/**
 * RunAway - Main Stylesheet
 * Description: Core design system with dark/light theme support
 * 
 * @author RunAway Development
 * @version 1.0.0
 * @created 2026-01-02
 */

/* ============================================
   IMPORTS & FONTS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
    /* Primary Colors */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Accent Colors */
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-teal: #14b8a6;
    
    /* Semantic Colors */
    --success: #10b981;
    --success-light: #34d399;
    --success-dark: #059669;
    --warning: #f59e0b;
    --warning-light: #fbbf24;
    --warning-dark: #d97706;
    --danger: #ef4444;
    --danger-light: #f87171;
    --danger-dark: #dc2626;
    --info: #06b6d4;
    --info-light: #22d3ee;
    --info-dark: #0891b2;
    
    /* Priority Colors */
    --priority-low: #6b7280;
    --priority-medium: #3b82f6;
    --priority-high: #f97316;
    --priority-urgent: #ef4444;
    
    /* Status Colors */
    --status-pending: #eab308;
    --status-in-progress: #3b82f6;
    --status-in-review: #8b5cf6;
    --status-completed: #22c55e;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
    --content-max-width: 1400px;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* ============================================
   DARK THEME (Default)
   ============================================ */
[data-theme="dark"] {
    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.8);
    --bg-hover: rgba(51, 65, 85, 0.5);
    --bg-active: rgba(59, 130, 246, 0.2);
    
    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    /* Border Colors */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --border-focus: var(--primary-500);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);
    
    /* Shadows for Dark */
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
    --shadow-glow-success: 0 0 20px rgba(16, 185, 129, 0.3);
    --shadow-glow-danger: 0 0 20px rgba(239, 68, 68, 0.3);
    
    /* Scrollbar */
    --scrollbar-track: #1e293b;
    --scrollbar-thumb: #475569;
    --scrollbar-thumb-hover: #64748b;
    
    /* Input */
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus-bg: rgba(15, 23, 42, 0.8);
    --input-placeholder: #64748b;
}

/* ============================================
   LIGHT THEME
   ============================================ */
[data-theme="light"] {
    /* Background Colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-hover: rgba(241, 245, 249, 0.8);
    --bg-active: rgba(59, 130, 246, 0.1);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #f1f5f9;
    
    /* Border Colors */
    --border-primary: rgba(0, 0, 0, 0.1);
    --border-secondary: rgba(0, 0, 0, 0.05);
    --border-focus: var(--primary-500);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-hover: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-blur: blur(20px);
    
    /* Shadows for Light */
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.2);
    --shadow-glow-success: 0 0 20px rgba(16, 185, 129, 0.2);
    --shadow-glow-danger: 0 0 20px rgba(239, 68, 68, 0.2);
    
    /* Scrollbar */
    --scrollbar-track: #f1f5f9;
    --scrollbar-thumb: #cbd5e1;
    --scrollbar-thumb-hover: #94a3b8;
    
    /* Input */
    --input-bg: rgba(255, 255, 255, 0.8);
    --input-border: rgba(0, 0, 0, 0.1);
    --input-focus-bg: #ffffff;
    --input-placeholder: #94a3b8;
}

/* ============================================
   BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Background gradient for dark mode */
[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
    background-attachment: fixed;
}

/* Background pattern for light mode */
[data-theme="light"] body {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f8fafc 100%);
    background-attachment: fixed;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

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

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-400);
}

small {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ============================================
   LAYOUT STRUCTURE
   ============================================ */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    z-index: var(--z-fixed);
    transition: width var(--transition-normal), transform var(--transition-normal);
    overflow-x: hidden;
    overflow-y: auto;
}

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

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed + .main-content,
.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-6);
}

.content-wrapper {
    padding: var(--spacing-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* ============================================
   GLASSMORPHISM CARD
   ============================================ */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.glass-card-static {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
}

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

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

/* Primary Button with Glow */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-primary:hover::after {
    transform: translateX(100%);
}

/* Secondary Button */
.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary-500);
}

/* Success Button */
.btn-success {
    background: linear-gradient(135deg, var(--success), var(--success-dark));
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-success);
}

/* Danger Button */
.btn-danger {
    background: linear-gradient(135deg, var(--danger), var(--danger-dark));
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-danger);
}

/* Warning Button */
.btn-warning {
    background: linear-gradient(135deg, var(--warning), var(--warning-dark));
    color: white;
}

/* Info Button */
.btn-info {
    background: linear-gradient(135deg, var(--info), var(--info-dark));
    color: white;
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

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

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-lg);
}

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

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

/* ============================================
   FORM ELEMENTS
   ============================================ */
.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    background: var(--input-focus-bg);
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

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

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

.form-group {
    margin-bottom: var(--spacing-4);
}

/* Select */
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-3) center;
    background-size: 1.25rem;
    padding-right: var(--spacing-10);
}

/* Textarea */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Checkbox & Radio Custom */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.form-check-input {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-size: 14px;
    background-position: center;
    background-repeat: no-repeat;
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-input[type="radio"]:checked {
    background-image: none;
    box-shadow: inset 0 0 0 4px var(--bg-primary);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    line-height: 1;
}

.badge-primary {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-400);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-light);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-light);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-light);
}

.badge-info {
    background: rgba(6, 182, 212, 0.2);
    color: var(--info-light);
}

.badge-secondary {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-secondary);
}

/* Priority Badges */
.badge-priority-low { 
    background: rgba(107, 114, 128, 0.2); 
    color: #9ca3af; 
}
.badge-priority-medium { 
    background: rgba(59, 130, 246, 0.2); 
    color: #60a5fa; 
}
.badge-priority-high { 
    background: rgba(249, 115, 22, 0.2); 
    color: #fb923c; 
}
.badge-priority-urgent { 
    background: rgba(239, 68, 68, 0.2); 
    color: #f87171; 
}

/* Status Badges */
.badge-status-pending { 
    background: rgba(234, 179, 8, 0.2); 
    color: #fbbf24; 
}
.badge-status-in-progress { 
    background: rgba(59, 130, 246, 0.2); 
    color: #60a5fa; 
}
.badge-status-in-review { 
    background: rgba(139, 92, 246, 0.2); 
    color: #a78bfa; 
}
.badge-status-completed { 
    background: rgba(34, 197, 94, 0.2); 
    color: #4ade80; 
}

/* ============================================
   SIDEBAR STYLES
   ============================================ */
.sidebar-header {
    padding: var(--spacing-5) var(--spacing-4);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

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

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
}

.sidebar-logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary-400), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .nav-text {
    display: none;
}

.sidebar-nav {
    padding: var(--spacing-4) 0;
}

.sidebar-section {
    margin-bottom: var(--spacing-4);
}

.sidebar-section-title {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    margin: var(--spacing-1) var(--spacing-2);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    text-decoration: none;
}

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

.nav-item.active {
    background: var(--bg-active);
    color: var(--primary-500);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    width: 3px;
    height: 24px;
    background: var(--primary-500);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-text {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
}

.nav-badge {
    background: var(--primary-500);
    color: white;
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    position: absolute;
    top: var(--spacing-4);
    right: calc(-1 * var(--spacing-4));
    width: 28px;
    height: 28px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    z-index: 10;
}

.sidebar-toggle:hover {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

/* ============================================
   HEADER STYLES
   ============================================ */
.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.header-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

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

.header-search input {
    padding-left: var(--spacing-10);
}

.header-search-icon {
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-left: auto;
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    padding: 2px;
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    position: relative;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background: white;
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

[data-theme="light"] .theme-toggle::before {
    transform: translateX(20px);
}

.theme-toggle-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
}

.theme-toggle .sun-icon {
    left: 6px;
    color: #fbbf24;
    opacity: 0;
}

.theme-toggle .moon-icon {
    right: 6px;
    color: #94a3b8;
}

[data-theme="light"] .theme-toggle .sun-icon {
    opacity: 1;
}

[data-theme="light"] .theme-toggle .moon-icon {
    opacity: 0;
}

/* Notifications */
.notification-btn {
    position: relative;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 18px;
    height: 18px;
    background: var(--danger);
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: var(--font-bold);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-primary);
}

/* User Profile */
.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-semibold);
    color: white;
    font-size: var(--font-size-sm);
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    line-height: 1.2;
}

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

/* ============================================
   AVATAR STYLES
   ============================================ */
.avatar {
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-semibold);
    color: white;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar-xs { width: 24px; height: 24px; font-size: 10px; }
.avatar-sm { width: 32px; height: 32px; font-size: 12px; }
.avatar-md { width: 40px; height: 40px; font-size: 14px; }
.avatar-lg { width: 48px; height: 48px; font-size: 16px; }
.avatar-xl { width: 64px; height: 64px; font-size: 20px; }

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Avatar Group */
.avatar-group {
    display: flex;
}

.avatar-group .avatar {
    margin-left: -8px;
    border: 2px solid var(--bg-primary);
}

.avatar-group .avatar:first-child {
    margin-left: 0;
}

/* ============================================
   DROPDOWN MENU
   ============================================ */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2);
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

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

.dropdown-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.dropdown-divider {
    height: 1px;
    background: var(--glass-border);
    margin: var(--spacing-2) 0;
}

/* ============================================
   MODAL STYLES
   ============================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--glass-border);
}

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

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-6);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--glass-border);
}

/* Modal Sizes */
.modal-sm .modal-content { max-width: 400px; }
.modal-lg .modal-content { max-width: 700px; }
.modal-xl .modal-content { max-width: 900px; }
.modal-full .modal-content { max-width: 95vw; width: 95vw; }

/* ============================================
   LOADING STATES
   ============================================ */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--glass-border);
    border-top-color: var(--primary-500);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

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

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-16);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-6);
}

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

.empty-state-text {
    color: var(--text-muted);
    max-width: 400px;
    margin-bottom: var(--spacing-6);
}

/* ============================================
   TABLES
   ============================================ */
.table-wrapper {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.table th {
    font-size: var(--font-size-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--glass-bg);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

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

/* ============================================
   UTILITIES
   ============================================ */
/* Display */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.d-block { display: block !important; }
.d-inline-flex { display: inline-flex !important; }

/* Flex */
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-end { justify-content: flex-end !important; }
.align-center { align-items: center !important; }
.align-start { align-items: flex-start !important; }
.align-end { align-items: flex-end !important; }
.flex-1 { flex: 1 !important; }
.gap-1 { gap: var(--spacing-1) !important; }
.gap-2 { gap: var(--spacing-2) !important; }
.gap-3 { gap: var(--spacing-3) !important; }
.gap-4 { gap: var(--spacing-4) !important; }
.gap-6 { gap: var(--spacing-6) !important; }

/* Text */
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }

/* Font Weight */
.fw-normal { font-weight: var(--font-normal) !important; }
.fw-medium { font-weight: var(--font-medium) !important; }
.fw-semibold { font-weight: var(--font-semibold) !important; }
.fw-bold { font-weight: var(--font-bold) !important; }

/* Margin */
.m-0 { margin: 0 !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mb-6 { margin-bottom: var(--spacing-6) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mt-6 { margin-top: var(--spacing-6) !important; }
.me-2 { margin-right: var(--spacing-2) !important; }
.me-3 { margin-right: var(--spacing-3) !important; }
.ms-auto { margin-left: auto !important; }

/* Padding */
.p-0 { padding: 0 !important; }
.p-4 { padding: var(--spacing-4) !important; }
.p-6 { padding: var(--spacing-6) !important; }
.px-4 { padding-left: var(--spacing-4) !important; padding-right: var(--spacing-4) !important; }
.py-2 { padding-top: var(--spacing-2) !important; padding-bottom: var(--spacing-2) !important; }

/* Border Radius */
.rounded { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Width */
.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }

/* Cursor */
.cursor-pointer { cursor: pointer !important; }

/* Transition */
.transition { transition: all var(--transition-normal) !important; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header-toggle {
        display: flex;
    }
    
    .header-search {
        display: none;
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        padding: var(--spacing-4);
    }
    
    .user-info {
        display: none;
    }
    
    .modal-content {
        margin: var(--spacing-4);
        max-height: calc(100vh - 32px);
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0 var(--spacing-4);
    }
    
    .header-right {
        gap: var(--spacing-2);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.animate-fade-in { animation: fadeIn var(--transition-normal) ease forwards; }
.animate-slide-up { animation: slideUp var(--transition-normal) ease forwards; }
.animate-slide-down { animation: slideDown var(--transition-normal) ease forwards; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }

/* Staggered animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }