:root {
    --primary: #0f172a;        
    --primary-light: #1e293b;  
    --accent: #2563eb;         
    --accent-hover: #1d4ed8;   
    --bg-main: #f8fafc;        
    --bg-surface: #ffffff;     
    --text-main: #0f172a;      
    --text-muted: #64748b;     
    --text-light: #94a3b8;     
    --border-color: #e2e8f0;   
    --success: #16a34a;        
    --success-bg: #dcfce7;
    --warning: #f59e0b;        
    --warning-bg: #fef3c7;
    --danger: #dc2626;         
    --danger-bg: #fee2e2;
    --info: #0284c7;           
    --info-bg: #e0f2fe;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
}

body.nav-open {
    overflow: hidden;
}

.demo-tour-overlay {
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 4000;
}

.demo-tour-highlight {
    position: absolute;
    border: 3px solid #60a5fa;
    border-radius: 16px;
    background: transparent;
    box-shadow: 0 0 0 9999px rgba(15, 23, 42, 0.62), 0 16px 36px rgba(15, 23, 42, 0.18);
    pointer-events: none;
    z-index: 4001;
    transition: all 0.25s ease;
}

.demo-tour-popover {
    position: absolute;
    width: min(360px, calc(100vw - 32px));
    background: #ffffff;
    color: var(--text-main);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.24);
    z-index: 4002;
}

.demo-tour-progress {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
}

.demo-tour-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.demo-tour-description {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.demo-tour-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.demo-tour-btn {
    border: none;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, background-color 0.15s ease, opacity 0.15s ease;
}

.demo-tour-btn:hover:not(:disabled) {
    transform: translateY(-1px);
}

.demo-tour-btn:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.demo-tour-btn-primary {
    background: var(--accent);
    color: #ffffff;
}

.demo-tour-btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.demo-tour-btn-secondary {
    background: #e2e8f0;
    color: var(--primary);
}

.text-red { color: var(--danger); font-size: 3rem; margin-bottom: 12px; display: inline-block; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); font-size: 0.875rem;}
.mt-lg { margin-top: 24px; }

.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.56);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 80;
}

.sidebar-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.sidebar {
    width: 260px;
    background-color: var(--primary);
    color: var(--bg-surface);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    min-height: 100vh;
}

.sidebar-header {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--primary-light);
    gap: 12px;
}

.sidebar-brand {
    display: flex;
    align-items: center;
}

.sidebar-header i {
    font-size: 28px;
    color: var(--accent);
    margin-right: 12px;
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-close-btn,
.mobile-menu-btn {
    width: 42px;
    height: 42px;
    border: 1px solid transparent;
    border-radius: 12px;
    background: transparent;
    color: inherit;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.sidebar-close-btn i,
.mobile-menu-btn i {
    font-size: 22px;
    margin: 0;
    color: currentColor;
}

.sidebar-nav {
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-light);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item i {
    font-size: 20px;
    margin-right: 12px;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--primary-light);
    color: var(--bg-surface);
}

.nav-item.active i {
    color: var(--accent);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.header {
    min-height: 80px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px 32px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-left h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.header-left p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--primary-light);
    color: var(--bg-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 32px;
}

.stat-card {
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.stat-icon.blue { background-color: var(--info-bg); color: var(--info); }
.stat-icon.green { background-color: var(--success-bg); color: var(--success); }
.stat-icon.orange { background-color: var(--warning-bg); color: var(--warning); }
.stat-icon.red { background-color: var(--danger-bg); color: var(--danger); }

.stat-info h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-info .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.table-section {
    background-color: var(--bg-surface);
    margin: 0 32px 32px 32px;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.table-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
}

.table-actions {
    display: flex;
    gap: 16px;
}

.search-box {
    position: relative;
    width: 300px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 10px 16px 10px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    font-size: 0.875rem;
    color: var(--text-main);
    background-color: var(--bg-main);
}

.search-box input:focus {
    border-color: var(--accent);
}

.btn {
    padding: 10px 16px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s ease;
}

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

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

.btn-secondary {
    background-color: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f1f5f9;
}

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

.btn-danger:hover {
    background-color: #b91c1c;
}

.icon-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    font-size: 16px;
    background-color: transparent;
    transition: all 0.2s;
}

.icon-btn.edit {
    color: var(--accent);
    background-color: var(--info-bg);
}

.icon-btn.edit:hover {
    background-color: #bae6fd;
}

.icon-btn.delete {
    color: var(--danger);
    background-color: var(--danger-bg);
}

.icon-btn.delete:hover {
    background-color: #fca5a5;
}

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

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

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-muted);
    background-color: #f8fafc;
}

td {
    font-size: 0.875rem;
}

td .action-cell {
    display: flex;
    gap: 8px;
}

.badge {
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.aman {
    background-color: var(--success-bg);
    color: var(--success);
}

.badge.menipis {
    background-color: var(--warning-bg);
    color: var(--warning);
}

.badge.kedaluwarsa {
    background-color: var(--danger-bg);
    color: var(--danger);
}

.empty-state {
    text-align: center;
    padding: 64px 0;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--border-color);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--bg-surface);
    width: 600px;
    max-width: 90%;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    transform: translateY(20px);
    transition: transform 0.2s ease;
}

.modal.small {
    width: 400px;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
    color: var(--primary);
}

.close-modal, .close-delete {
    background: transparent;
    color: var(--text-muted);
    font-size: 20px;
}

.close-modal:hover, .close-delete:hover {
    color: var(--primary);
    background-color: var(--bg-main);
    border-radius: var(--radius-sm);
}

.modal-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-group.half {
    flex: 1;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    font-size: 0.875rem;
    background-color: var(--bg-surface);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.center-actions {
    justify-content: center;
}

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 960px) {
    .mobile-menu-btn,
    .sidebar-close-btn {
        display: inline-flex;
    }

    .app-container {
        display: block;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(82vw, 320px);
        transform: translateX(-100%);
        transition: transform 0.24s ease;
        z-index: 90;
        box-shadow: 0 24px 48px rgba(15, 23, 42, 0.24);
    }

    .sidebar.is-open {
        transform: translateX(0);
    }

    .main-content {
        min-width: 0;
    }

    .header {
        padding: 16px 20px;
    }

    .header-left h1 {
        font-size: 1.125rem;
    }

    .header-left p {
        font-size: 0.82rem;
    }

    .stats-grid,
    .table-section {
        padding-left: 20px;
        padding-right: 20px;
    }

    .stats-grid {
        gap: 16px;
        padding-top: 24px;
        padding-bottom: 24px;
    }

    .table-section {
        margin: 0 20px 20px;
        padding: 20px;
    }

    .table-header,
    .table-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        width: 100%;
    }

    .btn,
    .btn-export,
    .clear-filter-btn {
        justify-content: center;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 720px) {
    .header {
        align-items: flex-start;
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

    .user-name {
        display: none;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 18px;
    }

    .table-section {
        margin: 0 16px 16px;
        padding: 16px;
    }

    .table-container {
        overflow: visible;
    }

    table,
    thead,
    tbody,
    th,
    td,
    tr {
        display: block;
    }

    thead {
        display: none;
    }

    tbody {
        display: grid;
        gap: 12px;
    }

    tr {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        background: var(--bg-surface);
        padding: 14px;
        box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
    }

    td {
        border-bottom: 1px solid var(--border-color);
        padding: 10px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        font-size: 0.86rem;
    }

    td:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    td::before {
        content: attr(data-label);
        color: var(--text-muted);
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.02em;
        flex: 0 0 42%;
    }

    td strong {
        font-size: 0.95rem;
    }

    td .action-cell {
        width: 100%;
        justify-content: flex-end;
    }

    .modal {
        width: calc(100vw - 24px);
        max-width: calc(100vw - 24px);
        max-height: calc(100vh - 24px);
        overflow-y: auto;
    }

    .modal-header,
    .modal-body {
        padding: 18px;
    }

    .form-actions {
        flex-direction: column-reverse;
    }
}