/* SynthForge Enhanced Design System Foundation */

/* ===== DESIGN TOKENS ===== */

:root {
  /* Spacing System - 8px grid */
  --space-0: 0;
  --space-1: 0.125rem;  /* 2px */
  --space-2: 0.25rem;   /* 4px */
  --space-3: 0.375rem;  /* 6px */
  --space-4: 0.5rem;    /* 8px */
  --space-6: 0.75rem;   /* 12px */
  --space-8: 1rem;      /* 16px */
  --space-10: 1.25rem;  /* 20px */
  --space-12: 1.5rem;   /* 24px */
  --space-16: 2rem;     /* 32px */
  --space-20: 2.5rem;   /* 40px */
  --space-24: 3rem;     /* 48px */
  --space-32: 4rem;     /* 64px */
  --space-40: 5rem;     /* 80px */
  --space-48: 6rem;     /* 96px */
  --space-56: 7rem;     /* 112px */
  --space-64: 8rem;     /* 128px */

  /* Typography Scale */
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */
  --font-size-6xl: 3.75rem;    /* 60px */

  /* Line Heights */
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Font Weights */
  --font-weight-thin: 100;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;   /* 4px */
  --radius-base: 0.5rem;  /* 8px */
  --radius-md: 0.75rem;   /* 12px */
  --radius-lg: 1rem;      /* 16px */
  --radius-xl: 1.5rem;    /* 24px */
  --radius-2xl: 2rem;     /* 32px */
  --radius-full: 9999px;

  /* Responsive Breakpoints */
  --breakpoint-xs: 475px;
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* Z-Index Scale */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-auto: auto;

  /* Transition Durations */
  --duration-75: 75ms;
  --duration-100: 100ms;
  --duration-150: 150ms;
  --duration-200: 200ms;
  --duration-300: 300ms;
  --duration-500: 500ms;
  --duration-700: 700ms;
  --duration-1000: 1000ms;

  /* Transition Timing Functions */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== ENHANCED THEME SYSTEM ===== */

/* Light Theme Enhanced Tokens */
[data-theme="light"] {
  /* Surface Colors */
  --surface-primary: #ffffff;
  --surface-secondary: #f8f9fa;
  --surface-tertiary: #f1f3f4;
  --surface-elevated: #ffffff;
  --surface-overlay: rgba(255, 255, 255, 0.95);
  --surface-disabled: #f5f5f5;

  /* Border Colors */
  --border-primary: #e9ecef;
  --border-secondary: #dee2e6;
  --border-tertiary: #ced4da;
  --border-focus: #0d6efd;
  --border-error: #dc3545;
  --border-success: #198754;
  --border-warning: #ffc107;
  --border-disabled: #e9ecef;

  /* Text Colors */
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-tertiary: #adb5bd;
  --text-quaternary: #ced4da;
  --text-disabled: #adb5bd;
  --text-inverse: #ffffff;
  --text-link: #0d6efd;
  --text-link-hover: #0a58ca;
  --text-muted: #6c757d;
  --muted: #6c757d;

  /* Shadow System */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

  /* Interactive States */
  --state-hover: rgba(0, 0, 0, 0.04);
  --state-active: rgba(0, 0, 0, 0.08);
  --state-focus: rgba(13, 110, 253, 0.1);
  --state-selected: rgba(13, 110, 253, 0.08);
  --state-disabled: rgba(0, 0, 0, 0.04);

  /* Status Colors */
  --status-success: #198754;
  --status-success-bg: rgba(25, 135, 84, 0.1);
  --status-warning: #ffc107;
  --status-warning-bg: rgba(255, 193, 7, 0.1);
  --status-error: #dc3545;
  --status-error-bg: rgba(220, 53, 69, 0.1);
  --status-info: #0dcaf0;
  --status-info-bg: rgba(13, 202, 240, 0.1);
}

/* Dark Theme Enhanced Tokens */
[data-theme="dark"] {
  /* Surface Colors */
  --surface-primary: #1a1a1a;
  --surface-secondary: #2a2a2a;
  --surface-tertiary: #3a3a3a;
  --surface-elevated: #2a2a2a;
  --surface-overlay: rgba(26, 26, 26, 0.95);
  --surface-disabled: #2a2a2a;

  /* Border Colors */
  --border-primary: #404040;
  --border-secondary: #525252;
  --border-tertiary: #737373;
  --border-focus: #0d6efd;
  --border-error: #dc3545;
  --border-success: #198754;
  --border-warning: #ffc107;
  --border-disabled: #404040;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-quaternary: #6b7280;
  --text-disabled: #6b7280;
  --text-inverse: #000000;
  --text-link: #0d6efd;
  --text-link-hover: #3d8bfd;
  --text-muted: #d1d5db;
  --muted: #d1d5db;

  /* Shadow System */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.2);

  /* Interactive States */
  --state-hover: rgba(255, 255, 255, 0.08);
  --state-active: rgba(255, 255, 255, 0.12);
  --state-focus: rgba(13, 110, 253, 0.2);
  --state-selected: rgba(13, 110, 253, 0.15);
  --state-disabled: rgba(255, 255, 255, 0.04);

  /* Status Colors */
  --status-success: #22c55e;
  --status-success-bg: rgba(34, 197, 94, 0.15);
  --status-warning: #f59e0b;
  --status-warning-bg: rgba(245, 158, 11, 0.15);
  --status-error: #ef4444;
  --status-error-bg: rgba(239, 68, 68, 0.15);
  --status-info: #38bdf8;
  --status-info-bg: rgba(56, 189, 248, 0.15);
}

/* Site Theme Enhanced Tokens (Monochrome dark) - Default */
[data-theme="site"],
:root:not([data-theme]) {
  /* Surface Colors */
  --surface-primary: #0a0a0a;
  --surface-secondary: #0f0f10;
  --surface-tertiary: #1a1a1a;
  --surface-elevated: #0f0f10;
  --surface-overlay: rgba(10, 10, 10, 0.95);
  --surface-disabled: #1a1a1a;

  /* Border Colors */
  --border-primary: #4b5563;
  --border-secondary: #6b7280;
  --border-tertiary: #9ca3af;
  --border-focus: #ffffff;
  --border-error: #ef4444;
  --border-success: #22c55e;
  --border-warning: #f59e0b;
  --border-disabled: #4b5563;

  /* Text Colors */
  --text-primary: #f5f5f5;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-quaternary: #6b7280;
  --text-disabled: #6b7280;
  --text-inverse: #0a0a0a;
  --text-link: #ffffff;
  --text-link-hover: #f5f5f5;

  /* Shadow System */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.3);

  /* Interactive States */
  --state-hover: rgba(255, 255, 255, 0.06);
  --state-active: rgba(255, 255, 255, 0.1);
  --state-focus: rgba(255, 255, 255, 0.15);
  --state-selected: rgba(255, 255, 255, 0.1);
  --state-disabled: rgba(255, 255, 255, 0.03);

  /* Status Colors */
  --status-success: #22c55e;
  --status-success-bg: rgba(34, 197, 94, 0.1);
  --status-warning: #f59e0b;
  --status-warning-bg: rgba(245, 158, 11, 0.1);
  --status-error: #ef4444;
  --status-error-bg: rgba(239, 68, 68, 0.1);
  --status-info: #38bdf8;
  --status-info-bg: rgba(56, 189, 248, 0.1);
}
/* =
==== UTILITY CLASSES ===== */

/* Spacing Utilities */
.p-0 { padding: var(--space-0) !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }
.p-8 { padding: var(--space-8) !important; }
.p-10 { padding: var(--space-10) !important; }
.p-12 { padding: var(--space-12) !important; }
.p-16 { padding: var(--space-16) !important; }
.p-20 { padding: var(--space-20) !important; }
.p-24 { padding: var(--space-24) !important; }

.m-0 { margin: var(--space-0) !important; }
.m-1 { margin: var(--space-1) !important; }
.m-2 { margin: var(--space-2) !important; }
.m-3 { margin: var(--space-3) !important; }
.m-4 { margin: var(--space-4) !important; }
.m-6 { margin: var(--space-6) !important; }
.m-8 { margin: var(--space-8) !important; }
.m-10 { margin: var(--space-10) !important; }
.m-12 { margin: var(--space-12) !important; }
.m-16 { margin: var(--space-16) !important; }
.m-20 { margin: var(--space-20) !important; }
.m-24 { margin: var(--space-24) !important; }

/* Directional Spacing */
.pt-4 { padding-top: var(--space-4) !important; }
.pt-8 { padding-top: var(--space-8) !important; }
.pt-12 { padding-top: var(--space-12) !important; }
.pt-16 { padding-top: var(--space-16) !important; }
.pt-24 { padding-top: var(--space-24) !important; }

.pb-4 { padding-bottom: var(--space-4) !important; }
.pb-8 { padding-bottom: var(--space-8) !important; }
.pb-12 { padding-bottom: var(--space-12) !important; }
.pb-16 { padding-bottom: var(--space-16) !important; }
.pb-24 { padding-bottom: var(--space-24) !important; }

.pl-4 { padding-left: var(--space-4) !important; }
.pl-8 { padding-left: var(--space-8) !important; }
.pl-12 { padding-left: var(--space-12) !important; }
.pl-16 { padding-left: var(--space-16) !important; }

.pr-4 { padding-right: var(--space-4) !important; }
.pr-8 { padding-right: var(--space-8) !important; }
.pr-12 { padding-right: var(--space-12) !important; }
.pr-16 { padding-right: var(--space-16) !important; }

.px-4 { padding-left: var(--space-4) !important; padding-right: var(--space-4) !important; }
.px-8 { padding-left: var(--space-8) !important; padding-right: var(--space-8) !important; }
.px-12 { padding-left: var(--space-12) !important; padding-right: var(--space-12) !important; }
.px-16 { padding-left: var(--space-16) !important; padding-right: var(--space-16) !important; }

.py-4 { padding-top: var(--space-4) !important; padding-bottom: var(--space-4) !important; }
.py-8 { padding-top: var(--space-8) !important; padding-bottom: var(--space-8) !important; }
.py-12 { padding-top: var(--space-12) !important; padding-bottom: var(--space-12) !important; }
.py-16 { padding-top: var(--space-16) !important; padding-bottom: var(--space-16) !important; }

/* Margin utilities */
.mt-4 { margin-top: var(--space-4) !important; }
.mt-8 { margin-top: var(--space-8) !important; }
.mt-12 { margin-top: var(--space-12) !important; }
.mt-16 { margin-top: var(--space-16) !important; }
.mt-24 { margin-top: var(--space-24) !important; }

.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }
.mb-12 { margin-bottom: var(--space-12) !important; }
.mb-16 { margin-bottom: var(--space-16) !important; }
.mb-24 { margin-bottom: var(--space-24) !important; }

.ml-4 { margin-left: var(--space-4) !important; }
.ml-8 { margin-left: var(--space-8) !important; }
.ml-12 { margin-left: var(--space-12) !important; }
.ml-16 { margin-left: var(--space-16) !important; }

.mr-4 { margin-right: var(--space-4) !important; }
.mr-8 { margin-right: var(--space-8) !important; }
.mr-12 { margin-right: var(--space-12) !important; }
.mr-16 { margin-right: var(--space-16) !important; }

.mx-4 { margin-left: var(--space-4) !important; margin-right: var(--space-4) !important; }
.mx-8 { margin-left: var(--space-8) !important; margin-right: var(--space-8) !important; }
.mx-12 { margin-left: var(--space-12) !important; margin-right: var(--space-12) !important; }
.mx-16 { margin-left: var(--space-16) !important; margin-right: var(--space-16) !important; }

.my-4 { margin-top: var(--space-4) !important; margin-bottom: var(--space-4) !important; }
.my-8 { margin-top: var(--space-8) !important; margin-bottom: var(--space-8) !important; }
.my-12 { margin-top: var(--space-12) !important; margin-bottom: var(--space-12) !important; }
.my-16 { margin-top: var(--space-16) !important; margin-bottom: var(--space-16) !important; }

/* Typography Utilities */
.text-xs { font-size: var(--font-size-xs) !important; }
.text-sm { font-size: var(--font-size-sm) !important; }
.text-base { font-size: var(--font-size-base) !important; }
.text-lg { font-size: var(--font-size-lg) !important; }
.text-xl { font-size: var(--font-size-xl) !important; }
.text-2xl { font-size: var(--font-size-2xl) !important; }
.text-3xl { font-size: var(--font-size-3xl) !important; }
.text-4xl { font-size: var(--font-size-4xl) !important; }

.font-thin { font-weight: var(--font-weight-thin) !important; }
.font-light { font-weight: var(--font-weight-light) !important; }
.font-normal { font-weight: var(--font-weight-normal) !important; }
.font-medium { font-weight: var(--font-weight-medium) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }

.leading-none { line-height: var(--line-height-none) !important; }
.leading-tight { line-height: var(--line-height-tight) !important; }
.leading-snug { line-height: var(--line-height-snug) !important; }
.leading-normal { line-height: var(--line-height-normal) !important; }
.leading-relaxed { line-height: var(--line-height-relaxed) !important; }
.leading-loose { line-height: var(--line-height-loose) !important; }

/* Border Radius Utilities */
.rounded-none { border-radius: var(--radius-none) !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded { border-radius: var(--radius-base) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-2xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Shadow Utilities */
.shadow-none { box-shadow: none !important; }
.shadow-xs { box-shadow: var(--shadow-xs) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-base) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }
.shadow-2xl { box-shadow: var(--shadow-2xl) !important; }
.shadow-inner { box-shadow: var(--shadow-inner) !important; }

/* Surface Utilities */
.surface-primary { background-color: var(--surface-primary) !important; }
.surface-secondary { background-color: var(--surface-secondary) !important; }
.surface-tertiary { background-color: var(--surface-tertiary) !important; }
.surface-elevated { background-color: var(--surface-elevated) !important; }

/* Border Utilities */
.border-primary { border-color: var(--border-primary) !important; }
.border-secondary { border-color: var(--border-secondary) !important; }
.border-tertiary { border-color: var(--border-tertiary) !important; }
.border-focus { border-color: var(--border-focus) !important; }

/* Text Color Utilities */
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }
.text-quaternary { color: var(--text-quaternary) !important; }
.text-disabled { color: var(--text-disabled) !important; }
.text-inverse { color: var(--text-inverse) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Ensure small text and form text have good contrast */
small { color: var(--text-secondary); }
.small { color: var(--text-secondary); }
.form-text { color: var(--text-secondary) !important; }

/* Status Utilities */
.text-success { color: var(--status-success) !important; }
.text-warning { color: var(--status-warning) !important; }
.text-error { color: var(--status-error) !important; }
.text-info { color: var(--status-info) !important; }

.bg-success { background-color: var(--status-success-bg) !important; }
.bg-warning { background-color: var(--status-warning-bg) !important; }
.bg-error { background-color: var(--status-error-bg) !important; }
.bg-info { background-color: var(--status-info-bg) !important; }

/* Transition Utilities */
.transition-none { transition: none !important; }
.transition-all { transition: all var(--duration-150) var(--ease-in-out) !important; }
.transition-colors { transition: color var(--duration-150) var(--ease-in-out), background-color var(--duration-150) var(--ease-in-out), border-color var(--duration-150) var(--ease-in-out) !important; }
.transition-opacity { transition: opacity var(--duration-150) var(--ease-in-out) !important; }
.transition-shadow { transition: box-shadow var(--duration-150) var(--ease-in-out) !important; }
.transition-transform { transition: transform var(--duration-150) var(--ease-in-out) !important; }

.duration-75 { transition-duration: var(--duration-75) !important; }
.duration-100 { transition-duration: var(--duration-100) !important; }
.duration-150 { transition-duration: var(--duration-150) !important; }
.duration-200 { transition-duration: var(--duration-200) !important; }
.duration-300 { transition-duration: var(--duration-300) !important; }

.ease-linear { transition-timing-function: var(--ease-linear) !important; }
.ease-in { transition-timing-function: var(--ease-in) !important; }
.ease-out { transition-timing-function: var(--ease-out) !important; }
.ease-in-out { transition-timing-function: var(--ease-in-out) !important; }

/* Interactive State Utilities */
.hover\:shadow-md:hover { box-shadow: var(--shadow-md) !important; }
.hover\:shadow-lg:hover { box-shadow: var(--shadow-lg) !important; }
.hover\:transform:hover { transform: translateY(-2px) !important; }
.hover\:scale-105:hover { transform: scale(1.05) !important; }

.focus\:ring { box-shadow: 0 0 0 3px var(--state-focus) !important; }
.focus\:ring-2 { box-shadow: 0 0 0 2px var(--state-focus) !important; }

/* Layout Utilities */
.container-modern {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container-modern {
    max-width: 640px;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 768px) {
  .container-modern {
    max-width: 768px;
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container-modern {
    max-width: 1024px;
  }
}

@media (min-width: 1280px) {
  .container-modern {
    max-width: 1280px;
  }
}

@media (min-width: 1536px) {
  .container-modern {
    max-width: 1536px;
  }
}

/* Grid System */
.grid {
  display: grid;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-5 { grid-column: span 5 / span 5; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-full { grid-column: 1 / -1; }

.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-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* Position Utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.z-0 { z-index: var(--z-0); }
.z-10 { z-index: var(--z-10); }
.z-20 { z-index: var(--z-20); }
.z-30 { z-index: var(--z-30); }
.z-40 { z-index: var(--z-40); }
.z-50 { z-index: var(--z-50); }

/* Display Utilities */
.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none; }

/* Overflow Utilities */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-hidden { overflow-y: hidden; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }

/* Width and Height Utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }
.w-1\/2 { width: 50%; }
.w-1\/3 { width: 33.333333%; }
.w-2\/3 { width: 66.666667%; }
.w-1\/4 { width: 25%; }
.w-3\/4 { width: 75%; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-fit { height: fit-content; }
.h-screen { height: 100vh; }

.min-h-0 { min-height: 0; }
.min-h-full { min-height: 100%; }
.min-h-screen { min-height: 100vh; }

.max-w-none { max-width: none; }
.max-w-xs { max-width: 20rem; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-7xl { max-width: 80rem; }
.max-w-full { max-width: 100%; }/* ==
=== RESPONSIVE UTILITIES ===== */

/* Small screens and up (640px+) */
@media (min-width: 640px) {
  .sm\:block { display: block !important; }
  .sm\:hidden { display: none !important; }
  .sm\:flex { display: flex !important; }
  .sm\:grid { display: grid !important; }
  
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  
  .sm\:col-span-1 { grid-column: span 1 / span 1 !important; }
  .sm\:col-span-2 { grid-column: span 2 / span 2 !important; }
  .sm\:col-span-3 { grid-column: span 3 / span 3 !important; }
  .sm\:col-span-4 { grid-column: span 4 / span 4 !important; }
  
  .sm\:gap-4 { gap: var(--space-4) !important; }
  .sm\:gap-6 { gap: var(--space-6) !important; }
  .sm\:gap-8 { gap: var(--space-8) !important; }
  
  .sm\:p-4 { padding: var(--space-4) !important; }
  .sm\:p-6 { padding: var(--space-6) !important; }
  .sm\:p-8 { padding: var(--space-8) !important; }
  
  .sm\:px-6 { padding-left: var(--space-6) !important; padding-right: var(--space-6) !important; }
  .sm\:py-6 { padding-top: var(--space-6) !important; padding-bottom: var(--space-6) !important; }
  
  .sm\:text-sm { font-size: var(--font-size-sm) !important; }
  .sm\:text-base { font-size: var(--font-size-base) !important; }
  .sm\:text-lg { font-size: var(--font-size-lg) !important; }
  .sm\:text-xl { font-size: var(--font-size-xl) !important; }
  .sm\:text-2xl { font-size: var(--font-size-2xl) !important; }
}

/* Medium screens and up (768px+) */
@media (min-width: 768px) {
  .md\:block { display: block !important; }
  .md\:hidden { display: none !important; }
  .md\:flex { display: flex !important; }
  .md\:grid { display: grid !important; }
  
  .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .md\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .md\:col-span-1 { grid-column: span 1 / span 1 !important; }
  .md\:col-span-2 { grid-column: span 2 / span 2 !important; }
  .md\:col-span-3 { grid-column: span 3 / span 3 !important; }
  .md\:col-span-4 { grid-column: span 4 / span 4 !important; }
  .md\:col-span-6 { grid-column: span 6 / span 6 !important; }
  
  .md\:gap-6 { gap: var(--space-6) !important; }
  .md\:gap-8 { gap: var(--space-8) !important; }
  .md\:gap-12 { gap: var(--space-12) !important; }
  
  .md\:p-6 { padding: var(--space-6) !important; }
  .md\:p-8 { padding: var(--space-8) !important; }
  .md\:p-12 { padding: var(--space-12) !important; }
  
  .md\:px-8 { padding-left: var(--space-8) !important; padding-right: var(--space-8) !important; }
  .md\:py-8 { padding-top: var(--space-8) !important; padding-bottom: var(--space-8) !important; }
  
  .md\:text-base { font-size: var(--font-size-base) !important; }
  .md\:text-lg { font-size: var(--font-size-lg) !important; }
  .md\:text-xl { font-size: var(--font-size-xl) !important; }
  .md\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .md\:text-3xl { font-size: var(--font-size-3xl) !important; }
  
  .md\:flex-row { flex-direction: row !important; }
  .md\:flex-col { flex-direction: column !important; }
  
  .md\:w-1\/2 { width: 50% !important; }
  .md\:w-1\/3 { width: 33.333333% !important; }
  .md\:w-2\/3 { width: 66.666667% !important; }
  .md\:w-1\/4 { width: 25% !important; }
  .md\:w-3\/4 { width: 75% !important; }
  .md\:w-full { width: 100% !important; }
}

/* Large screens and up (1024px+) */
@media (min-width: 1024px) {
  .lg\:block { display: block !important; }
  .lg\:hidden { display: none !important; }
  .lg\:flex { display: flex !important; }
  .lg\:grid { display: grid !important; }
  
  .lg\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .lg\:col-span-1 { grid-column: span 1 / span 1 !important; }
  .lg\:col-span-2 { grid-column: span 2 / span 2 !important; }
  .lg\:col-span-3 { grid-column: span 3 / span 3 !important; }
  .lg\:col-span-4 { grid-column: span 4 / span 4 !important; }
  .lg\:col-span-5 { grid-column: span 5 / span 5 !important; }
  .lg\:col-span-6 { grid-column: span 6 / span 6 !important; }
  
  .lg\:gap-8 { gap: var(--space-8) !important; }
  .lg\:gap-12 { gap: var(--space-12) !important; }
  .lg\:gap-16 { gap: var(--space-16) !important; }
  
  .lg\:p-8 { padding: var(--space-8) !important; }
  .lg\:p-12 { padding: var(--space-12) !important; }
  .lg\:p-16 { padding: var(--space-16) !important; }
  
  .lg\:px-12 { padding-left: var(--space-12) !important; padding-right: var(--space-12) !important; }
  .lg\:py-12 { padding-top: var(--space-12) !important; padding-bottom: var(--space-12) !important; }
  
  .lg\:text-lg { font-size: var(--font-size-lg) !important; }
  .lg\:text-xl { font-size: var(--font-size-xl) !important; }
  .lg\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .lg\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .lg\:text-4xl { font-size: var(--font-size-4xl) !important; }
  
  .lg\:w-1\/3 { width: 33.333333% !important; }
  .lg\:w-2\/3 { width: 66.666667% !important; }
  .lg\:w-1\/4 { width: 25% !important; }
  .lg\:w-3\/4 { width: 75% !important; }
  .lg\:w-1\/5 { width: 20% !important; }
  .lg\:w-2\/5 { width: 40% !important; }
  .lg\:w-3\/5 { width: 60% !important; }
  .lg\:w-4\/5 { width: 80% !important; }
}

/* Extra large screens and up (1280px+) */
@media (min-width: 1280px) {
  .xl\:block { display: block !important; }
  .xl\:hidden { display: none !important; }
  .xl\:flex { display: flex !important; }
  .xl\:grid { display: grid !important; }
  
  .xl\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .xl\:gap-8 { gap: var(--space-8) !important; }
  .xl\:gap-12 { gap: var(--space-12) !important; }
  .xl\:gap-16 { gap: var(--space-16) !important; }
  
  .xl\:p-12 { padding: var(--space-12) !important; }
  .xl\:p-16 { padding: var(--space-16) !important; }
  
  .xl\:text-xl { font-size: var(--font-size-xl) !important; }
  .xl\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .xl\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .xl\:text-4xl { font-size: var(--font-size-4xl) !important; }
  .xl\:text-5xl { font-size: var(--font-size-5xl) !important; }
}

/* ===== MOBILE-FIRST RESPONSIVE DESIGN SYSTEM ===== */

/* Touch-optimized interactive elements */
.touch-target {
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile-specific utilities */
@media (max-width: 767px) {
  /* Mobile display utilities */
  .mobile\:block { display: block !important; }
  .mobile\:hidden { display: none !important; }
  .mobile\:flex { display: flex !important; }
  .mobile\:grid { display: grid !important; }
  
  /* Mobile grid system */
  .mobile\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .mobile\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  
  /* Mobile spacing */
  .mobile\:p-2 { padding: var(--space-2) !important; }
  .mobile\:p-3 { padding: var(--space-3) !important; }
  .mobile\:p-4 { padding: var(--space-4) !important; }
  .mobile\:px-3 { padding-left: var(--space-3) !important; padding-right: var(--space-3) !important; }
  .mobile\:py-3 { padding-top: var(--space-3) !important; padding-bottom: var(--space-3) !important; }
  
  .mobile\:m-2 { margin: var(--space-2) !important; }
  .mobile\:m-3 { margin: var(--space-3) !important; }
  .mobile\:mb-4 { margin-bottom: var(--space-4) !important; }
  .mobile\:mt-4 { margin-top: var(--space-4) !important; }
  
  /* Mobile gap utilities */
  .mobile\:gap-2 { gap: var(--space-2) !important; }
  .mobile\:gap-3 { gap: var(--space-3) !important; }
  .mobile\:gap-4 { gap: var(--space-4) !important; }
  
  /* Mobile typography */
  .mobile\:text-sm { font-size: var(--font-size-sm) !important; }
  .mobile\:text-base { font-size: var(--font-size-base) !important; }
  .mobile\:text-lg { font-size: var(--font-size-lg) !important; }
  
  /* Mobile flexbox */
  .mobile\:flex-col { flex-direction: column !important; }
  .mobile\:flex-row { flex-direction: row !important; }
  .mobile\:items-center { align-items: center !important; }
  .mobile\:justify-center { justify-content: center !important; }
  .mobile\:justify-between { justify-content: space-between !important; }
  
  /* Mobile width utilities */
  .mobile\:w-full { width: 100% !important; }
  .mobile\:w-auto { width: auto !important; }
  
  /* Mobile positioning */
  .mobile\:relative { position: relative !important; }
  .mobile\:absolute { position: absolute !important; }
  .mobile\:fixed { position: fixed !important; }
  
  /* Mobile overflow */
  .mobile\:overflow-hidden { overflow: hidden !important; }
  .mobile\:overflow-x-auto { overflow-x: auto !important; }
  .mobile\:overflow-y-auto { overflow-y: auto !important; }
}

/* Tablet-specific utilities */
@media (min-width: 768px) and (max-width: 1023px) {
  .tablet\:block { display: block !important; }
  .tablet\:hidden { display: none !important; }
  .tablet\:flex { display: flex !important; }
  .tablet\:grid { display: grid !important; }
  
  .tablet\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .tablet\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .tablet\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  
  .tablet\:gap-4 { gap: var(--space-4) !important; }
  .tablet\:gap-6 { gap: var(--space-6) !important; }
  .tablet\:gap-8 { gap: var(--space-8) !important; }
  
  .tablet\:p-4 { padding: var(--space-4) !important; }
  .tablet\:p-6 { padding: var(--space-6) !important; }
  .tablet\:px-6 { padding-left: var(--space-6) !important; padding-right: var(--space-6) !important; }
  .tablet\:py-6 { padding-top: var(--space-6) !important; padding-bottom: var(--space-6) !important; }
  
  .tablet\:text-base { font-size: var(--font-size-base) !important; }
  .tablet\:text-lg { font-size: var(--font-size-lg) !important; }
  .tablet\:text-xl { font-size: var(--font-size-xl) !important; }
}

/* Desktop-specific utilities */
@media (min-width: 1024px) {
  .desktop\:block { display: block !important; }
  .desktop\:hidden { display: none !important; }
  .desktop\:flex { display: flex !important; }
  .desktop\:grid { display: grid !important; }
  
  .desktop\:hover\:shadow-md:hover { box-shadow: var(--shadow-md) !important; }
  .desktop\:hover\:shadow-lg:hover { box-shadow: var(--shadow-lg) !important; }
  .desktop\:hover\:transform:hover { transform: translateY(-2px) !important; }
  .desktop\:hover\:scale-105:hover { transform: scale(1.05) !important; }
  
  .desktop\:cursor-pointer { cursor: pointer !important; }
  .desktop\:cursor-default { cursor: default !important; }
  
  /* Desktop grid layouts */
  .desktop\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .desktop\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .desktop\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .desktop\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .desktop\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .desktop\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  /* Desktop spacing */
  .desktop\:gap-6 { gap: var(--space-6) !important; }
  .desktop\:gap-8 { gap: var(--space-8) !important; }
  .desktop\:gap-12 { gap: var(--space-12) !important; }
  .desktop\:gap-16 { gap: var(--space-16) !important; }
  
  .desktop\:p-6 { padding: var(--space-6) !important; }
  .desktop\:p-8 { padding: var(--space-8) !important; }
  .desktop\:p-12 { padding: var(--space-12) !important; }
  
  .desktop\:px-8 { padding-left: var(--space-8) !important; padding-right: var(--space-8) !important; }
  .desktop\:py-8 { padding-top: var(--space-8) !important; padding-bottom: var(--space-8) !important; }
  
  /* Desktop typography */
  .desktop\:text-lg { font-size: var(--font-size-lg) !important; }
  .desktop\:text-xl { font-size: var(--font-size-xl) !important; }
  .desktop\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .desktop\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .desktop\:text-4xl { font-size: var(--font-size-4xl) !important; }
}

/* ===== DESKTOP ADAPTIVE LAYOUTS ===== */

/* Desktop-optimized container system */
@media (min-width: 1024px) {
  .container-adaptive {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-8);
  }
  
  .container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-8);
  }
  
  .container-full {
    width: 100%;
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1280px) {
  .container-adaptive {
    max-width: 1280px;
    padding: 0 var(--space-12);
  }
  
  .container-wide {
    max-width: 1600px;
    padding: 0 var(--space-12);
  }
  
  .container-full {
    padding: 0 var(--space-12);
  }
}

@media (min-width: 1536px) {
  .container-adaptive {
    max-width: 1400px;
    padding: 0 var(--space-16);
  }
  
  .container-wide {
    max-width: 1800px;
    padding: 0 var(--space-16);
  }
  
  .container-full {
    padding: 0 var(--space-16);
  }
}

/* Desktop hover states and interactions */
@media (min-width: 1024px) {
  .card-modern {
    transition: all var(--duration-200) var(--ease-out);
  }
  
  .card-modern:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
  }
  
  .card-modern.card-interactive:hover {
    border-color: var(--border-focus);
    cursor: pointer;
  }
  
  /* Enhanced button hover states */
  .btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
  }
  
  .btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
  }
  
  /* Navigation hover effects */
  .nav-item:hover {
    background-color: var(--state-hover);
    transform: translateX(4px);
  }
  
  .nav-item:hover .nav-item-icon {
    color: var(--text-primary);
    transform: scale(1.1);
  }
  
  /* Table row hover effects */
  .table tbody tr:hover {
    background-color: var(--state-hover);
    cursor: pointer;
  }
  
  /* Form control hover effects */
  .form-control:hover {
    border-color: var(--border-secondary);
  }
  
  .form-control:focus {
    transform: scale(1.02);
  }
}

/* Desktop-specific layout patterns */
@media (min-width: 1024px) {
  /* Masonry-style grid for cards */
  .grid-masonry {
    columns: 3;
    column-gap: var(--space-6);
    break-inside: avoid;
  }
  
  .grid-masonry .card-modern {
    break-inside: avoid;
    margin-bottom: var(--space-6);
  }
  
  /* Dashboard layout optimization */
  .dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-8);
    align-items: start;
  }
  
  .dashboard-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }
  
  .dashboard-sidebar {
    position: sticky;
    top: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
  }
  
  /* Content with sidebar layout */
  .content-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-8);
    align-items: start;
  }
  
  .content-sidebar {
    position: sticky;
    top: var(--space-8);
  }
  
  /* Three-column layout */
  .three-column-layout {
    display: grid;
    grid-template-columns: 250px 1fr 300px;
    gap: var(--space-8);
    align-items: start;
  }
  
  .three-column-left,
  .three-column-right {
    position: sticky;
    top: var(--space-8);
  }
}

@media (min-width: 1280px) {
  .grid-masonry {
    columns: 4;
  }
  
  .dashboard-grid {
    grid-template-columns: 3fr 1fr;
  }
  
  .content-with-sidebar {
    grid-template-columns: 1fr 350px;
  }
  
  .three-column-layout {
    grid-template-columns: 300px 1fr 350px;
  }
}

@media (min-width: 1536px) {
  .grid-masonry {
    columns: 5;
    column-gap: var(--space-8);
  }
  
  .dashboard-grid {
    gap: var(--space-12);
  }
  
  .content-with-sidebar {
    gap: var(--space-12);
  }
  
  .three-column-layout {
    gap: var(--space-12);
  }
}

/* Desktop keyboard navigation enhancements */
@media (min-width: 1024px) {
  /* Focus indicators for keyboard navigation */
  .nav-item:focus,
  .card-interactive:focus,
  .btn:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--state-focus);
  }
  
  /* Skip links for accessibility */
  .skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--surface-elevated);
    color: var(--text-primary);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-base);
    z-index: 1000;
    transition: top var(--duration-200) var(--ease-out);
  }
  
  .skip-link:focus {
    top: 6px;
  }
}

/* Desktop tooltip system */
@media (min-width: 1024px) {
  .tooltip-container {
    position: relative;
    display: inline-block;
  }
  
  .tooltip-content {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--surface-elevated);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-primary);
    z-index: var(--z-50);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-200) var(--ease-out);
    margin-bottom: var(--space-2);
  }
  
  .tooltip-content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--surface-elevated);
  }
  
  .tooltip-container:hover .tooltip-content,
  .tooltip-container:focus .tooltip-content {
    opacity: 1;
    visibility: visible;
  }
}

/* Desktop context menu system */
@media (min-width: 1024px) {
  .context-menu {
    position: fixed;
    background-color: var(--surface-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    z-index: var(--z-50);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: all var(--duration-150) var(--ease-out);
  }
  
  .context-menu.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
  }
  
  .context-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--duration-150) var(--ease-out);
    white-space: nowrap;
  }
  
  .context-menu-item:hover {
    background-color: var(--state-hover);
    color: var(--text-primary);
  }
  
  .context-menu-divider {
    height: 1px;
    background-color: var(--border-primary);
    margin: var(--space-2) 0;
  }
}

/* Desktop drag and drop support */
@media (min-width: 1024px) {
  .draggable {
    cursor: grab;
    transition: all var(--duration-150) var(--ease-out);
  }
  
  .draggable:active {
    cursor: grabbing;
  }
  
  .draggable.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
    z-index: var(--z-40);
  }
  
  .drop-zone {
    border: 2px dashed var(--border-tertiary);
    border-radius: var(--radius-base);
    padding: var(--space-8);
    text-align: center;
    color: var(--text-tertiary);
    transition: all var(--duration-200) var(--ease-out);
  }
  
  .drop-zone.drag-over {
    border-color: var(--border-focus);
    background-color: var(--state-focus);
    color: var(--text-primary);
  }
  
  .drop-zone.drop-valid {
    border-color: var(--status-success);
    background-color: var(--status-success-bg);
  }
  
  .drop-zone.drop-invalid {
    border-color: var(--status-error);
    background-color: var(--status-error-bg);
  }
}

/* ===== MOBILE NAVIGATION PATTERNS ===== */

/* Mobile navigation drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--surface-elevated);
  z-index: var(--z-50);
  transform: translateX(-100%);
  transition: transform var(--duration-300) var(--ease-out);
  display: flex;
  flex-direction: column;
}

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

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-primary);
  background-color: var(--surface-secondary);
  min-height: 4rem;
}

.mobile-nav-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: var(--font-size-xl);
  padding: var(--space-3);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--duration-150) var(--ease-out);
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-close:hover {
  background-color: var(--state-hover);
  color: var(--text-primary);
}

.mobile-nav-content {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Mobile navigation items with touch optimization */
.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-base);
  transition: all var(--duration-150) var(--ease-out);
  margin-bottom: var(--space-2);
  min-height: 44px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
}

.mobile-nav-item:hover,
.mobile-nav-item:focus {
  background-color: var(--state-hover);
  color: var(--text-primary);
  text-decoration: none;
}

.mobile-nav-item.active {
  background-color: var(--state-selected);
  color: var(--text-primary);
}

.mobile-nav-item-icon {
  font-size: var(--font-size-lg);
  width: 1.5rem;
  text-align: center;
  flex-shrink: 0;
}

/* Touch-optimized buttons */
.btn-touch {
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  border-radius: var(--radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: all var(--duration-150) var(--ease-out);
}

/* Mobile-optimized form controls */
.form-control-mobile {
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  border-radius: var(--radius-base);
  border: 1px solid var(--border-primary);
  background-color: var(--surface-primary);
  color: var(--text-primary);
  transition: all var(--duration-150) var(--ease-out);
}

.form-control-mobile:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--state-focus);
}

/* Mobile card optimizations */
@media (max-width: 767px) {
  .card-modern {
    margin-bottom: var(--space-4);
    border-radius: var(--radius-base);
  }
  
  .card-modern .card-body {
    padding: var(--space-4);
  }
  
  .card-modern .card-header {
    padding: var(--space-3) var(--space-4);
  }
  
  .card-modern .card-footer {
    padding: var(--space-3) var(--space-4);
  }
  
  /* Stack card actions vertically on mobile */
  .card-actions {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .card-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Mobile table responsiveness */
@media (max-width: 767px) {
  .table-responsive-mobile {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .table-mobile-stack {
    display: block;
  }
  
  .table-mobile-stack thead {
    display: none;
  }
  
  .table-mobile-stack tbody,
  .table-mobile-stack tr,
  .table-mobile-stack td {
    display: block;
    width: 100%;
  }
  
  .table-mobile-stack tr {
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-base);
    margin-bottom: var(--space-4);
    padding: var(--space-4);
    background-color: var(--surface-primary);
  }
  
  .table-mobile-stack td {
    border: none;
    padding: var(--space-2) 0;
    position: relative;
    padding-left: 40%;
  }
  
  .table-mobile-stack td:before {
    content: attr(data-label);
    position: absolute;
    left: 0;
    width: 35%;
    padding-right: var(--space-2);
    white-space: nowrap;
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
  }
}

/* Mobile breadcrumb optimization */
@media (max-width: 767px) {
  .breadcrumb-modern {
    padding: var(--space-3);
    margin-bottom: var(--space-4);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .breadcrumb-container {
    padding: 0 var(--space-2);
    white-space: nowrap;
  }
  
  .breadcrumb-actions {
    display: none; /* Hide actions on mobile to save space */
  }
}

/* Mobile modal optimizations */
@media (max-width: 767px) {
  .modal-dialog {
    margin: var(--space-4);
    max-width: calc(100vw - 2rem);
  }
  
  .modal-content {
    border-radius: var(--radius-base);
  }
  
  .modal-header {
    padding: var(--space-4);
  }
  
  .modal-body {
    padding: var(--space-4);
  }
  
  .modal-footer {
    padding: var(--space-4);
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .modal-footer .btn {
    width: 100%;
    order: 2;
  }
  
  .modal-footer .btn-primary {
    order: 1;
  }
}

/* Swipe gesture support */
.swipe-container {
  touch-action: pan-y;
  -webkit-user-select: none;
  user-select: none;
}

.swipe-item {
  position: relative;
  transition: transform var(--duration-200) var(--ease-out);
}

.swipe-item.swiping {
  transition: none;
}

.swipe-actions {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  display: flex;
  align-items: center;
  background-color: var(--status-error);
  color: var(--text-inverse);
  padding: 0 var(--space-4);
  border-radius: 0 var(--radius-base) var(--radius-base) 0;
  transform: translateX(100%);
  transition: transform var(--duration-200) var(--ease-out);
}

.swipe-item.revealed .swipe-actions {
  transform: translateX(0);
}

/* Mobile-specific animations */
@media (max-width: 767px) {
  @keyframes slideInFromRight {
    from {
      transform: translateX(100%);
      opacity: 0;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }
  
  @keyframes slideInFromLeft {
    from {
      transform: translateX(-100%);
      opacity: 0;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }
  
  @keyframes slideInFromBottom {
    from {
      transform: translateY(100%);
      opacity: 0;
    }
    to {
      transform: translateY(0);
      opacity: 1;
    }
  }
  
  .animate-slide-in-right {
    animation: slideInFromRight var(--duration-300) var(--ease-out);
  }
  
  .animate-slide-in-left {
    animation: slideInFromLeft var(--duration-300) var(--ease-out);
  }
  
  .animate-slide-in-bottom {
    animation: slideInFromBottom var(--duration-300) var(--ease-out);
  }
} {
  .xl\:block { display: block !important; }
  .xl\:hidden { display: none !important; }
  .xl\:flex { display: flex !important; }
  .xl\:grid { display: grid !important; }
  
  .xl\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .xl\:col-span-1 { grid-column: span 1 / span 1 !important; }
  .xl\:col-span-2 { grid-column: span 2 / span 2 !important; }
  .xl\:col-span-3 { grid-column: span 3 / span 3 !important; }
  .xl\:col-span-4 { grid-column: span 4 / span 4 !important; }
  .xl\:col-span-5 { grid-column: span 5 / span 5 !important; }
  .xl\:col-span-6 { grid-column: span 6 / span 6 !important; }
  
  .xl\:gap-12 { gap: var(--space-12) !important; }
  .xl\:gap-16 { gap: var(--space-16) !important; }
  .xl\:gap-20 { gap: var(--space-20) !important; }
  
  .xl\:p-12 { padding: var(--space-12) !important; }
  .xl\:p-16 { padding: var(--space-16) !important; }
  .xl\:p-20 { padding: var(--space-20) !important; }
  
  .xl\:px-16 { padding-left: var(--space-16) !important; padding-right: var(--space-16) !important; }
  .xl\:py-16 { padding-top: var(--space-16) !important; padding-bottom: var(--space-16) !important; }
  
  .xl\:text-xl { font-size: var(--font-size-xl) !important; }
  .xl\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .xl\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .xl\:text-4xl { font-size: var(--font-size-4xl) !important; }
  .xl\:text-5xl { font-size: var(--font-size-5xl) !important; }
  
  .xl\:w-1\/5 { width: 20% !important; }
  .xl\:w-2\/5 { width: 40% !important; }
  .xl\:w-3\/5 { width: 60% !important; }
  .xl\:w-4\/5 { width: 80% !important; }
  .xl\:w-1\/6 { width: 16.666667% !important; }
  .xl\:w-5\/6 { width: 83.333333% !important; }
}

/* ===== ENHANCED LAYOUT UTILITIES ===== */

/* Advanced Grid System */
.grid-auto-fit { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-auto-fill { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

.grid-auto-fit-sm { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-auto-fit-lg { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.grid-rows-1 { grid-template-rows: repeat(1, minmax(0, 1fr)); }
.grid-rows-2 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.grid-rows-3 { grid-template-rows: repeat(3, minmax(0, 1fr)); }
.grid-rows-4 { grid-template-rows: repeat(4, minmax(0, 1fr)); }
.grid-rows-5 { grid-template-rows: repeat(5, minmax(0, 1fr)); }
.grid-rows-6 { grid-template-rows: repeat(6, minmax(0, 1fr)); }

.row-span-1 { grid-row: span 1 / span 1; }
.row-span-2 { grid-row: span 2 / span 2; }
.row-span-3 { grid-row: span 3 / span 3; }
.row-span-4 { grid-row: span 4 / span 4; }
.row-span-5 { grid-row: span 5 / span 5; }
.row-span-6 { grid-row: span 6 / span 6; }
.row-span-full { grid-row: 1 / -1; }

.grid-flow-row { grid-auto-flow: row; }
.grid-flow-col { grid-auto-flow: column; }
.grid-flow-dense { grid-auto-flow: dense; }
.grid-flow-row-dense { grid-auto-flow: row dense; }
.grid-flow-col-dense { grid-auto-flow: column dense; }

/* Enhanced Container System */
.container-fluid-modern {
  width: 100%;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  margin-left: auto;
  margin-right: auto;
}

.container-narrow {
  max-width: 42rem; /* 672px */
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-wide {
  max-width: 90rem; /* 1440px */
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Responsive container adjustments */
@media (min-width: 640px) {
  .container-fluid-modern,
  .container-narrow,
  .container-wide {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 768px) {
  .container-fluid-modern,
  .container-narrow,
  .container-wide {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container-fluid-modern,
  .container-narrow,
  .container-wide {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

/* Advanced Flexbox Utilities */
.flex-initial { flex: 0 1 auto; }
.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

.flex-grow { flex-grow: 1; }
.flex-grow-0 { flex-grow: 0; }
.flex-shrink { flex-shrink: 1; }
.flex-shrink-0 { flex-shrink: 0; }

.order-1 { order: 1; }
.order-2 { order: 2; }
.order-3 { order: 3; }
.order-4 { order: 4; }
.order-5 { order: 5; }
.order-6 { order: 6; }
.order-first { order: -9999; }
.order-last { order: 9999; }
.order-none { order: 0; }

/* Content alignment */
.content-center { align-content: center; }
.content-start { align-content: flex-start; }
.content-end { align-content: flex-end; }
.content-between { align-content: space-between; }
.content-around { align-content: space-around; }
.content-evenly { align-content: space-evenly; }

.self-auto { align-self: auto; }
.self-start { align-self: flex-start; }
.self-end { align-self: flex-end; }
.self-center { align-self: center; }
.self-stretch { align-self: stretch; }
.self-baseline { align-self: baseline; }

/* Place utilities for grid */
.place-content-center { place-content: center; }
.place-content-start { place-content: start; }
.place-content-end { place-content: end; }
.place-content-between { place-content: space-between; }
.place-content-around { place-content: space-around; }
.place-content-evenly { place-content: space-evenly; }
.place-content-stretch { place-content: stretch; }

.place-items-start { place-items: start; }
.place-items-end { place-items: end; }
.place-items-center { place-items: center; }
.place-items-stretch { place-items: stretch; }

.place-self-auto { place-self: auto; }
.place-self-start { place-self: start; }
.place-self-end { place-self: end; }
.place-self-center { place-self: center; }
.place-self-stretch { place-self: stretch; }

/* Justify utilities */
.justify-items-start { justify-items: start; }
.justify-items-end { justify-items: end; }
.justify-items-center { justify-items: center; }
.justify-items-stretch { justify-items: stretch; }

.justify-self-auto { justify-self: auto; }
.justify-self-start { justify-self: start; }
.justify-self-end { justify-self: end; }
.justify-self-center { justify-self: center; }
.justify-self-stretch { justify-self: stretch; }

/* Layout composition utilities */
.stack {
  display: flex;
  flex-direction: column;
}

.stack > * + * {
  margin-top: var(--space-4);
}

.stack-sm > * + * {
  margin-top: var(--space-2);
}

.stack-lg > * + * {
  margin-top: var(--space-8);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: flex-start;
  align-items: center;
}

.cluster-center {
  justify-content: center;
}

.cluster-end {
  justify-content: flex-end;
}

.cluster-between {
  justify-content: space-between;
}

.sidebar-layout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-6);
  align-items: start;
}

.sidebar-layout.sidebar-right {
  grid-template-columns: 1fr auto;
}

.sidebar-layout > :first-child {
  min-width: 0;
}

.sidebar-layout > :last-child {
  min-width: 0;
}

/* Responsive sidebar layout */
@media (max-width: 768px) {
  .sidebar-layout,
  .sidebar-layout.sidebar-right {
    grid-template-columns: 1fr;
  }
}

/* Center layout utility */
.center {
  box-sizing: content-box;
  margin-left: auto;
  margin-right: auto;
  max-width: var(--measure, 65ch);
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Cover layout utility */
.cover {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: var(--space-4);
}

.cover > * {
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.cover > :first-child:not(.cover-centered) {
  margin-top: 0;
}

.cover > :last-child:not(.cover-centered) {
  margin-bottom: 0;
}

.cover > .cover-centered {
  margin-top: auto;
  margin-bottom: auto;
}

/* Switcher layout utility */
.switcher {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.switcher > * {
  flex-grow: 1;
  flex-basis: calc((var(--switcher-threshold, 30rem) - 100%) * 999);
}

.switcher > :nth-last-child(n+4),
.switcher > :nth-last-child(n+4) ~ * {
  flex-basis: 100%;
}

/* Aspect ratio utilities */
.aspect-square { aspect-ratio: 1 / 1; }
.aspect-video { aspect-ratio: 16 / 9; }
.aspect-photo { aspect-ratio: 4 / 3; }
.aspect-golden { aspect-ratio: 1.618 / 1; }

/* Object fit utilities */
.object-contain { object-fit: contain; }
.object-cover { object-fit: cover; }
.object-fill { object-fit: fill; }
.object-none { object-fit: none; }
.object-scale-down { object-fit: scale-down; }

.object-bottom { object-position: bottom; }
.object-center { object-position: center; }
.object-left { object-position: left; }
.object-left-bottom { object-position: left bottom; }
.object-left-top { object-position: left top; }
.object-right { object-position: right; }
.object-right-bottom { object-position: right bottom; }
.object-right-top { object-position: right top; }
.object-top { object-position: top; }

/* Responsive layout utilities */
@media (max-width: 640px) {
  .sm-stack {
    display: flex;
    flex-direction: column;
  }
  
  .sm-stack > * + * {
    margin-top: var(--space-4);
  }
  
  .sm-full-width {
    width: 100% !important;
  }
}

@media (max-width: 768px) {
  .md-stack {
    display: flex;
    flex-direction: column;
  }
  
  .md-stack > * + * {
    margin-top: var(--space-4);
  }
  
  .md-full-width {
    width: 100% !important;
  }
}

/* Print utilities */
@media print {
  .print-hidden { display: none !important; }
  .print-visible { display: block !important; }
} {
  .xl\:block { display: block !important; }
  .xl\:hidden { display: none !important; }
  .xl\:flex { display: flex !important; }
  .xl\:grid { display: grid !important; }
  
  .xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .xl\:gap-12 { gap: var(--space-12) !important; }
  .xl\:gap-16 { gap: var(--space-16) !important; }
  .xl\:gap-20 { gap: var(--space-20) !important; }
  
  .xl\:p-12 { padding: var(--space-12) !important; }
  .xl\:p-16 { padding: var(--space-16) !important; }
  .xl\:p-20 { padding: var(--space-20) !important; }
  
  .xl\:text-xl { font-size: var(--font-size-xl) !important; }
  .xl\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .xl\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .xl\:text-4xl { font-size: var(--font-size-4xl) !important; }
  .xl\:text-5xl { font-size: var(--font-size-5xl) !important; }
}

/* 2XL screens and up (1536px+) */
@media (min-width: 1536px) {
  .2xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .2xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .2xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
  .2xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)) !important; }
  
  .2xl\:gap-16 { gap: var(--space-16) !important; }
  .2xl\:gap-20 { gap: var(--space-20) !important; }
  .2xl\:gap-24 { gap: var(--space-24) !important; }
  
  .2xl\:p-16 { padding: var(--space-16) !important; }
  .2xl\:p-20 { padding: var(--space-20) !important; }
  .2xl\:p-24 { padding: var(--space-24) !important; }
  
  .2xl\:text-2xl { font-size: var(--font-size-2xl) !important; }
  .2xl\:text-3xl { font-size: var(--font-size-3xl) !important; }
  .2xl\:text-4xl { font-size: var(--font-size-4xl) !important; }
  .2xl\:text-5xl { font-size: var(--font-size-5xl) !important; }
  .2xl\:text-6xl { font-size: var(--font-size-6xl) !important; }
}

/* Mobile-first responsive utilities */
@media (max-width: 639px) {
  .mobile\:hidden { display: none !important; }
  .mobile\:block { display: block !important; }
  .mobile\:flex { display: flex !important; }
  .mobile\:flex-col { flex-direction: column !important; }
  .mobile\:text-center { text-align: center !important; }
  .mobile\:p-4 { padding: var(--space-4) !important; }
  .mobile\:gap-4 { gap: var(--space-4) !important; }
  .mobile\:w-full { width: 100% !important; }
}

/* Touch-friendly utilities for mobile */
@media (max-width: 768px) {
  .touch\:min-h-12 { min-height: 3rem !important; } /* 48px minimum touch target */
  .touch\:min-w-12 { min-width: 3rem !important; }
  .touch\:p-3 { padding: var(--space-3) !important; } /* Larger padding for touch */
}

/* Print utilities */
@media print {
  .print\:hidden { display: none !important; }
  .print\:block { display: block !important; }
  .print\:text-black { color: #000000 !important; }
  .print\:bg-white { background-color: #ffffff !important; }
}

/* Reduced motion utilities */
@media (prefers-reduced-motion: reduce) {
  .motion-reduce\:transition-none { transition: none !important; }
  .motion-reduce\:transform-none { transform: none !important; }
}

/* High contrast mode utilities */
@media (prefers-contrast: high) {
  .high-contrast\:border-2 { border-width: 2px !important; }
  .high-contrast\:outline { outline: 2px solid currentColor !important; }
}

/* Dark mode utilities (when using CSS-based theme switching) */
@media (prefers-color-scheme: dark) {
  .dark\:surface-primary { background-color: var(--surface-primary) !important; }
  .dark\:text-primary { color: var(--text-primary) !important; }
  .dark\:border-primary { border-color: var(--border-primary) !important; }
}
/* =
==== ACCESSIBILITY ENHANCEMENTS ===== */

/* Skip Links */
.skip-links {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 9999;
  background-color: var(--surface-primary);
  border: 2px solid var(--border-focus);
  border-radius: var(--radius-base);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--duration-200) var(--ease-out);
}

.skip-links:focus {
  top: var(--space-4);
  outline: none;
}

.skip-links:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

/* Focus Management */
.focus-trap {
  position: relative;
}

.focus-trap-start,
.focus-trap-end {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Enhanced Focus Indicators */
*:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Custom focus styles for interactive elements */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-item:focus,
.card-interactive:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--state-focus);
}

/* High contrast focus for better visibility */
@media (prefers-contrast: high) {
  *:focus {
    outline: 3px solid var(--border-focus);
    outline-offset: 3px;
  }
  
  .btn:focus,
  .form-control:focus,
  .form-select:focus {
    box-shadow: 0 0 0 6px var(--state-focus);
  }
}

/* Keyboard Navigation Indicators */
.keyboard-navigation .nav-item:focus,
.keyboard-navigation .btn:focus,
.keyboard-navigation .card-interactive:focus {
  background-color: var(--state-focus);
  transform: scale(1.02);
  transition: all var(--duration-150) var(--ease-out);
}

/* Screen Reader Only Content */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.sr-only-focusable:focus {
  position: static !important;
  width: auto !important;
  height: auto !important;
  padding: var(--space-2) var(--space-3) !important;
  margin: 0 !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
  background-color: var(--surface-primary) !important;
  border: 2px solid var(--border-focus) !important;
  border-radius: var(--radius-base) !important;
  color: var(--text-primary) !important;
  text-decoration: none !important;
  z-index: 9999 !important;
}

/* ARIA Live Regions */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.live-region.polite {
  /* Will be announced when screen reader is idle */
}

.live-region.assertive {
  /* Will interrupt screen reader to announce immediately */
}

/* Accessible Form Labels and Descriptions */
.form-label[for] {
  cursor: pointer;
}

.form-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
  line-height: var(--line-height-relaxed);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--status-error);
  margin-top: var(--space-1);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.form-error::before {
  content: "⚠";
  flex-shrink: 0;
  font-weight: var(--font-weight-bold);
}

/* Accessible Button States */
.btn[disabled],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  pointer-events: none;
}

.btn[aria-pressed="true"] {
  background-color: var(--state-selected);
  border-color: var(--border-focus);
}

/* Accessible Navigation States */
.nav-item[aria-current="page"] {
  background-color: var(--state-selected);
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-item[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--border-focus);
  border-radius: 0 var(--radius-base) var(--radius-base) 0;
}

/* Accessible Modal and Dialog States */
.modal[aria-hidden="true"] {
  display: none;
}

.modal[aria-hidden="false"] {
  display: flex;
}

.modal-backdrop {
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
}

/* Accessible Table Headers */
.table th[scope="col"] {
  font-weight: var(--font-weight-semibold);
  background-color: var(--surface-secondary);
}

.table th[scope="row"] {
  font-weight: var(--font-weight-medium);
  background-color: var(--surface-tertiary);
}

/* Accessible Status Indicators */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.status-indicator::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.status-indicator.status-success::before {
  background-color: var(--status-success);
}

.status-indicator.status-warning::before {
  background-color: var(--status-warning);
}

.status-indicator.status-error::before {
  background-color: var(--status-error);
}

.status-indicator.status-info::before {
  background-color: var(--status-info);
}

/* Accessible Progress Indicators */
.progress[role="progressbar"] {
  background-color: var(--surface-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  height: 0.75rem;
}

.progress-bar {
  height: 100%;
  background-color: var(--status-success);
  transition: width var(--duration-300) var(--ease-out);
  border-radius: var(--radius-full);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .card-modern:hover {
    transform: none;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .nav-item:hover {
    transform: none;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #000000;
    --border-secondary: #000000;
    --text-primary: #000000;
    --text-secondary: #000000;
    --surface-primary: #ffffff;
    --surface-secondary: #ffffff;
  }
  
  [data-theme="dark"] {
    --border-primary: #ffffff;
    --border-secondary: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --surface-primary: #000000;
    --surface-secondary: #000000;
  }
  
  .btn {
    border: 2px solid currentColor;
  }
  
  .card-modern {
    border: 2px solid var(--border-primary);
  }
}

/* Keyboard Shortcuts Indicator */
.keyboard-shortcut {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  background-color: var(--surface-tertiary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-secondary);
  font-family: monospace;
  font-weight: var(--font-weight-medium);
}

.keyboard-shortcut-key {
  background-color: var(--surface-primary);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
  min-width: 1.5rem;
  text-align: center;
}

/* Accessible Tooltips */
.tooltip-accessible {
  position: relative;
  display: inline-block;
}

.tooltip-accessible[aria-describedby] {
  cursor: help;
}

.tooltip-content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--surface-primary);
  color: var(--text-primary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-base);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-md);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  z-index: var(--z-50);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-200) var(--ease-out);
  margin-bottom: var(--space-2);
}

.tooltip-accessible:hover .tooltip-content,
.tooltip-accessible:focus .tooltip-content {
  opacity: 1;
  visibility: visible;
}

.tooltip-content::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 0.25rem solid transparent;
  border-top-color: var(--border-primary);
}

/* Accessible Error States */
.error-boundary {
  padding: var(--space-6);
  background-color: var(--status-error-bg);
  border: 2px solid var(--status-error);
  border-radius: var(--radius-lg);
  text-align: center;
}

.error-boundary h2 {
  color: var(--status-error);
  margin-bottom: var(--space-4);
}

.error-boundary p {
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

/* Accessible Loading States */
.loading-spinner[role="status"] {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 0.25rem solid var(--border-tertiary);
  border-top-color: var(--border-focus);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

.loading-text {
  margin-left: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Accessible Form Validation */
.form-field-invalid {
  border-color: var(--status-error);
  background-color: var(--status-error-bg);
}

.form-field-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.validation-message {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
}

.validation-message.error {
  color: var(--status-error);
}

.validation-message.success {
  color: var(--status-success);
}

.validation-icon {
  flex-shrink: 0;
  margin-top: 0.125rem;
}

/* Accessible Disclosure Widgets */
.disclosure-widget[aria-expanded="false"] .disclosure-content {
  display: none;
}

.disclosure-widget[aria-expanded="true"] .disclosure-content {
  display: block;
}

.disclosure-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: none;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-base);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--duration-150) var(--ease-out);
}

.disclosure-trigger:hover {
  background-color: var(--state-hover);
}

.disclosure-trigger:focus {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.disclosure-icon {
  transition: transform var(--duration-200) var(--ease-out);
}

.disclosure-widget[aria-expanded="true"] .disclosure-icon {
  transform: rotate(180deg);
}