/* =============================================================================
   ISPA DESIGN SYSTEM v6.0 - Industrial Premium Edition
   A sophisticated design system for manufacturing management
   ============================================================================= */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* ========== COLOR SYSTEM ========== */
    
    /* Primary - Deep Industrial Blue */
    --primary-50: #EEF4FF;
    --primary-100: #D9E5FF;
    --primary-200: #BCD0FF;
    --primary-300: #8EB0FF;
    --primary-400: #5985FF;
    --primary-500: #3361FF;
    --primary-600: #1A3FF5;
    --primary-700: #1330E1;
    --primary-800: #162AB6;
    --primary-900: #18288F;
    --primary-950: #0F1857;
    
    /* Accent - Electric Cyan */
    --accent-400: #22D3EE;
    --accent-500: #06B6D4;
    --accent-600: #0891B2;
    
    /* Neutral - Slate with warmth */
    --neutral-25: #FCFCFD;
    --neutral-50: #F8FAFC;
    --neutral-100: #F1F5F9;
    --neutral-200: #E2E8F0;
    --neutral-300: #CBD5E1;
    --neutral-400: #94A3B8;
    --neutral-500: #64748B;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1E293B;
    --neutral-900: #0F172A;
    --neutral-950: #020617;
    
    /* Semantic Colors */
    --success-50: #ECFDF5;
    --success-100: #D1FAE5;
    --success-400: #34D399;
    --success-500: #10B981;
    --success-600: #059669;
    --success-700: #047857;
    
    --warning-50: #FFFBEB;
    --warning-100: #FEF3C7;
    --warning-400: #FBBF24;
    --warning-500: #F59E0B;
    --warning-600: #D97706;
    --warning-700: #B45309;
    
    --danger-50: #FEF2F2;
    --danger-100: #FEE2E2;
    --danger-400: #F87171;
    --danger-500: #EF4444;
    --danger-600: #DC2626;
    --danger-700: #B91C1C;
    
    --info-50: #EFF6FF;
    --info-100: #DBEAFE;
    --info-400: #60A5FA;
    --info-500: #3B82F6;
    --info-600: #2563EB;
    
    /* ========== SURFACE SYSTEM ========== */
    --bg-body: #F0F4F8;
    --bg-surface: #FFFFFF;
    --bg-surface-secondary: #F8FAFC;
    --bg-surface-tertiary: #F1F5F9;
    --bg-elevated: #FFFFFF;
    --bg-sunken: #E8EDF3;
    --bg-overlay: rgba(15, 23, 42, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.8);
    
    /* ========== SIDEBAR SYSTEM ========== */
    --sidebar-width: 272px;
    --sidebar-collapsed-width: 80px;
    --sidebar-bg: linear-gradient(195deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    --sidebar-glass: rgba(15, 23, 42, 0.95);
    --sidebar-text: rgba(255, 255, 255, 0.65);
    --sidebar-text-hover: rgba(255, 255, 255, 0.9);
    --sidebar-text-active: #FFFFFF;
    --sidebar-hover-bg: rgba(255, 255, 255, 0.06);
    --sidebar-active-bg: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    --sidebar-border: rgba(255, 255, 255, 0.08);
    --sidebar-glow: 0 0 40px rgba(51, 97, 255, 0.15);
    
    /* ========== HEADER SYSTEM ========== */
    --header-height: 72px;
    --header-bg: rgba(255, 255, 255, 0.9);
    --header-backdrop: blur(20px) saturate(180%);
    --header-border: rgba(0, 0, 0, 0.06);
    
    /* ========== BORDER SYSTEM ========== */
    --border-subtle: rgba(0, 0, 0, 0.04);
    --border-default: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.12);
    --border-interactive: var(--primary-500);
    
    /* ========== TEXT SYSTEM ========== */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-muted: #94A3B8;
    --text-disabled: #CBD5E1;
    --text-inverse: #FFFFFF;
    --text-link: var(--primary-600);
    --text-link-hover: var(--primary-700);
    
    /* ========== TYPOGRAPHY ========== */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.8125rem;    /* 13px */
    --text-base: 0.9375rem;  /* 15px */
    --text-lg: 1.0625rem;    /* 17px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    
    --tracking-tight: -0.02em;
    --tracking-normal: 0;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    
    /* ========== SPACING SCALE ========== */
    --space-0: 0;
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    
    /* ========== RADIUS SCALE ========== */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;
    --radius-full: 9999px;
    
    /* ========== SHADOW SYSTEM ========== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.04);
    
    /* Colored shadows */
    --shadow-primary: 0 4px 14px rgba(51, 97, 255, 0.25);
    --shadow-primary-lg: 0 8px 24px rgba(51, 97, 255, 0.3);
    --shadow-success: 0 4px 14px rgba(16, 185, 129, 0.25);
    --shadow-warning: 0 4px 14px rgba(245, 158, 11, 0.25);
    --shadow-danger: 0 4px 14px rgba(239, 68, 68, 0.25);
    
    /* ========== TRANSITIONS ========== */
    --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    
    --transition-fast: var(--duration-fast) var(--ease-out);
    --transition-normal: var(--duration-normal) var(--ease-out);
    --transition-slow: var(--duration-slow) var(--ease-out);
}

/* =============================================================================
   BASE RESET & FOUNDATION
   ============================================================================= */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-body);
    min-height: 100vh;
}

/* Selection */
::selection {
    background: var(--primary-500);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--neutral-300);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-400);
}

/* =============================================================================
   LAYOUT STRUCTURE
   ============================================================================= */

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

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

.main-content {
    flex: 1;
    padding: var(--space-8);
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

/* =============================================================================
   SIDEBAR - Industrial Navigation
   ============================================================================= */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: all var(--transition-normal);
    box-shadow: var(--sidebar-glow);
}

.sidebar::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--sidebar-border);
    position: relative;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.sidebar-brand:hover {
    transform: translateX(2px);
}

.brand-logo {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 50%, var(--accent-500) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-primary-lg);
    position: relative;
    overflow: hidden;
}

.brand-logo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-name {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--sidebar-text-active);
    letter-spacing: var(--tracking-tight);
    line-height: 1;
}

.brand-tagline {
    font-size: var(--text-xs);
    color: var(--sidebar-text);
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
    overflow-x: hidden;
}

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

.nav-section-title {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--sidebar-text);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    margin-bottom: 2px;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    transition: transform var(--transition-fast);
}

.nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
}

.nav-link:hover i {
    transform: scale(1.1);
}

.nav-link.active {
    color: var(--sidebar-text-active);
    background: var(--sidebar-active-bg);
    box-shadow: var(--shadow-primary);
    font-weight: 600;
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: white;
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
    opacity: 0;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--sidebar-border);
    margin-top: auto;
}

.user-card {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-600) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-sm);
    font-weight: 700;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--sidebar-text-active);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

/* Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* =============================================================================
   TOP HEADER - Glass Morphism
   ============================================================================= */

.top-header {
    height: var(--header-height);
    background: var(--header-bg);
    backdrop-filter: var(--header-backdrop);
    -webkit-backdrop-filter: var(--header-backdrop);
    border-bottom: 1px solid var(--header-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-8);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-surface-secondary);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.mobile-menu-btn:hover {
    background: var(--bg-surface-tertiary);
    color: var(--text-primary);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
}

.breadcrumb-item {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
    color: var(--primary-600);
}

.breadcrumb-separator {
    color: var(--text-disabled);
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 600;
}

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.workshop-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.workshop-toggle:hover {
    border-color: var(--primary-300);
    color: var(--primary-600);
}

.workshop-toggle.active {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-600);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.header-btn:hover {
    background: var(--bg-surface-secondary);
    color: var(--primary-600);
}

.badge-counter {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--danger-500);
    color: white;
    font-size: 0.6875rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =============================================================================
   CARDS - Elevated Surfaces
   ============================================================================= */

.card {
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.card-title i {
    color: var(--primary-500);
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-surface-secondary);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* Portal Cards */
.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-6);
}

.portal-card {
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-subtle);
    padding: var(--space-6);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.portal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.portal-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-default);
}

.portal-card:hover::before {
    opacity: 1;
}

.portal-card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
    position: relative;
}

.portal-card-icon.blue {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    color: var(--primary-600);
}

.portal-card-icon.green {
    background: linear-gradient(135deg, var(--success-50) 0%, var(--success-100) 100%);
    color: var(--success-600);
}

.portal-card-icon.orange {
    background: linear-gradient(135deg, var(--warning-50) 0%, var(--warning-100) 100%);
    color: var(--warning-600);
}

.portal-card-icon.cyan {
    background: linear-gradient(135deg, var(--info-50) 0%, var(--info-100) 100%);
    color: var(--info-600);
}

.portal-card-icon.red {
    background: linear-gradient(135deg, var(--danger-50) 0%, var(--danger-100) 100%);
    color: var(--danger-600);
}

.portal-card-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.portal-card-desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-4);
}

.portal-card-stats {
    display: flex;
    gap: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.portal-stat {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

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

/* =============================================================================
   STAT CARDS - KPI Display
   ============================================================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-5);
}

.stat-card {
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    padding: var(--space-5);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    transition: all var(--transition-normal);
}

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

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: var(--shadow-primary);
}

.stat-icon.green {
    background: linear-gradient(135deg, var(--success-500) 0%, var(--success-600) 100%);
    color: white;
    box-shadow: var(--shadow-success);
}

.stat-icon.orange {
    background: linear-gradient(135deg, var(--warning-500) 0%, var(--warning-600) 100%);
    color: white;
    box-shadow: var(--shadow-warning);
}

.stat-icon.red {
    background: linear-gradient(135deg, var(--danger-500) 0%, var(--danger-600) 100%);
    color: white;
    box-shadow: var(--shadow-danger);
}

.stat-icon.cyan {
    background: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
    color: white;
}

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

.stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: var(--tracking-tight);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
    font-weight: 500;
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-top: var(--space-2);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.stat-change.positive {
    background: var(--success-50);
    color: var(--success-600);
}

.stat-change.negative {
    background: var(--danger-50);
    color: var(--danger-600);
}

/* =============================================================================
   BUTTONS - Interactive Elements
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    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:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(51, 97, 255, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary-lg);
}

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

.btn-secondary:hover {
    background: var(--bg-surface-secondary);
    border-color: var(--neutral-400);
}

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

.btn-outline:hover {
    background: var(--bg-surface-secondary);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success-500) 0%, var(--success-600) 100%);
    color: white;
    box-shadow: var(--shadow-success);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-600) 0%, var(--success-700) 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-500) 0%, var(--danger-600) 100%);
    color: white;
    box-shadow: var(--shadow-danger);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-600) 0%, var(--danger-700) 100%);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-500) 0%, var(--warning-600) 100%);
    color: white;
    box-shadow: var(--shadow-warning);
}

.btn-white {
    background: white;
    color: var(--text-primary);
    border-color: rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
    background: var(--neutral-50);
    border-color: rgba(0, 0, 0, 0.15);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    border-radius: var(--radius-md);
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

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

.w-full {
    width: 100%;
}

/* =============================================================================
   FORMS - Input Elements
   ============================================================================= */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.form-label.required::after {
    content: ' *';
    color: var(--danger-500);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-control:hover {
    border-color: var(--border-strong);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(51, 97, 255, 0.1);
}

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

.form-control:disabled {
    background: var(--bg-surface-tertiary);
    color: var(--text-disabled);
    cursor: not-allowed;
}

select.form-control {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-10);
    appearance: none;
}

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

.form-text {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-2);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--danger-600);
    margin-top: var(--space-2);
}

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

.input-group .form-control {
    flex: 1;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-surface-secondary);
    border: 1px solid var(--border-default);
    color: var(--text-tertiary);
}

.input-group-text:first-child {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    border-right: none;
}

.input-group-text:last-child {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    border-left: none;
}

.input-group .form-control:not(:first-child):not(:last-child) {
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-group .form-control:last-child {
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

/* =============================================================================
   TABLES - Data Display
   ============================================================================= */

.table-container {
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
}

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

thead {
    background: var(--bg-surface-secondary);
}

th {
    text-align: left;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-default);
}

td {
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

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

tbody tr:hover {
    background: var(--bg-surface-secondary);
}

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

/* =============================================================================
   BADGES - Status Indicators
   ============================================================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 4px 10px;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-700);
}

.badge-success {
    background: var(--success-100);
    color: var(--success-700);
}

.badge-warning {
    background: var(--warning-100);
    color: var(--warning-700);
}

.badge-danger {
    background: var(--danger-100);
    color: var(--danger-700);
}

.badge-info {
    background: var(--info-100);
    color: var(--info-700);
}

.badge-neutral {
    background: var(--neutral-100);
    color: var(--neutral-700);
}

/* Badge with dot */
.badge-dot {
    padding-left: var(--space-2);
}

.badge-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* =============================================================================
   ALERTS - Feedback Messages
   ============================================================================= */

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    border: 1px solid transparent;
}

.alert i {
    font-size: 1.125rem;
    margin-top: 1px;
}

.alert-info {
    background: var(--info-50);
    color: var(--info-700);
    border-color: var(--info-200);
}

.alert-success {
    background: var(--success-50);
    color: var(--success-700);
    border-color: var(--success-200);
}

.alert-warning {
    background: var(--warning-50);
    color: var(--warning-700);
    border-color: var(--warning-200);
}

.alert-danger, .alert-error {
    background: var(--danger-50);
    color: var(--danger-700);
    border-color: var(--danger-200);
}

/* =============================================================================
   PAGE HEADERS
   ============================================================================= */

.page-header {
    margin-bottom: var(--space-8);
}

.page-header h1 {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    line-height: 1.2;
}

.page-header h1 i {
    color: var(--primary-500);
}

.page-header p {
    font-size: var(--text-base);
    color: var(--text-tertiary);
    margin-top: var(--space-2);
    max-width: 600px;
}

.page-header-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

/* =============================================================================
   EMPTY STATES
   ============================================================================= */

.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--neutral-100) 0%, var(--neutral-200) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-muted);
}

.empty-state-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--text-base);
    color: var(--text-tertiary);
    max-width: 400px;
    margin: 0 auto var(--space-6);
    line-height: var(--leading-relaxed);
}

/* =============================================================================
   DROPDOWN MENUS
   ============================================================================= */

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2);
    margin-bottom: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.dropdown-item.danger {
    color: var(--danger-600);
}

.dropdown-item.danger:hover {
    background: var(--danger-50);
}

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

/* =============================================================================
   FOOTER
   ============================================================================= */

.footer {
    padding: var(--space-6) var(--space-8);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--text-muted);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-surface);
    margin-top: auto;
}

/* =============================================================================
   LOGIN PAGE - Premium Authentication
   ============================================================================= */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--neutral-900) 0%, var(--neutral-950) 100%);
    padding: var(--space-6);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-500) 0%, transparent 70%);
    opacity: 0.1;
    top: -200px;
    right: -200px;
    animation: pulse 8s ease-in-out infinite;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-500) 0%, transparent 70%);
    opacity: 0.1;
    bottom: -100px;
    left: -100px;
    animation: pulse 8s ease-in-out infinite 4s;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.1); opacity: 0.15; }
}

.login-container {
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--bg-surface);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-10);
    backdrop-filter: blur(20px);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 50%, var(--accent-500) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-5);
    font-size: 2.5rem;
    color: white;
    box-shadow: var(--shadow-primary-lg);
    position: relative;
}

.login-logo::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 50%);
}

.login-title {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    letter-spacing: var(--tracking-tight);
}

.login-subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.login-form .form-group {
    margin-bottom: var(--space-5);
}

.login-form .form-control {
    padding: var(--space-4);
    font-size: var(--text-base);
}

.login-form .btn-primary {
    width: 100%;
    padding: var(--space-4);
    font-size: var(--text-base);
    margin-top: var(--space-2);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border-subtle);
}

.login-footer-text {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

/* Demo accounts section */
.demo-accounts {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border-subtle);
}

.demo-accounts-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-4);
}

.demo-account-list {
    display: grid;
    gap: var(--space-2);
}

.demo-account {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-surface-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.demo-account:hover {
    background: var(--bg-surface-tertiary);
    transform: translateX(4px);
}

.demo-account-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.demo-account-role {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* =============================================================================
   UTILITY CLASSES
   ============================================================================= */

/* Margins */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.me-1 { margin-right: var(--space-1); }
.me-2 { margin-right: var(--space-2); }
.me-3 { margin-right: var(--space-3); }
.ms-1 { margin-left: var(--space-1); }
.ms-2 { margin-left: var(--space-2); }
.ms-auto { margin-left: auto; }

/* Padding */
.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }

/* Flexbox */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-none { display: none; }
.d-block { display: block; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }
.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.flex-1 { flex: 1; }

/* Grid */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: calc(var(--space-4) * -0.5);
}

.col-lg-4, .col-lg-6, .col-lg-8, .col-md-6 {
    padding: calc(var(--space-4) * 0.5);
    width: 100%;
}

@media (min-width: 768px) {
    .col-md-6 { width: 50%; }
}

@media (min-width: 992px) {
    .col-lg-4 { width: 33.333%; }
    .col-lg-6 { width: 50%; }
    .col-lg-8 { width: 66.666%; }
}

/* Text */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary-600); }
.text-success { color: var(--success-600); }
.text-warning { color: var(--warning-600); }
.text-danger { color: var(--danger-600); }
.text-info { color: var(--info-600); }

.fw-normal { font-weight: 400; }
.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.fw-bold { font-weight: 700; }

.fs-sm { font-size: var(--text-sm); }
.fs-base { font-size: var(--text-base); }
.fs-lg { font-size: var(--text-lg); }

/* Visibility */
@media (max-width: 768px) {
    .d-md-none { display: none !important; }
}
@media (min-width: 769px) {
    .d-md-inline { display: inline !important; }
    .d-md-flex { display: flex !important; }
}

/* =============================================================================
   ANIMATIONS
   ============================================================================= */

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

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

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.fade-in { animation: fadeIn 0.3s var(--ease-out); }
.slide-in { animation: slideIn 0.3s var(--ease-out); }
.scale-in { animation: scaleIn 0.2s var(--ease-out); }

/* Staggered animations */
.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }

/* =============================================================================
   RESPONSIVE
   ============================================================================= */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .top-header {
        padding: 0 var(--space-4);
        gap: var(--space-3);
    }
    
    .header-left {
        gap: var(--space-3);
        flex: 1;
        min-width: 0;
    }
    
    .nav-breadcrumb {
        min-width: 0;
        overflow: hidden;
    }
    
    .nav-breadcrumb-current {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .header-right {
        flex-shrink: 0;
    }
    
    .main-content {
        padding: var(--space-5);
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-4);
    }
    
    .portal-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-header h1 {
        font-size: var(--text-2xl);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .top-header {
        padding: 0 var(--space-4);
    }
    
    .header-right .btn span {
        display: none;
    }
    
    .login-card {
        padding: var(--space-6);
    }
}

/* =============================================================================
   WORKSHOP MODE - Tablet Optimized
   ============================================================================= */

body.workshop-mode {
    --text-base: 1.0625rem;
    --text-sm: 0.9375rem;
    --text-xs: 0.8125rem;
}

body.workshop-mode .btn {
    padding: var(--space-3) var(--space-6);
    min-height: 48px;
}

body.workshop-mode .form-control {
    padding: var(--space-4);
    min-height: 52px;
    font-size: var(--text-base);
}

body.workshop-mode .nav-link {
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
}

body.workshop-mode td,
body.workshop-mode th {
    padding: var(--space-5) var(--space-6);
}