/* ============================================================================
   LeadCull Design System - Premium UI Theme
   ============================================================================ */

/* Google Font Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ============================================================================
   CSS Variables - Design Tokens
   ============================================================================ */
:root {
    /* Primary Colors */
    --lc-primary: #3b82f6;
    --lc-primary-hover: #2563eb;
    --lc-primary-light: rgba(59, 130, 246, 0.1);
    --lc-secondary: #14b8a6;
    --lc-secondary-hover: #0d9488;
    --lc-secondary-light: rgba(20, 184, 166, 0.1);
    
    /* Backgrounds */
    --lc-bg: #f8fafc;
    --lc-bg-alt: #f1f5f9;
    --lc-surface: #ffffff;
    --lc-surface-elevated: #ffffff;
    
    /* Text Colors */
    --lc-text: #0f172a;
    --lc-text-secondary: #475569;
    --lc-muted: #64748b;
    --lc-placeholder: #94a3b8;
    
    /* Borders */
    --lc-border: #e2e8f0;
    --lc-border-light: #f1f5f9;
    --lc-border-dark: #cbd5e1;
    
    /* Status Colors */
    --lc-success: #22c55e;
    --lc-success-light: rgba(34, 197, 94, 0.1);
    --lc-warning: #f59e0b;
    --lc-warning-light: rgba(245, 158, 11, 0.1);
    --lc-danger: #ef4444;
    --lc-danger-light: rgba(239, 68, 68, 0.1);
    --lc-info: #3b82f6;
    --lc-info-light: rgba(59, 130, 246, 0.1);
    
    /* Gradients */
    --lc-gradient-primary: linear-gradient(135deg, var(--lc-primary) 0%, var(--lc-secondary) 100%);
    --lc-gradient-soft: radial-gradient(ellipse at top, rgba(59,130,246,0.15) 0%, rgba(20,184,166,0.08) 50%, transparent 70%);
    --lc-gradient-card: linear-gradient(180deg, rgba(59,130,246,0.04) 0%, rgba(20,184,166,0.02) 100%);
    --lc-gradient-sidebar: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    
    /* Shadows */
    --lc-shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --lc-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --lc-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
    --lc-shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
    --lc-shadow-xl: 0 20px 40px -5px rgba(15, 23, 42, 0.12);
    --lc-shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.25);
    --lc-shadow-card-hover: 0 8px 25px -5px rgba(15, 23, 42, 0.1), 0 4px 10px -3px rgba(15, 23, 42, 0.05);
    
    /* Border Radius */
    --lc-radius-xs: 4px;
    --lc-radius-sm: 6px;
    --lc-radius: 8px;
    --lc-radius-md: 10px;
    --lc-radius-lg: 12px;
    --lc-radius-xl: 16px;
    --lc-radius-2xl: 20px;
    --lc-radius-pill: 9999px;
    
    /* Spacing */
    --lc-space-1: 0.25rem;
    --lc-space-2: 0.5rem;
    --lc-space-3: 0.75rem;
    --lc-space-4: 1rem;
    --lc-space-5: 1.25rem;
    --lc-space-6: 1.5rem;
    --lc-space-8: 2rem;
    --lc-space-10: 2.5rem;
    --lc-space-12: 3rem;
    
    /* Typography */
    --lc-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --lc-font-size-xs: 0.75rem;
    --lc-font-size-sm: 0.8125rem;
    --lc-font-size-base: 0.875rem;
    --lc-font-size-md: 0.9375rem;
    --lc-font-size-lg: 1rem;
    --lc-font-size-xl: 1.125rem;
    --lc-font-size-2xl: 1.25rem;
    --lc-font-size-3xl: 1.5rem;
    --lc-font-size-4xl: 1.875rem;
    --lc-font-size-5xl: 2.25rem;
    
    /* Line Heights */
    --lc-leading-tight: 1.25;
    --lc-leading-snug: 1.375;
    --lc-leading-normal: 1.5;
    --lc-leading-relaxed: 1.625;
    
    /* Font Weights */
    --lc-font-normal: 400;
    --lc-font-medium: 500;
    --lc-font-semibold: 600;
    --lc-font-bold: 700;
    
    /* Layout */
    --lc-sidebar-width: 260px;
    --lc-sidebar-collapsed: 72px;
    --lc-topbar-height: 64px;
    --lc-container-max: 1200px;
    
    /* Transitions */
    --lc-transition-fast: 120ms ease-out;
    --lc-transition: 180ms ease-out;
    --lc-transition-slow: 280ms ease-out;
    
    /* Z-Index Scale */
    --lc-z-dropdown: 100;
    --lc-z-sticky: 200;
    --lc-z-overlay: 300;
    --lc-z-modal: 400;
    --lc-z-toast: 500;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================================
   Base Styles
   ============================================================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--lc-font-sans);
    font-size: var(--lc-font-size-base);
    line-height: var(--lc-leading-normal);
    color: var(--lc-text);
    background: var(--lc-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================================
   App Shell Layout
   ============================================================================ */
.lc-app {
    display: flex;
    min-height: 100vh;
}

.lc-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--lc-sidebar-width);
    background: var(--lc-gradient-sidebar);
    border-right: 1px solid var(--lc-border);
    display: flex;
    flex-direction: column;
    z-index: var(--lc-z-sticky);
    transition: transform var(--lc-transition-slow), width var(--lc-transition-slow);
}

.lc-sidebar-header {
    padding: var(--lc-space-5) var(--lc-space-5);
    border-bottom: 1px solid var(--lc-border-light);
}

.lc-sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
    text-decoration: none;
}

.lc-sidebar-logo {
    font-size: var(--lc-font-size-2xl);
    font-weight: var(--lc-font-bold);
    background: var(--lc-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lc-sidebar-logo-img {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.lc-sidebar-nav {
    flex: 1;
    padding: var(--lc-space-4) var(--lc-space-3);
    overflow-y: auto;
}

.lc-sidebar-section {
    margin-bottom: var(--lc-space-6);
}

.lc-sidebar-label {
    font-size: var(--lc-font-size-xs);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 var(--lc-space-3);
    margin-bottom: var(--lc-space-2);
}

.lc-nav-item {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
    padding: var(--lc-space-3) var(--lc-space-3);
    border-radius: var(--lc-radius-lg);
    color: var(--lc-text-secondary);
    text-decoration: none;
    font-size: var(--lc-font-size-base);
    font-weight: var(--lc-font-medium);
    transition: all var(--lc-transition);
    position: relative;
}

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

.lc-nav-item.active {
    background: var(--lc-primary-light);
    color: var(--lc-primary);
}

.lc-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--lc-gradient-primary);
    border-radius: 0 var(--lc-radius-xs) var(--lc-radius-xs) 0;
}

.lc-nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.lc-nav-badge {
    margin-left: auto;
    background: var(--lc-danger);
    color: white;
    font-size: var(--lc-font-size-xs);
    font-weight: var(--lc-font-semibold);
    padding: 2px 6px;
    border-radius: var(--lc-radius-pill);
    min-width: 20px;
    text-align: center;
}

.lc-sidebar-footer {
    padding: var(--lc-space-4);
    border-top: 1px solid var(--lc-border-light);
}

.lc-upgrade-card {
    background: var(--lc-gradient-card);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    padding: var(--lc-space-4);
    text-align: center;
}

.lc-upgrade-card-title {
    font-size: var(--lc-font-size-sm);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
    margin-bottom: var(--lc-space-1);
}

.lc-upgrade-card-text {
    font-size: var(--lc-font-size-xs);
    color: var(--lc-muted);
    margin-bottom: var(--lc-space-3);
}

/* Main Content Area */
.lc-main {
    flex: 1;
    margin-left: var(--lc-sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.lc-topbar {
    position: sticky;
    top: 0;
    height: var(--lc-topbar-height);
    background: var(--lc-surface);
    border-bottom: 1px solid var(--lc-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--lc-space-6);
    z-index: var(--lc-z-sticky);
}

.lc-topbar-left {
    display: flex;
    align-items: center;
    gap: var(--lc-space-4);
}

.lc-topbar-title {
    font-size: var(--lc-font-size-lg);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
}

.lc-topbar-right {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
}

.lc-mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    color: var(--lc-text);
    cursor: pointer;
    border-radius: var(--lc-radius);
}

.lc-mobile-menu-btn:hover {
    background: var(--lc-bg-alt);
}

.lc-content {
    flex: 1;
    padding: var(--lc-space-6);
}

.lc-container {
    max-width: var(--lc-container-max);
    margin: 0 auto;
    width: 100%;
}

/* Page Header */
.lc-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--lc-space-6);
    gap: var(--lc-space-4);
}

.lc-page-header-content {
    flex: 1;
}

.lc-page-title {
    font-size: var(--lc-font-size-4xl);
    font-weight: var(--lc-font-bold);
    color: var(--lc-text);
    line-height: var(--lc-leading-tight);
    margin: 0 0 var(--lc-space-1) 0;
}

.lc-page-subtitle {
    font-size: var(--lc-font-size-base);
    color: var(--lc-muted);
    margin: 0;
}

.lc-page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
    flex-shrink: 0;
}

/* ============================================================================
   Card Component
   ============================================================================ */
.lc-card {
    background: var(--lc-surface);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    overflow: hidden;
    transition: all var(--lc-transition);
}

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

.lc-card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--lc-shadow-card-hover);
    border-color: var(--lc-border-dark);
}

.lc-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--lc-space-4) var(--lc-space-5);
    border-bottom: 1px solid var(--lc-border-light);
}

.lc-card-title {
    font-size: var(--lc-font-size-lg);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
    margin: 0;
}

.lc-card-body {
    padding: var(--lc-space-5);
}

.lc-card-footer {
    padding: var(--lc-space-4) var(--lc-space-5);
    border-top: 1px solid var(--lc-border-light);
    background: var(--lc-bg);
}

/* ============================================================================
   Button Component
   ============================================================================ */
.lc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--lc-space-2);
    padding: var(--lc-space-2) var(--lc-space-4);
    font-family: var(--lc-font-sans);
    font-size: var(--lc-font-size-base);
    font-weight: var(--lc-font-medium);
    line-height: 1.5;
    border-radius: var(--lc-radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--lc-transition);
    white-space: nowrap;
}

.lc-btn:focus-visible {
    outline: none;
    box-shadow: var(--lc-shadow-focus);
}

.lc-btn:active {
    transform: translateY(1px);
}

.lc-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Button Sizes */
.lc-btn-sm {
    padding: var(--lc-space-1) var(--lc-space-3);
    font-size: var(--lc-font-size-sm);
    border-radius: var(--lc-radius);
}

.lc-btn-lg {
    padding: var(--lc-space-3) var(--lc-space-6);
    font-size: var(--lc-font-size-lg);
    border-radius: var(--lc-radius-xl);
}

/* Button Variants */
.lc-btn-primary {
    background: var(--lc-gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--lc-shadow-sm);
}

.lc-btn-primary:hover {
    filter: brightness(1.05);
    box-shadow: var(--lc-shadow-md);
    transform: translateY(-1px);
}

.lc-btn-secondary {
    background: var(--lc-surface);
    color: var(--lc-text);
    border-color: var(--lc-border);
}

.lc-btn-secondary:hover {
    background: var(--lc-bg-alt);
    border-color: var(--lc-border-dark);
}

.lc-btn-ghost {
    background: transparent;
    color: var(--lc-text-secondary);
    border-color: transparent;
}

.lc-btn-ghost:hover {
    background: var(--lc-bg-alt);
    color: var(--lc-text);
}

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

.lc-btn-danger:hover {
    background: #dc2626;
    box-shadow: var(--lc-shadow-md);
}

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

.lc-btn-success:hover {
    background: #16a34a;
}

/* Icon Button */
.lc-btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--lc-radius-lg);
}

.lc-btn-icon.lc-btn-sm {
    width: 32px;
    height: 32px;
}

/* Loading Button State */
.lc-btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.lc-btn-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 50%;
    border-right-color: transparent;
    animation: lc-spin 0.6s linear infinite;
    margin-left: var(--lc-space-2);
    vertical-align: middle;
    flex-shrink: 0;
}

.lc-btn-lg .lc-btn-spinner {
    width: 20px;
    height: 20px;
}

.lc-btn-sm .lc-btn-spinner {
    width: 14px;
    height: 14px;
}

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

/* ============================================================================
   Form Components
   ============================================================================ */
.lc-form-group {
    margin-bottom: var(--lc-space-4);
}

.lc-label {
    display: block;
    font-size: var(--lc-font-size-sm);
    font-weight: var(--lc-font-medium);
    color: var(--lc-text);
    margin-bottom: var(--lc-space-2);
}

.lc-label-required::after {
    content: ' *';
    color: var(--lc-danger);
}

.lc-input,
.lc-select,
.lc-textarea {
    width: 100%;
    padding: var(--lc-space-3) var(--lc-space-4);
    font-family: var(--lc-font-sans);
    font-size: var(--lc-font-size-base);
    color: var(--lc-text);
    background: var(--lc-surface);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-lg);
    transition: all var(--lc-transition);
}

.lc-input:hover,
.lc-select:hover,
.lc-textarea:hover {
    border-color: var(--lc-border-dark);
}

.lc-input:focus,
.lc-select:focus,
.lc-textarea:focus {
    outline: none;
    border-color: var(--lc-primary);
    box-shadow: var(--lc-shadow-focus);
}

.lc-input::placeholder,
.lc-textarea::placeholder {
    color: var(--lc-placeholder);
}

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

.lc-input.is-error:focus,
.lc-select.is-error:focus,
.lc-textarea.is-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}

.lc-input-lg {
    padding: var(--lc-space-4) var(--lc-space-5);
    font-size: var(--lc-font-size-lg);
}

.lc-form-hint {
    font-size: var(--lc-font-size-xs);
    color: var(--lc-muted);
    margin-top: var(--lc-space-1);
}

.lc-form-error {
    font-size: var(--lc-font-size-xs);
    color: var(--lc-danger);
    margin-top: var(--lc-space-1);
}

/* Switch */
.lc-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--lc-space-3);
    cursor: pointer;
}

.lc-switch-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.lc-switch-slider {
    width: 44px;
    height: 24px;
    background: var(--lc-border-dark);
    border-radius: var(--lc-radius-pill);
    position: relative;
    transition: background var(--lc-transition);
}

.lc-switch-slider::after {
    content: '';
    position: absolute;
    left: 2px;
    top: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    box-shadow: var(--lc-shadow-sm);
    transition: transform var(--lc-transition);
}

.lc-switch-input:checked + .lc-switch-slider {
    background: var(--lc-primary);
}

.lc-switch-input:checked + .lc-switch-slider::after {
    transform: translateX(20px);
}

.lc-switch-input:focus-visible + .lc-switch-slider {
    box-shadow: var(--lc-shadow-focus);
}

/* ============================================================================
   Badge & Pill
   ============================================================================ */
.lc-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--lc-space-1);
    padding: var(--lc-space-1) var(--lc-space-2);
    font-size: var(--lc-font-size-xs);
    font-weight: var(--lc-font-semibold);
    border-radius: var(--lc-radius);
    background: var(--lc-bg-alt);
    color: var(--lc-text-secondary);
}

.lc-badge-primary {
    background: var(--lc-primary-light);
    color: var(--lc-primary);
}

.lc-badge-success {
    background: var(--lc-success-light);
    color: var(--lc-success);
}

.lc-badge-warning {
    background: var(--lc-warning-light);
    color: var(--lc-warning);
}

.lc-badge-danger {
    background: var(--lc-danger-light);
    color: var(--lc-danger);
}

.lc-pill {
    padding: var(--lc-space-1) var(--lc-space-3);
    border-radius: var(--lc-radius-pill);
}

/* ============================================================================
   Table Component
   ============================================================================ */
.lc-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
}

.lc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--lc-font-size-base);
}

.lc-table th {
    text-align: left;
    padding: var(--lc-space-3) var(--lc-space-4);
    font-size: var(--lc-font-size-xs);
    font-weight: var(--lc-font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--lc-muted);
    background: var(--lc-bg);
    border-bottom: 1px solid var(--lc-border);
}

.lc-table td {
    padding: var(--lc-space-4);
    border-bottom: 1px solid var(--lc-border-light);
    color: var(--lc-text);
}

.lc-table tbody tr:hover {
    background: var(--lc-bg);
}

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

/* ============================================================================
   Dropdown Component
   ============================================================================ */
.lc-dropdown {
    position: relative;
    display: inline-block;
}

.lc-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--lc-surface);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    box-shadow: var(--lc-shadow-lg);
    padding: var(--lc-space-2);
    margin-top: var(--lc-space-2);
    z-index: var(--lc-z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--lc-transition);
}

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

.lc-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
    padding: var(--lc-space-3) var(--lc-space-3);
    font-size: var(--lc-font-size-base);
    color: var(--lc-text-secondary);
    text-decoration: none;
    border-radius: var(--lc-radius);
    transition: all var(--lc-transition-fast);
}

.lc-dropdown-item:hover {
    background: var(--lc-bg-alt);
    color: var(--lc-text);
}

.lc-dropdown-divider {
    height: 1px;
    background: var(--lc-border-light);
    margin: var(--lc-space-2) 0;
}

/* ============================================================================
   Empty State Component
   ============================================================================ */
.lc-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--lc-space-12) var(--lc-space-6);
    text-align: center;
}

.lc-empty-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--lc-space-4);
    color: var(--lc-muted);
    opacity: 0.5;
}

.lc-empty-title {
    font-size: var(--lc-font-size-lg);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
    margin-bottom: var(--lc-space-2);
}

.lc-empty-text {
    font-size: var(--lc-font-size-base);
    color: var(--lc-muted);
    margin-bottom: var(--lc-space-4);
    max-width: 400px;
}

/* ============================================================================
   Toast Component
   ============================================================================ */
.lc-toast-container {
    position: fixed;
    bottom: var(--lc-space-6);
    right: var(--lc-space-6);
    z-index: var(--lc-z-toast);
    display: flex;
    flex-direction: column-reverse;
    gap: var(--lc-space-3);
    pointer-events: none;
    max-height: calc(100vh - var(--lc-space-12));
    overflow: hidden;
}

@media (max-width: 640px) {
    .lc-toast-container {
        left: var(--lc-space-4);
        right: var(--lc-space-4);
        bottom: var(--lc-space-4);
    }
}

.lc-toast {
    display: flex;
    align-items: flex-start;
    gap: var(--lc-space-3);
    padding: var(--lc-space-4);
    background: var(--lc-surface);
    color: var(--lc-text);
    border-radius: var(--lc-radius-xl);
    box-shadow: var(--lc-shadow-xl);
    min-width: 280px;
    max-width: 420px;
    animation: lc-toast-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: auto;
    border: 1px solid var(--lc-border);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.lc-toast.lc-toast-exiting {
    opacity: 0;
    transform: translateX(20px);
}

.lc-toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}

.lc-toast-content {
    flex: 1;
    font-size: var(--lc-font-size-sm);
    line-height: var(--lc-leading-normal);
}

.lc-toast-close {
    background: none;
    border: none;
    color: currentColor;
    opacity: 0.5;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: opacity var(--lc-transition);
}

.lc-toast-close:hover {
    opacity: 1;
}

.lc-toast-success {
    background: var(--lc-success-light);
    border-color: rgba(34, 197, 94, 0.3);
    color: #166534;
}

.lc-toast-success .lc-toast-icon {
    color: var(--lc-success);
}

.lc-toast-error {
    background: var(--lc-danger-light);
    border-color: rgba(239, 68, 68, 0.3);
    color: #991b1b;
}

.lc-toast-error .lc-toast-icon {
    color: var(--lc-danger);
}

.lc-toast-warning {
    background: var(--lc-warning-light);
    border-color: rgba(245, 158, 11, 0.3);
    color: #92400e;
}

.lc-toast-warning .lc-toast-icon {
    color: var(--lc-warning);
}

.lc-toast-info {
    background: var(--lc-info-light);
    border-color: rgba(59, 130, 246, 0.3);
    color: #1e40af;
}

.lc-toast-info .lc-toast-icon {
    color: var(--lc-info);
}

@keyframes lc-toast-in {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ============================================================================
   Modal Component
   ============================================================================ */
.lc-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--lc-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--lc-space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

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

.lc-modal {
    background: var(--lc-surface);
    border-radius: var(--lc-radius-xl);
    box-shadow: var(--lc-shadow-xl);
    max-width: 420px;
    width: 100%;
    max-height: calc(100vh - var(--lc-space-8));
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lc-modal-overlay.open .lc-modal {
    transform: scale(1) translateY(0);
}

.lc-modal-header {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
    padding: var(--lc-space-5);
    border-bottom: 1px solid var(--lc-border-light);
}

.lc-modal-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--lc-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.lc-modal-icon-danger {
    background: var(--lc-danger-light);
    color: var(--lc-danger);
}

.lc-modal-icon-success {
    background: var(--lc-success-light);
    color: var(--lc-success);
}

.lc-modal-icon-warning {
    background: var(--lc-warning-light);
    color: var(--lc-warning);
}

.lc-modal-icon-info {
    background: var(--lc-info-light);
    color: var(--lc-info);
}

.lc-modal-title {
    font-size: var(--lc-font-size-lg);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
    margin: 0;
}

.lc-modal-body {
    padding: var(--lc-space-5);
}

.lc-modal-body p {
    color: var(--lc-text-secondary);
    font-size: var(--lc-font-size-base);
    line-height: var(--lc-leading-relaxed);
    margin: 0;
}

.lc-modal-footer {
    display: flex;
    gap: var(--lc-space-3);
    padding: var(--lc-space-4) var(--lc-space-5);
    background: var(--lc-bg);
    border-top: 1px solid var(--lc-border-light);
}

.lc-modal-footer .lc-btn {
    flex: 1;
}

/* ============================================================================
   Feature Card (Management Tiles)
   ============================================================================ */
.lc-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--lc-space-5);
}

@media (max-width: 1024px) {
    .lc-feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .lc-feature-grid {
        grid-template-columns: 1fr;
    }
}

.lc-feature-card {
    display: flex;
    align-items: center;
    gap: var(--lc-space-4);
    padding: var(--lc-space-5);
    background: var(--lc-surface);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    text-decoration: none;
    color: inherit;
    transition: all var(--lc-transition);
}

.lc-feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--lc-shadow-card-hover);
    border-color: var(--lc-primary);
}

.lc-feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lc-gradient-card);
    border-radius: var(--lc-radius-lg);
    color: var(--lc-primary);
    flex-shrink: 0;
}

.lc-feature-content {
    flex: 1;
    min-width: 0;
}

.lc-feature-title {
    font-size: var(--lc-font-size-lg);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
    margin-bottom: var(--lc-space-1);
}

.lc-feature-desc {
    font-size: var(--lc-font-size-sm);
    color: var(--lc-muted);
}

.lc-feature-meta {
    font-size: var(--lc-font-size-xs);
    color: var(--lc-text-secondary);
    margin-top: var(--lc-space-1);
}

.lc-feature-arrow {
    color: var(--lc-muted);
    transition: transform var(--lc-transition);
}

.lc-feature-card:hover .lc-feature-arrow {
    transform: translateX(4px);
    color: var(--lc-primary);
}

/* ============================================================================
   Accordion Component (Builder)
   ============================================================================ */
.lc-accordion {
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    overflow: hidden;
}

.lc-accordion-item {
    border-bottom: 1px solid var(--lc-border-light);
}

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

.lc-accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--lc-space-4) var(--lc-space-5);
    background: var(--lc-surface);
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--lc-font-sans);
    transition: background var(--lc-transition);
}

.lc-accordion-header:hover {
    background: var(--lc-bg);
}

.lc-accordion-title {
    font-size: var(--lc-font-size-base);
    font-weight: var(--lc-font-semibold);
    color: var(--lc-text);
}

.lc-accordion-summary {
    font-size: var(--lc-font-size-xs);
    color: var(--lc-muted);
    margin-left: var(--lc-space-2);
}

.lc-accordion-icon {
    color: var(--lc-muted);
    transition: transform var(--lc-transition);
}

.lc-accordion-item.open .lc-accordion-icon {
    transform: rotate(180deg);
}

.lc-accordion-content {
    display: none;
    padding: 0 var(--lc-space-5) var(--lc-space-5);
    background: var(--lc-surface);
}

.lc-accordion-item.open .lc-accordion-content {
    display: block;
}

/* ============================================================================
   Builder Layout
   ============================================================================ */
.lc-builder {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--lc-topbar-height) - var(--lc-space-12));
}

.lc-builder-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--lc-space-4) var(--lc-space-5);
    background: var(--lc-surface);
    border: 1px solid var(--lc-border);
    border-radius: var(--lc-radius-xl);
    margin-bottom: var(--lc-space-5);
}

.lc-builder-toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--lc-space-3);
}

.lc-builder-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--lc-space-2);
}

.lc-builder-status {
    display: flex;
    align-items: center;
    gap: var(--lc-space-2);
    font-size: var(--lc-font-size-sm);
    color: var(--lc-muted);
}

.lc-builder-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lc-success);
}

.lc-builder-status-dot.unsaved {
    background: var(--lc-warning);
}

.lc-builder-body {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--lc-space-5);
    flex: 1;
    min-height: 0;
}

@media (max-width: 1024px) {
    .lc-builder-body {
        grid-template-columns: 1fr;
    }
}

.lc-builder-controls {
    overflow-y: auto;
}

.lc-builder-preview {
    position: sticky;
    top: var(--lc-space-5);
}

/* ============================================================================
   Login Page
   ============================================================================ */
.lc-auth-layout {
    min-height: 100vh;
    display: flex;
}

.lc-auth-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--lc-gradient-soft);
    padding: var(--lc-space-8);
}

.lc-auth-panel-content {
    max-width: 400px;
    text-align: center;
}

.lc-auth-panel-logo {
    font-size: var(--lc-font-size-5xl);
    font-weight: var(--lc-font-bold);
    background: var(--lc-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--lc-space-4);
}

.lc-auth-panel-logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
    margin-bottom: var(--lc-space-4);
}

.lc-auth-panel-tagline {
    font-size: var(--lc-font-size-xl);
    color: var(--lc-text-secondary);
    line-height: var(--lc-leading-relaxed);
}

.lc-auth-form-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--lc-space-8);
    background: var(--lc-surface);
}

.lc-auth-form-wrapper {
    width: 100%;
    max-width: 400px;
}

.lc-auth-title {
    font-size: var(--lc-font-size-3xl);
    font-weight: var(--lc-font-bold);
    color: var(--lc-text);
    margin-bottom: var(--lc-space-2);
}

.lc-auth-subtitle {
    font-size: var(--lc-font-size-base);
    color: var(--lc-muted);
    margin-bottom: var(--lc-space-8);
}

@media (max-width: 768px) {
    .lc-auth-layout {
        flex-direction: column;
    }
    
    .lc-auth-panel {
        padding: var(--lc-space-6);
    }
    
    .lc-auth-panel-logo {
        font-size: var(--lc-font-size-4xl);
    }
}

/* ============================================================================
   Responsive Sidebar
   ============================================================================ */
@media (max-width: 1024px) {
    .lc-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: var(--lc-shadow-xl);
    }
    
    .lc-sidebar.open {
        transform: translateX(0);
    }
    
    .lc-main {
        margin-left: 0;
    }
    
    .lc-mobile-menu-btn {
        display: flex;
    }
    
    .lc-sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.4);
        backdrop-filter: blur(2px);
        z-index: calc(var(--lc-z-sticky) - 1);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    
    .lc-sidebar-overlay.open {
        opacity: 1;
        visibility: visible;
    }
    
    .lc-nav-item {
        padding: var(--lc-space-4) var(--lc-space-3);
        min-height: 48px;
    }
    
    .lc-topbar {
        padding: 0 var(--lc-space-4);
    }
    
    .lc-content {
        padding: var(--lc-space-4);
    }
}

@media (max-width: 640px) {
    .lc-topbar-title {
        font-size: var(--lc-font-size-base);
    }
    
    .lc-page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--lc-space-3);
    }
    
    .lc-page-header-actions {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .lc-page-title {
        font-size: var(--lc-font-size-xl);
    }
    
    .lc-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .lc-btn-sm {
        min-height: 36px;
        min-width: 36px;
    }
}

/* ============================================================================
   Filter Bar Component
   ============================================================================ */
.lc-filters-bar {
    margin-bottom: var(--lc-space-6);
}

.lc-filters-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lc-space-3);
    align-items: center;
}

.lc-search-wrapper {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 300px;
}

.lc-search-icon {
    position: absolute;
    left: var(--lc-space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--lc-muted);
    pointer-events: none;
}

.lc-search-input {
    padding-left: var(--lc-space-10);
}

.lc-filter-select {
    min-width: 140px;
}

.lc-checkbox-filter {
    display: flex;
    align-items: center;
    gap: var(--lc-space-2);
    font-size: var(--lc-font-size-sm);
    color: var(--lc-text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .lc-filters-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .lc-search-wrapper {
        max-width: none;
        min-width: 0;
    }
    
    .lc-filter-select {
        min-width: 0;
        width: 100%;
    }
    
    .lc-checkbox-filter {
        justify-content: flex-start;
        padding: var(--lc-space-2) 0;
    }
}

/* ============================================================================
   Utility Classes
   ============================================================================ */
.lc-flex { display: flex; }
.lc-flex-col { flex-direction: column; }
.lc-items-center { align-items: center; }
.lc-justify-between { justify-content: space-between; }
.lc-gap-2 { gap: var(--lc-space-2); }
.lc-gap-3 { gap: var(--lc-space-3); }
.lc-gap-4 { gap: var(--lc-space-4); }
.lc-gap-6 { gap: var(--lc-space-6); }

.lc-mt-2 { margin-top: var(--lc-space-2); }
.lc-mt-4 { margin-top: var(--lc-space-4); }
.lc-mt-6 { margin-top: var(--lc-space-6); }
.lc-mb-2 { margin-bottom: var(--lc-space-2); }
.lc-mb-4 { margin-bottom: var(--lc-space-4); }
.lc-mb-6 { margin-bottom: var(--lc-space-6); }

.lc-text-center { text-align: center; }
.lc-text-muted { color: var(--lc-muted); }
.lc-text-sm { font-size: var(--lc-font-size-sm); }
.lc-text-xs { font-size: var(--lc-font-size-xs); }

.lc-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible styles for accessibility */
:focus-visible {
    outline: 2px solid var(--lc-primary);
    outline-offset: 2px;
}

/* ============================================================================
   Scrollbar Styling
   ============================================================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--lc-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--lc-border-dark);
    border-radius: var(--lc-radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--lc-muted);
}