* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #25eb28;
    --secondary-color: #05a417;
    --dark-color: #031404; /* PERBAIKAN: Kembali ke Hijau Gelap Premium */
    --light-color: #f8fafc;
    --text-muted: #64748b;

    --bg-star-color: rgba(255, 255, 255, 0.8);
    --bg-glow-color: rgba(37, 235, 40, 0.2); 
    --speed-slow: 20s;
    --speed-medium: 10s;
}

body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--dark-color); /* PERBAIKAN: Menggunakan Hijau Gelap */
    background-size: cover;          
    background-position: center;     
    background-repeat: no-repeat;    
    background-attachment: fixed;    
    overflow-x: hidden; 
    position: relative;
}

/* EFEK ANIMASI SALJU / BINTANG JATUH */
body::before,
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    pointer-events: none;

    background-image:
       radial-gradient(2px 2px at 20px 30px, var(--bg-star-color), transparent),
       radial-gradient(3px 3px at 40px 70px, var(--light-color), transparent),
       radial-gradient(2px 2px at 50px 160px, var(--bg-star-color), transparent),
       radial-gradient(2.5px 2.5px at 90px 40px, var(--primary-color), transparent), 
       radial-gradient(2px 2px at 130px 80px, var(--bg-star-color), transparent);
    background-size: 200px 200px; 
}

body::before {
    animation: bintangTurun var(--speed-slow) linear infinite;
    opacity: 0.6;
}

body::after {
    animation: bintangTurun var(--speed-medium) linear infinite;
    background-position: 50px 50px;
    opacity: 0.4;
}

@keyframes bintangTurun {
     0% {
        background-position: 0 0;
    }
    100% {
         background-position: 0 200px;  
    }
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

/* STYLING TOMBOL-TOMBOL (BUTTONS) */
.btn {
    display: inline-block;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 10005;
    background-color: var(--primary-color);
    color: var(--dark-color); 
    border: 2px solid var(--primary-color);
}

.btn:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--light-color);
    box-shadow: 0 0 10px var(--primary-color); 
}

.liga-white {
    color: #fff;
}

.sb-green {
color: #00fd15;
}

.btn-secondary {
    display: inline-block;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: bold;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    border-radius: 4px;     
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
    position: relative;
    z-index: 10005;          
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--dark-color); 
    box-shadow: 0 0 10px var(--primary-color); 
}

/* ANIMASI PULSE BERDENYUT UNTUK TOMBOL HERO */
.btn-pulse {
    animation: denyutTombol 2s infinite;
}

@keyframes denyutTombol {
    0% { box-shadow: 0 0 0 0 rgba(37, 235, 40, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(37, 235, 40, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 235, 40, 0); }
}

/* NAVBAR / HEADER */
header {
    background: #1c2839;
    padding: 20px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.header-buttons {
    display: flex;
    gap: 10px; 
    align-items: center;
}

.nav-container .btn {
    position: relative;
    z-index: 10005;
}

/* LAYOUT 2 KOLOM (HERO SECTION SPLIT) */
.hero {
    padding: 60px 0;
    color: var(--light-color);
}

.hero-split-container {
    display: flex;
    align-items: center; 
    justify-content: center;
    gap: 40px; 
    max-width: 1200px; 
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

/* Kolom Kiri: Mengunci ukuran box gambar persegi 500x500 */
.kolom-kiri {
    flex: 1;
    max-width: 500px; 
    width: 100%;
}

.promo-image-wrapper {
    width: 100%;
    max-width: 500px;
    height: 500px; /* PERBAIKAN: Ukuran dikunci kotak seimbang */
    border-radius: 12px; 
    overflow: hidden; 
    box-shadow: 0 10px 30px rgba(37, 235, 40, 0.3);
    margin: 0 auto;
}

.img-statis {
    width: 100%;
    height: 100%; /* PERBAIKAN: Mengikuti tinggi pembungkus persegi */
    display: block;
    object-fit: cover; 
}

/* Kolom Kanan: Tempat Judul H1 & Deskripsi */
.kolom-kanan {
    flex: 1;
    max-width: 550px; 
    text-align: left; 
}

.kolom-kanan .hero-title {
    font-size: 1.8rem;
    color: #fff;
    margin: 0 0 15px 0;
    font-weight: 800;
    line-height: 1.4;
    text-shadow: 0 0 15px rgba(37, 235, 40, 0.3);
}

.garis-pembatas-kiri {
    border: none;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    margin: 15px 0 20px 0;
    width: 150px; 
}

.kolom-kanan .hero-subtitle {
    font-size: 16px; /* PERBAIKAN: Disesuaikan agar proporsional */
    color: #cbd5e1;
    line-height: 1.7;
    margin-bottom: 25px;
}

.kolom-kanan .hero-subtitle strong {
    color: var(--primary-color);
}

.kolom-kanan .hero-action {
    text-align: left;
    margin: 0;
}

/* KEUNGGULAN / FEATURES SECTION (MODERN GELAP) */
.features {
    padding: 80px 0;
    background-color: rgba(30, 41, 59, 0.3); 
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    font-weight: 700;
    color: var(--light-color);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background: #1e293b;
    border: 1px solid rgba(37, 235, 40, 0.1);
    padding: 30px;
    border-radius: 12px;
    transition: transform 0.3s, border-color 0.3s;
    text-align: center;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.card h3 {
    margin-bottom: 10px;
    font-size: 20px;
    color: #fff;
}

.card p {
    color: var(--light-color);
    font-size: 14px;
    line-height: 1.5;
}

/* TESTIMONI SECTION (MODERN GELAP) */
.testimonials {
    padding: 80px 0;
    background: transparent;
}

.testimonial-box {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border-left: 4px solid var(--primary-color);
    padding: 40px;
    border-radius: 12px;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.testimonial-text {
    font-style: italic;
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--light-color);
    line-height: 1.6;
}

.client-name {
    font-weight: 700;
    color: var(--primary-color);
}

/* PREMIUM FOOTER UTAMA (RATA TENGAH) */
.footer-utama {
    background-color: #031404; 
    padding: 50px 20px;
    text-align: center;
    border-top: 2px solid var(--primary-color); 
    position: relative;
    z-index: 2; 
    width: 100%;
    box-sizing: border-box;
}

.footer-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.footer-text {
    color: var(--light-color);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 25px;
    text-align: center;
}

.footer-action {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: 20px;
}

.copyright {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 15px;
    letter-spacing: 0.5px;
    text-align: center;
}

/* ==========================================================================
   PENGATURAN MEDIA QUERIES RESPONSIVE MOBILE (Wajib di Paling Bawah)
   ========================================================================== */
@media (max-width: 992px) {
    .hero-split-container {
        flex-direction: column; 
        gap: 25px;
    }
    
    .kolom-kanan {
        max-width: 640px;
        text-align: center; 
    }

    /* PERBAIKAN: Gambar otomatis berbentuk persegi di HP secara proporsional */
    .promo-image-wrapper {
        max-width: 100%;
        height: auto;  
        aspect-ratio: 1 / 1; 
    }

    .img-statis {
        height: 100%;
    }

    .garis-pembatas-kiri {
        margin: 15px auto;
        background: linear-gradient(90deg, transparent, var(--primary-color), transparent); 
    }

    .kolom-kanan .hero-action {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .section-title { font-size: 26px; }
}

@media (max-width: 480px) {
    .header-buttons {
        gap: 5px;
    }
    
    .btn-secondary, .nav-container .btn {
        padding: 6px 12px !important; 
        font-size: 12px !important;   
    }

    .kolom-kanan .hero-title {
        font-size: 1.4rem;
    }

    .footer-utama {
        padding: 40px 15px;
    }

    .footer-text {
        font-size: 13px;
        line-height: 1.6;
    }
}