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

:root {
    --primary-color: #2c3e50;
    --sidebar-bg: #1a252f;
    --bg-color: #f4f6f9;
    --white: #ffffff;
    --success: #27ae60;
    --border-color: #e0e0e0;
    --text-dark: #333;
    --text-muted: #777;
}

body {
    display: flex;
    background-color: var(--bg-color);
    height: 100vh;
}

/* --- SIDEBAR --- */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--white);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 20px;
    background-color: var(--primary-color);
    text-align: center;
}

.sidebar-menu {
    list-style: none;
    margin-top: 20px;
}

.sidebar-menu li a {
    display: block;
    color: var(--white);
    text-decoration: none;
    padding: 15px 25px;
    transition: 0.3s;
}

.sidebar-menu li a:hover, .sidebar-menu li a.active {
    background-color: var(--primary-color);
    border-left: 4px solid var(--success);
}

.sidebar-menu i {
    margin-right: 10px;
    width: 20px;
}

/* --- MAIN CONTENT --- */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* HEADER */
.top-header {
    background-color: var(--white);
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.header-title h1 {
    font-size: 20px;
    color: var(--text-dark);
}

.header-user {
    color: var(--text-muted);
    font-size: 14px;
}

.divider {
    margin: 0 10px;
}

/* CARDS & LAYOUT */
.content-wrapper {
    padding: 30px;
    display: grid;
    grid-template-columns: 1fr 2fr; /* Rasio panel kiri 1, kanan 2 */
    gap: 20px;
}

.card {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.card h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

/* PANEL KIRI: PENCARIAN & INFO */
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.search-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.btn-search {
    padding: 10px 15px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.student-info table {
    width: 100%;
    border-collapse: collapse;
}

.student-info td {
    padding: 10px 0;
    color: var(--text-dark);
}

.badge-active {
    background-color: var(--success);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

/* PANEL KANAN: FORM BULANAN */
.months-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.month-item {
    display: flex;
    align-items: center;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
}

.month-item.unpaid:hover {
    border-color: var(--primary-color);
    background-color: #f8f9fa;
}

.month-item input {
    margin-right: 15px;
    transform: scale(1.2);
}

.month-name {
    flex: 1;
    font-weight: 600;
}

.month-item.paid {
    background-color: #e8f5e9;
    border-color: #c8e6c9;
    color: var(--success);
    cursor: not-allowed;
}

.status {
    font-size: 12px;
    font-weight: bold;
}

.price {
    font-size: 12px;
    color: var(--text-muted);
}

/* PAYMENT SUMMARY */
.payment-summary {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
}

.total-box span {
    color: var(--text-muted);
    font-size: 14px;
}

.total-box h2 {
    color: var(--success);
    font-size: 28px;
    margin-top: 5px;
}

.action-buttons {
    display: flex;
    gap: 15px;
}

.payment-method {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.btn-submit {
    padding: 12px 25px;
    background-color: var(--success);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    font-weight: bold;
}

.btn-submit:hover {
    background-color: #219a52;
}

/* --- DASHBOARD SPECIFIC STYLES --- */
.dashboard-wrapper {
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* KOTAK RINGKASAN (CARDS) */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.summary-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    border-left: 5px solid transparent; /* Untuk aksen warna di kiri */
}

.border-left-success { border-left-color: var(--success); }
.border-left-primary { border-left-color: #3498db; }
.border-left-danger { border-left-color: #e74c3c; }

.text-success { color: var(--success); }
.text-primary { color: #3498db; }
.text-danger { color: #e74c3c; }

.summary-info .summary-title {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.summary-info .summary-value {
    font-size: 24px;
    color: var(--text-dark);
}

.summary-info small {
    color: var(--text-muted);
    font-size: 12px;
}

.summary-icon {
    opacity: 0.3;
}

/* TABEL TRANSAKSI */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.card-header h3 {
    border-bottom: none; /* Override bawaan card h3 sebelumnya */
    margin-bottom: 0;
    padding-bottom: 0;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th, .data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: #f8f9fa;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 14px;
}

.data-table td {
    font-size: 14px;
    color: var(--text-dark);
}

.data-table tbody tr:hover {
    background-color: #f8f9fa;
}

/* BADGES & BUTTONS */
.badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background-color: #d4edda;
    color: #155724;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
    border-radius: 4px;
    cursor: pointer;
    border: none;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-print {
    background-color: var(--success);
    color: white;
}

.btn-print:hover {
    background-color: #219a52;
}

/* --- MODUL TRANSAKSI COMPACT --- */

/* Mengecilkan Kotak Bulan */
.months-grid { 
    gap: 15px; 
    margin-bottom: 15px; 
}

.month-item { 
    padding: 8px 10px; 
    border-radius: 4px; 
}

.month-item input { 
    margin-right: 8px; 
    transform: scale(1); 
}

.month-name { 
    font-size: 15px; 
}

.status, .price { 
    font-size: 15px; 
}

/* Mengecilkan Area Tombol Bayar */
.payment-summary { 
    padding: 10px 15px; 
    margin-top: 10px; 
}

.btn-submit { 
    padding: 10px; 
    font-size: 14px; 
}

/* Wadah Scroll untuk Tabel Riwayat */
.table-scroll {
    max-height: 300px; /* Ini akan membatasi tinggi sekitar 3-4 baris saja */
    overflow-y: auto;  /* Ini yang memunculkan scroll otomatis jika data banyak */
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-top: 10px;
}

/* Membuat judul tabel tetap terlihat saat di-scroll */
.table-scroll th {
    position: sticky;
    top: 0;
    background-color: #f8f9fa;
    z-index: 1;
    padding: 8px;
    border-bottom: 2px solid #ddd;
}