                transform: scale(1);
            }
            50% { 
                opacity: 0.3; 
                transform: scale(0.8);
            }
        }

        /* Shooting stars */
        .shooting-star {
            position: absolute;
            width: 2px;
            height: 2px;
            background: linear-gradient(45deg, #fff, transparent);
            border-radius: 50%;
            animation: shooting 3s linear infinite;
        }

        .shooting-star::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 50px;
            height: 1px;
            background: linear-gradient(90deg, #fff, transparent);
            transform: translateX(-50px);
        }

        @keyframes shooting {
            0% {
                transform: translateX(-100px) translateY(-100px);
                opacity: 1;
            }
            100% {
                transform: translateX(100vw) translateY(100vh);
                opacity: 0;
            }
        }

        /* Moon */
        .moon {
            position: absolute;
            top: 10%;
            right: 15%;
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #f8f8ff 0%, #e6e6fa 100%);
            border-radius: 50%;
            box-shadow: 
                0 0 20px rgba(248, 248, 255, 0.3),
                0 0 40px rgba(248, 248, 255, 0.2),
                inset -10px -10px 20px rgba(0, 0, 0, 0.1);
            animation: moonGlow 4s ease-in-out infinite alternate;
        }

        .moon-crater {
            position: absolute;
            background: rgba(0, 0, 0, 0.1);
            border-radius: 50%;
        }

        .moon-crater-1 {
            width: 12px;
            height: 12px;
            top: 20px;
            left: 25px;
        }

        .moon-crater-2 {
            width: 8px;
            height: 8px;
            top: 45px;
            left: 15px;
        }

        .moon-crater-3 {
            width: 6px;
            height: 6px;
            top: 35px;
            left: 50px;
        }

        @keyframes moonGlow {
            0% {
                box-shadow: 
                    0 0 20px rgba(248, 248, 255, 0.3),
                    0 0 40px rgba(248, 248, 255, 0.2),
                    inset -10px -10px 20px rgba(0, 0, 0, 0.1);
            }
            100% {
                box-shadow: 
                    0 0 30px rgba(248, 248, 255, 0.5),
                    0 0 60px rgba(248, 248, 255, 0.3),
                    inset -10px -10px 20px rgba(0, 0, 0, 0.1);
            }
        }

/* Styles for choice cards on utama.html */
:root {
  --primary: #00a2ff;
  --accent: #00ffaa;
  --bg: #0f172a;
  --card: rgba(255,255,255,0.06);
  --card-border: rgba(0,162,255,0.2);
  --text: #e2e8f0;
  --muted: #94a3b8;
}

.choice-card { display: block; position: relative; padding: 24px; background: var(--card); border: 1px solid var(--card-border); border-radius: 16px; text-decoration: none; color: var(--text); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; backdrop-filter: blur(12px); }
.choice-card:hover { transform: translateY(-4px); border-color: rgba(0,162,255,.5); box-shadow: 0 10px 24px rgba(0,0,0,.35), 0 0 0 1px rgba(0,162,255,.15) inset; }
.choice-glow { position:absolute; inset:-1px; border-radius:16px; background: radial-gradient(500px 200px at 20% 0%, rgba(0,162,255,.12), transparent 60%), radial-gradient(500px 200px at 80% 100%, rgba(0,255,170,.10), transparent 60%); opacity:.6; pointer-events:none; }
.choice-icon { width: 52px; height: 52px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 12px; }
.choice-title { font-weight: 700; font-size: 1.25rem; margin: 6px 0; }
.choice-desc { color: var(--muted); font-size: .95rem; }
.choice-cta { margin-top: 14px; display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 600; }

/* Responsive tweaks for choice cards */
@media (max-width: 640px) {
  .choice-card { padding: 18px; }
  .choice-title { font-size: 1.1rem; }
}