body {
    font-family: 'Poppins', sans-serif;
    height: 100vh;
    overflow: hidden;
    background-color: #000;
}

/* --- BACKGROUND CAROUSEL (Tetap Sama) --- */
#bgCarousel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.carousel-item {
    height: 100vh;
    width: 100%;
    background-repeat: no-repeat;
    background-position: center center; 
    background-size: cover; 
    animation: zoomPan 20s infinite alternate linear;
}

@keyframes zoomPan {
    0% { transform: scale(1); background-position: 0% 50%; }
    50% { transform: scale(1.1); background-position: 100% 50%; }
    100% { transform: scale(1); background-position: 0% 50%; }
}

/* Overlay Hitam (0.8 Sesuai Request) */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8) !important; /* Gelap pekat */
    z-index: 0;
}

/* --- LOGIN CARD --- */
.login-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 20px;
}

.card-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    padding: 40px 30px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    color: white;
}

/* Judul & Ikon nuansa BIRU (Cyber/Tech) */
.card-glass h2 {
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: 5px;
    /* Ubah Shadow jadi Biru Cyan */
    text-shadow: 0 0 15px rgba(13, 202, 240, 0.8); 
}

/* Kita perlu menargetkan ikon pesawat di HTML via CSS ini agar warnanya berubah */
.card-glass i {
    color: #0dcaf0 !important; /* Biru Cyan Terang */
    text-shadow: 0 0 15px rgba(13, 202, 240, 0.6);
}

.card-glass p {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 30px;
}

/* --- FORM ELEMENTS --- */
.form-control {
    background: rgba(0, 0, 0, 0.4); /* Background input lebih gelap */
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: white;
    padding: 12px 20px;
    margin-bottom: 15px;
    transition: 0.3s;
}

/* Saat diklik, Border jadi BIRU */
.form-control:focus {
    background: rgba(0, 0, 0, 0.6);
    color: white;
    /* Glow Biru Cyan */
    box-shadow: 0 0 15px rgba(13, 202, 240, 0.4); 
    border: 1px solid #0dcaf0;
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

/* --- TOMBOL (ORANGE/FIRE) --- */
/* Tombol dibuat Orange supaya kontras dan 'memanggil' untuk diklik */
.btn-custom {
    /* Gradasi Orange ke Kuning-Orange */
    background: linear-gradient(45deg, #ff6b6b, #ffa502); 
    border: none;
    border-radius: 50px;
    padding: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    width: 100%;
    margin-top: 10px;
    transition: all 0.3s ease;
    /* Shadow Orange */
    box-shadow: 0 5px 15px rgba(255, 165, 2, 0.4); 
    color: white;
}

.btn-custom:hover {
    transform: translateY(-2px);
    /* Shadow makin menyala saat hover */
    box-shadow: 0 10px 25px rgba(255, 107, 107, 0.6);
    background: linear-gradient(45deg, #ff4757, #ff7f50);
}

/* Link Hover jadi BIRU */
.links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s;
}

.links a:hover {
    color: #0dcaf0; /* Biru Cyan */
    text-shadow: 0 0 5px rgba(13, 202, 240, 0.5);
}


/* Animasi Fade In */
.fade-in {
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}