/* Tema Utama: Premium Flat Design - Clean & Corporate */
:root {
    --primary-blue: #0A2540; /* Dark Navy Corporate */
    --secondary-blue: #1A365D; 
    --accent-blue: #0072CE;
    --accent-orange: #F37021;
    --bg-main: #F4F7FE; /* Light airy grey */
    --sidebar-width: 260px;
    --topbar-height: 70px;
    --text-dark: #1E293B;
    --text-muted: #64748B;
}

body {
    background-color: var(--bg-main);
    min-height: 100vh;
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    font-weight: 400; /* Normal weight */
    overflow-x: hidden;
    margin: 0;
}

/* Premium Card Design (Replaces glass-panel) */
.card-premium {
    background: #FFFFFF;
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border-radius: 12px;
    padding: 1.5rem;
    transition: box-shadow 0.3s ease;
}

.card-premium:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

/* Admin Panel Layout */
#wrapper {
    display: flex;
    width: 100%;
    align-items: stretch;
}

/* Sidebar */
#sidebar {
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    background-color: var(--primary-blue);
    color: #F8FAFC;
    transition: all 0.3s;
    height: 100vh;
    box-shadow: 2px 0 8px rgba(0,0,0,0.05);
    z-index: 1000;
    position: sticky;
    top: 0;
}

#sidebar.active {
    margin-left: calc(-1 * var(--sidebar-width));
}

#sidebar .sidebar-header {
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.15);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

#sidebar ul.components {
    padding: 20px 0;
}

#sidebar ul li a {
    padding: 12px 20px;
    font-size: 1.05em;
    font-weight: 500;
    display: block;
    color: #CBD5E1;
    text-decoration: none;
    transition: 0.2s;
    border-left: 4px solid transparent;
}

#sidebar ul li a:hover, #sidebar ul li.active > a {
    color: #FFFFFF;
    background-color: rgba(255,255,255,0.08);
    border-left-color: var(--accent-orange);
}

#sidebar ul li a i {
    margin-right: 12px;
    width: 20px;
    text-align: center;
    opacity: 0.8;
}

#sidebar ul li.active > a i {
    opacity: 1;
    color: var(--accent-orange);
}

/* Main Content area */
#content {
    width: 100%;
    min-height: 100vh;
    transition: all 0.3s;
}

#sidebar.active ~ #content {
    width: 100%;
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background-color: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    padding: 0 24px;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 999;
}

/* Buttons */
.btn-primary {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    border-radius: 6px;
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: #005FA3;
    border-color: #005FA3;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 114, 206, 0.2);
}

.btn-light {
    background-color: #F8FAFC;
    border-color: #E2E8F0;
    color: var(--text-dark);
}

.btn-light:hover {
    background-color: #F1F5F9;
    border-color: #CBD5E1;
}

/* Table adjustments */
.table {
    color: var(--text-dark);
}

.table th {
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 2px solid #E2E8F0;
    background-color: #F8FAFC;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    padding: 12px;
}

.table td {
    vertical-align: middle;
    padding: 12px;
    border-bottom: 1px solid #F1F5F9;
}

/* Login Page specific */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: var(--bg-main);
}

.login-card {
    width: 100%;
    max-width: 420px;
}

/* Form Controls */
.form-control, .form-select {
    border: 1px solid #CBD5E1;
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-weight: 400;
}

.form-control:focus, .form-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 114, 206, 0.15);
}

.input-group-text {
    background-color: #F8FAFC;
    border-color: #CBD5E1;
    color: var(--text-muted);
}

/* Page Titles */
.page-title {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 0;
    font-size: 1.5rem;
}

/* Datatables Mobile Layout adjustments */
@media screen and (max-width: 767px) {
    #sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }
    #sidebar.active {
        margin-left: 0;
    }
}