:root {
    --bg-color: #1a1d23;
    --card-bg: #24292e;
    --text-primary: #ffffff;
    --text-secondary: #9da5b1;
    --accent-gradient: linear-gradient(90deg, #0d47a1, #4a148c);
    --btn-gradient: linear-gradient(90deg, #43a047, #66bb6a);
    --border-color: #30363d;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
}

/* Header */
.hero-section {
    background: var(--accent-gradient);
    padding: 40px 20px;
    text-align: center;
    position: relative;
}

.toggle-container {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 12px;
}

/* Layout Grid */
.container {
    max-width: 1000px;
    margin: 30px auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 0 20px;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

h2 { margin-top: 0; font-size: 1.2rem; }
p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; }

/* Form Elements */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-size: 0.85rem; }

input[type="text"], input[type="email"], select {
    width: 100%;
    padding: 10px;
    background: #1c2128;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: white;
    box-sizing: border-box;
}

.btn-register {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: var(--btn-gradient);
    color: white;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

/* Table Section */
.table-section { grid-template-columns: 1fr; }
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th { text-align: left; color: var(--text-secondary); font-size: 0.8rem; border-bottom: 1px solid var(--border-color); padding: 10px; }
td { padding: 12px 10px; border-bottom: 1px solid #2d333b; font-size: 0.9rem; }

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.live-update { font-size: 0.75rem; color: var(--text-secondary); }


/* Pengaturan warna saat Light Mode aktif */
body.light-mode {
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-primary: #1a1d23;
    --text-secondary: #5f6368;
    --border-color: #e0e0e0;
}

/* input juga berubah warna saat light mode agar teksnya terlihat */
body.light-mode input, 
body.light-mode select {
    background: #ffffff;
    color: #1a1d23;
    border: 1px solid #ccc;
}

/* Media Query untuk HP (Layar di bawah 768px) */
@media (max-width: 768px) {
    .container {
        /* Ubah grid dari 2 kolom menjadi 1 kolom saja */
        grid-template-columns: 1fr; 
        margin: 15px auto;
        padding: 0 15px;
    }

    .hero-section {
        padding: 30px 15px;
    }

    h1 {
        font-size: 1.5rem; /* Perkecil ukuran judul agar tidak tumpuk */
    }

    /* Agar tabel bisa di-scroll secara horizontal jika kolomnya terlalu panjang */
    .table-card {
        overflow-x: auto;
    }

    table {
        min-width: 500px; /* Memastikan tabel punya ruang minimum */
    }
}