/* ========================================
   LabInventory Pro - Ruangguru-Inspired Theme
   Clean, Modern, Vibrant Green
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors - Ruangguru Green */
    --primary: #00AA13;
    --primary-dark: #008C0F;
    --primary-light: #4CD964;
    --primary-bg: rgba(0, 170, 19, 0.1);

    /* Secondary Colors */
    --secondary: #0078D7;
    --secondary-dark: #005A9E;
    --secondary-light: #4DA3FF;

    /* Accent Colors */
    --accent-orange: #FF9500;
    --accent-purple: #9B59B6;
    --accent-pink: #E91E63;

    /* Background Colors */
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-gray: #F1F3F4;
    --bg-dark: #1A1A1A;

    /* Text Colors */
    --text-primary: #1A1A1A;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-white: #FFFFFF;

    /* Status Colors */
    --success: #00AA13;
    --warning: #FF9500;
    --danger: #DC3545;
    --info: #0078D7;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 4px 14px rgba(0, 170, 19, 0.3);

    /* Border */
    --border-color: #E5E7EB;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed: 72px;
    --header-height: 70px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ========================================
   Sidebar
   ======================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width var(--transition-normal);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
    width: 42px;
    height: 42px;
    background: var(--primary-bg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar-toggle {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-gray);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    margin-bottom: 4px;
    cursor: pointer;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
}

.nav-icon {
    font-size: 1.25rem;
    min-width: 24px;
    text-align: center;
}

.nav-text {
    font-size: 0.9rem;
    white-space: nowrap;
}

.sidebar.collapsed .nav-text,
.sidebar.collapsed .nav-arrow {
    display: none;
}

/* Nav Groups */
.nav-group {
    margin-bottom: 4px;
}

.nav-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    font-weight: 500;
}

.nav-group-header:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.nav-arrow {
    margin-left: auto;
    transition: transform var(--transition-fast);
}

.nav-group.open .nav-arrow {
    transform: rotate(180deg);
}

.nav-group-items {
    display: none;
    padding-left: 16px;
    margin-top: 4px;
}

.nav-group.open .nav-group-items {
    display: block;
}

.nav-group-items .nav-item {
    padding: 10px 16px;
    font-size: 0.85rem;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.user-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.sidebar.collapsed .user-details {
    display: none;
}

.logout-form {
    margin: 0;
}

.logout-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-gray);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.logout-btn:hover {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    flex: 1;
    background: var(--bg-light);
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed~.main-content {
    margin-left: var(--sidebar-collapsed);
}

/* Main Header */
.main-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 100;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.search-box {
    position: relative;
    width: 320px;
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 44px;
    background: var(--bg-gray);
    border: 1px solid transparent;
    border-radius: var(--border-radius-xl);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    background: var(--bg-white);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-btn {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition-fast);
    color: var(--text-secondary);
    text-decoration: none;
}

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

.notification-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    background: var(--danger);
    color: white;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
    min-width: 18px;
    text-align: center;
}

/* Content Area */
.content-area {
    padding: 24px;
    min-height: calc(100vh - var(--header-height));
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(0, 170, 19, 0.1);
    color: var(--success);
    border: 1px solid rgba(0, 170, 19, 0.2);
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.alert-warning {
    background: rgba(255, 149, 0, 0.1);
    color: var(--warning);
    border: 1px solid rgba(255, 149, 0, 0.2);
}

.alert-info {
    background: rgba(0, 120, 215, 0.1);
    color: var(--info);
    border: 1px solid rgba(0, 120, 215, 0.2);
}

.alert-icon {
    font-weight: 700;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.5;
    color: inherit;
}

.alert-close:hover {
    opacity: 1;
}

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    transition: var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.kpi-card::after {
    content: '';
    position: absolute;
    right: -20px;
    bottom: -20px;
    width: 100px;
    height: 100px;
    background: var(--primary-bg);
    border-radius: 50%;
    opacity: 0.5;
}

.kpi-card.primary::after {
    background: var(--primary-bg);
}

.kpi-card.secondary::after {
    background: rgba(0, 120, 215, 0.1);
}

.kpi-card.warning::after {
    background: rgba(255, 149, 0, 0.1);
}

.kpi-card.danger::after {
    background: rgba(220, 53, 69, 0.1);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-bg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.kpi-card.secondary .kpi-icon {
    background: rgba(0, 120, 215, 0.1);
}

.kpi-card.warning .kpi-icon {
    background: rgba(255, 149, 0, 0.1);
}

.kpi-card.danger .kpi-icon {
    background: rgba(220, 53, 69, 0.1);
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.kpi-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.kpi-trend {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.kpi-trend.up {
    background: rgba(0, 170, 19, 0.1);
    color: var(--success);
}

.kpi-trend.down {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

/* ========================================
   Data Tables
   ======================================== */
.data-table-container {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.data-table-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.data-table-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.data-table-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

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

.data-table th,
.data-table td {
    padding: 14px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-gray);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.data-table tr:hover {
    background: var(--bg-light);
}

.data-table td {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.table-pagination {
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.pagination-controls {
    display: flex;
    gap: 8px;
}

.pagination-btn {
    padding: 8px 14px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.85rem;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-label .required {
    color: var(--danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
    border-color: var(--danger);
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 6px;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 44px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-check-input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-primary);
}

.btn-secondary {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-icon {
    padding: 10px;
    min-width: 40px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========================================
   Badges
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--border-radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(0, 170, 19, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 149, 0, 0.1);
    color: var(--warning);
}

.badge-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.badge-info {
    background: rgba(0, 120, 215, 0.1);
    color: var(--info);
}

.badge-secondary {
    background: var(--bg-gray);
    color: var(--text-secondary);
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-white);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideIn 0.25s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-gray);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ========================================
   Charts
   ======================================== */
.chart-container {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.chart-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-wrapper {
    position: relative;
    height: 300px;
}

/* ========================================
   Grid Layouts
   ======================================== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

/* ========================================
   Empty States
   ======================================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.empty-state-description {
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* ========================================
   Auth Pages
   ======================================== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 20px;
}

.auth-card {
    background: var(--bg-white);
    border-radius: var(--border-radius-xl);
    padding: 48px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.auth-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.auth-form .form-group {
    margin-bottom: 20px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .search-box {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }

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

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .search-box {
        display: none;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

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

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

    .content-area {
        padding: 16px;
    }

    .auth-card {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .main-header {
        padding: 0 16px;
    }

    .page-title {
        font-size: 1.2rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--text-muted);
}

.text-success {
    color: var(--success);
}

.text-warning {
    color: var(--warning);
}

.text-danger {
    color: var(--danger);
}

.text-primary {
    color: var(--primary);
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mt-4 {
    margin-top: 2rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 2rem;
}

.hidden {
    display: none !important;
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gap-1 {
    gap: 0.5rem;
}

.gap-2 {
    gap: 1rem;
}

.gap-3 {
    gap: 1.5rem;
}