/* --- 1. Variabel dan Reset Dasar --- */
:root {
    --color-dark-bg: #111827; /* Latar belakang lebih gelap */
    --color-secondary-bg: #1F2937; /* Background Card/Section */
    --color-neon-cyan: #00FFFF; /* Sian/Hijau Neon */
    --color-neon-magenta: #ffae00; /* Magenta/kuning Neon */
    --color-text-light: #E5E7EB;
    --color-input-bg: #2B3544;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-dark-bg);
    color: var(--color-text-light);
    line-height: 1.6;
    padding: 30px;
    /* Menambahkan background sirkuit jika ada gambar: background-image: url('circuit.jpg'); */
}

/* Logo */
.logo {
    font-family: 'Michroma', sans-serif; /* Font Sci-Fi */
    font-size: 1.8em;
    padding: 10px 0;
}
.neon-text {
    color: var(--color-neon-cyan);
    text-shadow: 0 0 5px var(--color-neon-cyan);
}

/* --- 2. Layout Utama (Desktop: 2 Kolom) --- */
.container {
    display: flex;
    max-width: 1400px; /* Ukuran lebih lebar untuk prototype */
    margin: 0 auto;
    gap: 40px;
}

.booking-form-section, .list-booking-section {
    flex: 1; 
    background-color: var(--color-secondary-bg);
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5); /* Shadow lebih kuat */
}

.section-title {
    color: var(--color-text-light);
    border-bottom: 2px solid var(--color-neon-magenta); /* Menggunakan Magenta untuk garis bawah */
    padding-bottom: 15px;
    margin-bottom: 30px;
    font-weight: 600;
}

/* --- 3. Gaya Form Input --- */
.input-field {
    width: 100%;
    padding: 18px;
    margin-bottom: 20px;
    border: 1px solid #4B5563;
    border-radius: 10px;
    background-color: var(--color-input-bg);
    color: var(--color-text-light);
    transition: border-color 0.4s, box-shadow 0.4s;
    font-size: 1em;
}

.input-field:focus {
    border-color: var(--color-neon-cyan);
    outline: none;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.6); /* Efek glow saat focus */
}

/* --- 4. Card Selection Ruangan --- */
.room-selection {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 kolom untuk 3 tipe ruangan */
    gap: 15px;
    margin-bottom: 25px;
}

.room-card {
    padding: 25px 15px;
    border-radius: 10px;
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s;
    background-color: #2B3544;
}

.room-card h3 {
    margin-bottom: 5px;
}

.room-card p {
    font-size: 0.8em;
    color: #9CA3AF;
}

.room-card input[type="radio"] { display: none; }

/* Style Card saat dipilih (Menggunakan Border Neon yang kuat) */
.room-card input[type="radio"]:checked ~ h3 {
    color: var(--color-neon-cyan);
    text-shadow: 0 0 5px var(--color-neon-cyan);
}

.room-card input[type="radio"]:checked {
    border-color: var(--color-neon-cyan);
    box-shadow: 0 0 18px rgba(0, 255, 255, 0.7);
}

/* --- 5. Durasi & Biaya --- */
.duration-selection {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
}

.duration-input {
    width: 60px;
    text-align: center;
    padding: 10px 5px;
    border-radius: 5px;
    background-color: var(--color-input-bg);
    color: var(--color-text-light);
    border: 1px solid #4B5563;
}

.total-cost-display {
    text-align: center;
    font-size: 2em; /* Lebih besar */
    font-weight: 700;
    margin-bottom: 30px;
    padding: 10px;
}

.neon-cost {
    color: var(--color-neon-cyan);
    /* Multiple layer text shadow untuk efek glow yang intens */
    text-shadow: 0 0 5px var(--color-neon-cyan), 0 0 15px var(--color-neon-cyan), 0 0 30px rgba(0, 255, 255, 0.8);
}

.booking-button {
    width: 100%;
    padding: 20px;
    background-color: var(--color-neon-cyan);
    color: var(--color-dark-bg);
    border: none;
    border-radius: 10px;
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.neon-glow:hover {
    background-color: #00E5E5;
    /* Efek glow berlapis pada tombol */
    box-shadow: 0 0 10px var(--color-neon-cyan), 0 0 25px var(--color-neon-cyan);
}

/* --- 6. List Booking Card (Kolom Kanan) --- */
.booking-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.booking-card {
    background-color: #2B3544;
    padding: 25px;
    border-radius: 10px;
    border: 1px solid #4B5563;
    transition: box-shadow 0.3s;
}

/* Efek Border Neon untuk Status */
.neon-border-cyan {
    border: 2px solid var(--color-neon-cyan);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.7);
}

.neon-border-magenta {
    border: 2px solid var(--color-neon-magenta);
    box-shadow: 0 0 12px rgba(255, 0, 255, 0.7);
}

.booking-card h4 {
    color: var(--color-neon-cyan); /* Warna Judul Card */
    margin-bottom: 8px;
    font-weight: 600;
}

.status {
    font-size: 0.9em;
    color: #9CA3AF;
}

.active-dot {
    color: var(--color-neon-magenta);
    font-weight: 600;
}

/* --- 7. Responsive Design (Mobile View) --- */
@media (max-width: 992px) { /* Batas responsif lebih tinggi agar tampilan tablet juga ditumpuk */
    
    .container {
        flex-direction: column;
        padding: 0 15px;
    }

    .room-selection {
        grid-template-columns: repeat(1, 1fr); /* Tumpuk semua kartu ruangan */
    }

    .booking-form-section, .list-booking-section {
        padding: 25px;
        margin-bottom: 20px;
    }
}