/**
 * PolyglotCRM - Modern Tech CRM Stylesheet
 * Design: Glassmorphism + Gradient + Micro-animations
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #8B5CF6;
    --accent: #06B6D4;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
    
    /* Background */
    --bg-dark: #0F172A;
    --bg-card: rgba(255, 255, 255, 0.97);
    --bg-glass: rgba(255, 255, 255, 0.1);
    --bg-hover: rgba(255, 255, 255, 0.08);
    
    /* Text */
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #F8FAFC;
    --text-muted: #94A3B8;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(0, 0, 0, 0.05);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
}

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

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

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Auth Pages (Login/Register) ===== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-dark);
    padding: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

.auth-page::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    animation: pulse 20s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* ===== Auth Container ===== */
.auth-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Auth Card ===== */
.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
}

/* ===== Auth Logo ===== */
.auth-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-logo-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.4);
}

.auth-logo-icon i {
    font-size: 2rem;
    color: white;
}

.auth-logo h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.auth-logo p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* ===== Language Switcher ===== */
.lang-switcher {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    gap: var(--space-xs);
    z-index: 100;
}

.lang-btn {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-light);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lang-btn:hover, .lang-btn.active {
    background: var(--primary);
    border-color: var(--primary);
}

/* ===== Form Styles ===== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--text-base);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

.form-input.error {
    border-color: var(--danger);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--danger);
    margin-top: var(--space-xs);
}

/* ===== Input Group ===== */
.input-group {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-group .form-input {
    padding-left: 2.75rem;
}

.input-group .toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
}

/* ===== Checkbox ===== */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.checkbox-input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.checkbox-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

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

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

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

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

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}

/* ===== Auth Links ===== */
.auth-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-light);
}

.auth-link {
    font-size: var(--text-sm);
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.auth-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===== Alert Messages ===== */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: var(--text-sm);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

/* ===== Dashboard Layout ===== */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-light);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: var(--transition-normal);
    backdrop-filter: blur(20px);
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.sidebar-logo h2 {
    font-size: var(--text-lg);
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navigation ===== */
.nav-menu {
    list-style: none;
    padding: var(--space-md);
}

.nav-item {
    margin-bottom: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-weight: 500;
}

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

.nav-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary);
}

.nav-link i {
    width: 20px;
    font-size: 1.1rem;
}

.nav-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-md) 0;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    margin-left: 260px;
    background: #F1F5F9;
    min-height: 100vh;
}

/* ===== Top Bar ===== */
.topbar {
    background: var(--bg-card);
    padding: var(--space-md) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

.breadcrumb {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.breadcrumb-separator {
    margin: 0 var(--space-sm);
    color: var(--text-muted);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.user-menu:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--text-sm);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

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

/* ===== Page Content ===== */
.page-content {
    padding: var(--space-xl);
}

.page-header {
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

/* ===== Stats Cards ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--primary);
}

.stat-icon.success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0.1) 100%);
    color: var(--success);
}

.stat-icon.warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0.1) 100%);
    color: var(--warning);
}

.stat-icon.accent {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
    color: var(--accent);
}

.stat-content h3 {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-xs);
}

.stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.stat-change {
    font-size: var(--text-xs);
    margin-top: var(--space-xs);
}

.stat-change.up {
    color: var(--success);
}

.stat-change.down {
    color: var(--danger);
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

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

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

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-light);
    background: #F8FAFC;
}

/* ===== Tables ===== */
.table-container {
    overflow-x: auto;
}

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

.table th {
    text-align: left;
    padding: var(--space-md);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: #F8FAFC;
    border-bottom: 2px solid var(--border-light);
}

.table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-light);
    font-size: var(--text-sm);
}

.table tr:hover td {
    background: #F8FAFC;
}

.table tr:last-child td {
    border-bottom: none;
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.badge-active, .badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-disabled, .badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary);
}

/* ===== Quick Actions ===== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.quick-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.quick-action:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.quick-action-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.quick-action span {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

/* ===== Activity List ===== */
.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-text {
    font-size: var(--text-sm);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.activity-time {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    background: #F8FAFC;
}

.pagination-info {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.pagination-buttons {
    display: flex;
    gap: var(--space-sm);
}

.pagination-btn {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.pagination-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

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

/* ===== Search & Filter ===== */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box .form-input {
    padding-left: 2.75rem;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.filter-group {
    display: flex;
    gap: var(--space-md);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    backdrop-filter: blur(4px);
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: var(--text-lg);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

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

.modal-body {
    padding: var(--space-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

/* ===== Form Grid ===== */
.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

/* ===== Dropdown ===== */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-sm);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
    min-width: 180px;
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-fast);
    z-index: 100;
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
}

.dropdown-item.danger {
    color: var(--danger);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-sm) 0;
}

/* ===== Tabs ===== */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--space-lg);
}

.tab-btn {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: var(--transition-fast);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition-fast);
}

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

.tab-btn.active {
    color: var(--primary);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ===== Charts ===== */
.chart-container {
    position: relative;
    height: 300px;
}

/* ===== Avatar ===== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: var(--text-sm);
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--text-xs);
}

.avatar-lg {
    width: 64px;
    height: 64px;
    font-size: var(--text-xl);
}

/* ===== Status Indicators ===== */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    display: inline-block;
}

.status-dot.online {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status-dot.offline {
    background: var(--text-muted);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--space-3xl);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--text-muted);
    font-size: 2rem;
}

.empty-state h3 {
    font-size: var(--text-lg);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* ===== Loading ===== */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .auth-card {
        padding: var(--space-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .pagination {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .user-info {
        display: none;
    }
    
    .page-content {
        padding: var(--space-md);
    }
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.hidden { display: none; }