:root {
    --primary: #4FC3F7;
    --primary-dark: #0288D1;
    --primary-light: #B3E5FC;
    --secondary: #0277BD;
    --success: #2a9d8f;
    --warning: #f4a261;
    --danger: #e63946;
    --info: #81D4FA;
    --dark: #333333;
    --gray: #666666;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border: #cccccc;
}

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

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
    color: var(--dark);
    background-color: var(--light-gray);
}

/* Navbar Top */
.navbar-top {
    position: fixed;
    top: 0;
    left: 250px;
    right: 0;
    height: 56px;
    background: var(--white);
    border-bottom: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 999;
}

.navbar-brand {
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-dark);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 13px;
}

.badge-level {
    background: var(--primary);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
}

.btn-logout {
    color: var(--danger);
    text-decoration: none;
    font-size: 13px;
}
.btn-logout:hover { text-decoration: underline; }

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--secondary) 100%);
    color: white;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-header {
    padding: 16px 20px;
    font-size: 22px;
    font-weight: bold;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-nav { padding: 10px 0; }

.sidebar .nav-link {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    display: flex;
    align-items: center;
    padding: 11px 20px;
    font-size: 13px;
    gap: 10px;
    transition: background 0.2s;
    cursor: pointer;
}

.sidebar .nav-link:hover { background: rgba(255,255,255,0.1); color: #fff; }
.sidebar .nav-link.active { background: rgba(255,255,255,0.2); color: #fff; font-weight: bold; }

.sidebar .sub-link { padding-left: 48px; font-size: 12.5px; }

.sidebar .nav-submenu { display: none; }
.sidebar .nav-group.open .nav-submenu { display: block; }

.toggle-icon {
    margin-left: auto;
    font-size: 11px;
    transition: transform 0.2s;
}
.nav-group.open .toggle-icon { transform: rotate(180deg); }

/* Main Content */
.main-container {
    margin-left: 250px;
    margin-top: 56px;
    padding: 24px;
    min-height: calc(100vh - 56px);
}

/* Card */
.card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    margin-bottom: 20px;
    border: none;
}

.card-header-custom {
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-dark);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-light);
}

/* Dashboard Cards */
.dash-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-left: 4px solid var(--primary);
    cursor: pointer;
    transition: transform 0.15s;
}
.dash-card:hover { transform: translateY(-2px); }
.dash-card .dash-number { font-size: 32px; font-weight: bold; color: var(--primary-dark); }
.dash-card .dash-label { font-size: 13px; color: var(--gray); margin-top: 4px; }
.dash-card.warning { border-left-color: var(--warning); }
.dash-card.warning .dash-number { color: var(--warning); }
.dash-card.danger { border-left-color: var(--danger); }
.dash-card.danger .dash-number { color: var(--danger); }

/* Table */
.card { overflow-x: auto; }
table.dataTable { border-collapse: collapse !important; min-width: 600px; }
table.dataTable thead th {
    background-color: var(--primary);
    color: white;
    font-weight: bold;
    font-size: 13px;
    padding: 10px 12px;
}
table.dataTable tbody td {
    padding: 9px 12px;
    font-size: 13px;
    border-bottom: 1px solid #f0f0f0;
}
table.dataTable tbody tr:hover { background-color: #E1F5FE !important; }

/* Form */
label { display: block; margin-bottom: 4px; font-weight: bold; color: var(--dark); font-size: 13px; }
.form-control, .form-select { font-size: 13px; }
.form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 0.2rem rgba(79,195,247,0.25); }
input[readonly] { background-color: #f5f5f5; cursor: not-allowed; }

/* Buttons */
.btn { font-size: 13px; }
.btn-primary { background-color: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background-color: var(--primary-dark); border-color: var(--primary-dark); }
.btn-success { background-color: var(--success); border-color: var(--success); }
.btn-danger { background-color: var(--danger); border-color: var(--danger); }
.btn-warning { background-color: var(--warning); border-color: var(--warning); color: #fff; }

/* Badge */
.badge-status { padding: 4px 10px; border-radius: 4px; font-size: 12px; font-weight: bold; }
.badge-lunas { background-color: var(--success); color: white; }
.badge-cicil { background-color: var(--warning); color: white; }
.badge-belum { background-color: var(--danger); color: white; }
.badge-lengkap { background-color: var(--success); color: white; }
.badge-proses { background-color: var(--info); color: var(--dark); }

/* Dynamic Rows */
.dynamic-row { background: #FAFAFA; border: 1px solid #eee; border-radius: 6px; padding: 15px; margin-bottom: 10px; }
.dynamic-row:hover { background: #F0F9FF; }
.btn-remove-row { color: var(--danger); cursor: pointer; font-size: 18px; }
.btn-remove-row:hover { color: #c0392b; }

/* Cost Component */
.cost-row { display: flex; gap: 10px; align-items: center; margin-bottom: 5px; }
.cost-row input { flex: 1; }

/* Preview Modal */
.preview-table td { padding: 6px 10px; font-size: 13px; }
.preview-table th { padding: 6px 10px; font-size: 13px; background: var(--light-gray); }

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.page-title { font-size: 20px; font-weight: bold; color: var(--primary-dark); }

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
}
.login-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    width: 400px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.login-card h2 { color: var(--primary-dark); margin-bottom: 8px; }
.login-card p { color: var(--gray); margin-bottom: 24px; font-size: 13px; }

/* Alert Stok */
.stok-alert { background: #FFF3E0; border-left: 4px solid var(--warning); padding: 10px 15px; border-radius: 4px; margin-bottom: 8px; font-size: 13px; }

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}
.sidebar-overlay.active { display: block; }

/* Hamburger toggle */
.btn-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--primary-dark);
    cursor: pointer;
    padding: 0 10px;
}

/* Responsive */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .sidebar.open { transform: translateX(0); }
    .navbar-top { left: 0; }
    .main-container { margin-left: 0; }
    .btn-sidebar-toggle { display: inline-block; }
}

@media (max-width: 768px) {
    .main-container { padding: 15px; }
    .page-header { flex-direction: column; gap: 10px; align-items: flex-start; }
    .dash-card .dash-number { font-size: 24px; }
    .row .col-md-3, .row .col-md-4, .row .col-md-6 { margin-bottom: 8px; }
    .dynamic-row { padding: 10px; }
    table.dataTable thead th, table.dataTable tbody td { padding: 6px 8px; font-size: 12px; }
    .navbar-user span { display: none; }
}

@media (max-width: 576px) {
    .main-container { padding: 10px; }
    .card { padding: 12px; }
    .login-card { width: 95%; padding: 24px; }
}