/* ==========================================================================
   1. Konfigurasi Variabel & Gaya Dasar (Root & Body)
   ========================================================================== */

:root {
    /* Palet Warna */
    --color-primary: #007bff;
    --color-primary-dark: #0056b3;
    --color-secondary: #6c757d;
    --color-success: #28a745;
    --color-error: #dc3545;
    --color-info: #17a2b8;
    --color-background-light: #f8f9fa;
    --color-background: #e9ecef;
    --color-text-primary: #212529;
    --color-text-secondary: #495057;
    --color-text-light: #ffffff;
    --color-border: #dee2e6;

    /* Tipografi */
    --font-primary: 'Nunito Sans', sans-serif;
    --font-secondary: 'Lato', sans-serif;

    /* Spasi & Ukuran */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Radius & Shadow */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    margin: 0;
    padding: var(--spacing-md);
    line-height: 1.6;
}

/* ==========================================================================
   2. Layout & Tipografi Utama
   ========================================================================== */

.container {
    max-width: 800px;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-lg);
    background-color: var(--color-text-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

h2 {
    font-family: var(--font-secondary);
    font-weight: 700;
    text-align: center;
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: var(--spacing-xl);
}

h3 {
    font-weight: 800;
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

h4 {
    font-weight: 700;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ==========================================================================
   3. Elemen Form Global
   ========================================================================== */

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9em;
}

input[type="tel"],
input[type="text"],
input[type="password"],
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1em;
    font-family: var(--font-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

button, .button-like {
    display: inline-block;
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1em;
    font-weight: 700;
    font-family: var(--font-primary);
    color: var(--color-text-light);
    background-color: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover, .button-like:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
}

button:active, .button-like:active {
    transform: translateY(1px);
}

button:disabled {
    background-color: var(--color-secondary);
    cursor: not-allowed;
}

.button-like.button-secondary {
    background-color: var(--color-background-light);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}
.button-like.button-secondary:hover {
    background-color: var(--color-border);
    color: var(--color-text-primary);
}

.form-note {
    font-size: 0.85em;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

.form-section > *:not(:last-child) {
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   4. Komponen Spesifik
   ========================================================================== */

/* --- Notifikasi & Pesan --- */
.api-message {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
}
.api-message.success { background-color: #d4edda; border-color: #c3e6cb; color: #155724; }
.api-message.error { background-color: #f8d7da; border-color: #f5c6cb; color: #721c24; }
.api-message.info { background-color: #d1ecf1; border-color: #bee5eb; color: #0c5460; }

.notification-content { display: flex; align-items: center; gap: var(--spacing-sm); }
.notification-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    padding: 0 var(--spacing-sm);
}
.notification-close-btn:hover { opacity: 1; }
.icon { width: 20px; height: 20px; vertical-align: middle; }

/* --- Dasbor Pengguna --- */
.user-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.info-item {
    background-color: var(--color-background-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.info-label { display: block; font-size: 0.8em; font-weight: 600; color: var(--color-text-secondary); margin-bottom: var(--spacing-xs); }
.info-value { font-size: 1.1em; font-weight: 700; word-break: break-all; }
.balance-value.error { color: var(--color-error); font-size: 0.9em; }

/* --- Dropdown Pencarian Paket --- */
.searchable-dropdown-container { position: relative; }
.clear-search-input-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-secondary);
    cursor: pointer;
}
.search-results-panel {
    display: none;
    position: absolute;
    background-color: white;
    width: 100%;
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 10;
    max-height: 250px;
    overflow-y: auto;
}
.search-results-panel ul { list-style: none; margin: 0; padding: 0; }
.search-results-panel li {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
}
.search-results-panel li:hover, .search-results-panel li.selected { background-color: var(--color-background-light); }

/* --- Detail Paket & Form Pembelian --- */
#package_details_display { margin-top: var(--spacing-xl); }
.package-details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}
.detail-item dt { font-weight: bold; color: var(--color-text-secondary); margin-bottom: var(--spacing-xs); }
.detail-item dd { margin-left: 0; }
.purchase-section { margin-top: var(--spacing-lg); padding-top: var(--spacing-lg); border-top: 1px dashed var(--color-border); }
.purchase-section > div { margin-bottom: var(--spacing-md); }

/* --- Blok Instruksi Pembayaran (Baru) --- */
.payment-instructions {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: #f7f9fc;
    text-align: center;
}
.payment-instructions h4 { margin-top: 0; margin-bottom: var(--spacing-sm); color: var(--color-text-primary); font-size: 1.1em; }
.payment-instructions .payment-message { margin-bottom: var(--spacing-md); font-size: 0.95em; color: var(--color-text-secondary); line-height: 1.5; }
.payment-instructions .trx-id { font-size: 0.85em; color: var(--color-text-secondary); margin-bottom: var(--spacing-md); word-break: break-all; background-color: #eef2f7; padding: 4px 8px; border-radius: var(--radius-sm); display: inline-block; }
.payment-instructions .payment-action-area { margin-top: var(--spacing-md); }
.payment-instructions .payment-action-area .button-like { width: 100%; max-width: 280px; padding: var(--spacing-sm) var(--spacing-md); font-size: 1.1em; font-weight: bold; }
.payment-instructions #qris_code_area { margin: 0 auto; background: white; padding: 1rem; border-radius: var(--radius-md); display: inline-block; box-shadow: var(--shadow-sm); }
#qris_code_area img { display: block; margin: 0 auto; }


/* --- Tabel Riwayat Transaksi --- */
.table-responsive-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9em; }
th, td { padding: var(--spacing-sm) var(--spacing-md); text-align: left; border-bottom: 1px solid var(--color-border); }
thead th { background-color: var(--color-background-light); font-weight: 700; }
tbody tr:hover { background-color: #f5f5f5; }
.status-text { padding: var(--spacing-xs) var(--spacing-sm); border-radius: var(--radius-sm); color: var(--color-text-light); font-weight: bold; font-size: 0.9em; }
.status-text.success { background-color: var(--color-success); }
.status-text.pending { background-color: var(--color-info); }
.status-text.failed { background-color: var(--color-error); }
.status-text.unknown { background-color: var(--color-secondary); }

/* --- Loader & Misc --- */
.loading-indicator { display: flex; align-items: center; justify-content: center; gap: var(--spacing-sm); }
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

.logout-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-sm);
    background-color: var(--color-background-light);
    color: var(--color-error);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: bold;
}
.logout-link:hover { background-color: var(--color-error); color: var(--color-text-light); text-decoration: none; }
.logout-link .icon { stroke: currentColor; }

/* ==========================================================================
   5. Tampilan Responsif (Mobile)
   ========================================================================== */

@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    .container {
        padding: var(--spacing-md);
    }
    h2 {
        font-size: 1.5rem;
    }
    .user-info-grid, .package-details-grid {
        grid-template-columns: 1fr;
    }
}