/* ============================================================
   OrderDash Design System — Foundation
   Version: 1.0.0
   
   This file is the single source of truth for all design tokens,
   typography, spacing, layout, and utility classes shared across
   every OrderDash module.
   ============================================================ */

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

/* ------------------------------------------------------------
   2. CSS RESET (Modern Minimal)
   ------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  line-height: 1.5;
  font-size: 16px;
  tab-size: 4;
}

body {
  min-height: 100vh;
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: var(--text-body);
  font-weight: 400;
  color: var(--text-primary);
  background-color: var(--surface);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  font-weight: 600;
}

p {
  overflow-wrap: break-word;
}

/* Remove default search input styling */
input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration {
  -webkit-appearance: none;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 9999px;
}

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

/* ------------------------------------------------------------
   3. CSS CUSTOM PROPERTIES — Light Mode (Default)
   ------------------------------------------------------------ */
:root {
  /* — Primary Brand — */
  --primary:            #6C3CE1;
  --primary-hover:      #5A2DC5;
  --primary-active:     #4E26AB;
  --primary-light:      rgba(108, 60, 225, 0.10);
  --primary-subtle:     rgba(108, 60, 225, 0.06);

  /* — Surfaces — */
  --surface:            #FFFFFF;
  --surface-raised:     #F8F7FC;
  --surface-overlay:    #F1EFF8;
  --surface-inset:      #ECEAF5;

  /* — Borders — */
  --border:             #E5E2EF;
  --border-strong:      #D0CDE0;
  --border-focus:       var(--primary);

  /* — Text — */
  --text-primary:       #1A1A2E;
  --text-secondary:     #6B6B80;
  --text-muted:         #9898AC;
  --text-on-primary:    #FFFFFF;
  --text-inverse:       #F0F0F5;
  --text-link:          var(--primary);

  /* — Status Colors — */
  --success:            #10B981;
  --success-light:      rgba(16, 185, 129, 0.10);
  --success-hover:      #059669;

  --warning:            #F59E0B;
  --warning-light:      rgba(245, 158, 11, 0.10);
  --warning-hover:      #D97706;

  --error:              #EF4444;
  --error-light:        rgba(239, 68, 68, 0.10);
  --error-hover:        #DC2626;

  --info:               #3B82F6;
  --info-light:         rgba(59, 130, 246, 0.10);
  --info-hover:         #2563EB;

  /* — Neutral — */
  --neutral:            #6B6B80;
  --neutral-light:      rgba(107, 107, 128, 0.10);

  /* — Shadows (purple-tinted) — */
  --shadow-xs:          0 1px 2px rgba(108, 60, 225, 0.04);
  --shadow-sm:          0 1px 3px rgba(108, 60, 225, 0.06), 0 1px 2px rgba(108, 60, 225, 0.04);
  --shadow-md:          0 4px 6px -1px rgba(108, 60, 225, 0.07), 0 2px 4px -2px rgba(108, 60, 225, 0.05);
  --shadow-lg:          0 10px 15px -3px rgba(108, 60, 225, 0.08), 0 4px 6px -4px rgba(108, 60, 225, 0.04);
  --shadow-xl:          0 20px 25px -5px rgba(108, 60, 225, 0.10), 0 8px 10px -6px rgba(108, 60, 225, 0.05);
  --shadow-2xl:         0 25px 50px -12px rgba(108, 60, 225, 0.18);
  --shadow-focus:       0 0 0 3px rgba(108, 60, 225, 0.20);
  --shadow-error-focus: 0 0 0 3px rgba(239, 68, 68, 0.20);

  /* — Typography Scale — */
  --text-h1:            2.25rem;   /* 36px */
  --text-h2:            1.75rem;   /* 28px */
  --text-h3:            1.375rem;  /* 22px */
  --text-h4:            1.125rem;  /* 18px */
  --text-body:          0.9375rem; /* 15px */
  --text-caption:       0.8125rem; /* 13px */
  --text-small:         0.6875rem; /* 11px */

  --leading-tight:      1.2;
  --leading-normal:     1.5;
  --leading-relaxed:    1.65;

  /* — Spacing (8px grid) — */
  --space-0:   0;
  --space-0-5: 0.25rem;  /* 4px */
  --space-1:   0.5rem;   /* 8px */
  --space-1-5: 0.75rem;  /* 12px */
  --space-2:   1rem;     /* 16px */
  --space-3:   1.5rem;   /* 24px */
  --space-4:   2rem;     /* 32px */
  --space-6:   3rem;     /* 48px */
  --space-8:   4rem;     /* 64px */
  --space-12:  6rem;     /* 96px */

  /* — Border Radius — */
  --radius-sm:   6px;
  --radius:      8px;
  --radius-md:   10px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-pill:  var(--radius-lg);
  --radius-full:  50%;

  /* — Transitions — */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* — Z-index scale — */
  --z-base:      1;
  --z-dropdown:  100;
  --z-sticky:    200;
  --z-overlay:   300;
  --z-modal:     400;
  --z-toast:     500;
  --z-tooltip:   600;

  /* — Container — */
  --container-max: 1280px;
  --container-pad: var(--space-3);
}

/* ------------------------------------------------------------
   4. DARK MODE OVERRIDES
   ------------------------------------------------------------ */
[data-theme="dark"] {
  /* — Primary Brand — */
  --primary:            #8B5CF6;
  --primary-hover:      #A78BFA;
  --primary-active:     #7C3AED;
  --primary-light:      rgba(139, 92, 246, 0.12);
  --primary-subtle:     rgba(139, 92, 246, 0.06);

  /* — Surfaces — */
  --surface:            #0F0F14;
  --surface-raised:     #1A1A24;
  --surface-overlay:    #24243A;
  --surface-inset:      #12121A;

  /* — Borders — */
  --border:             #2E2E42;
  --border-strong:      #3D3D56;

  /* — Text — */
  --text-primary:       #F0F0F5;
  --text-secondary:     #9898AC;
  --text-muted:         #6B6B80;
  --text-on-primary:    #FFFFFF;
  --text-inverse:       #1A1A2E;
  --text-link:          var(--primary);

  /* — Status Colors — */
  --success:            #34D399;
  --success-light:      rgba(52, 211, 153, 0.12);
  --success-hover:      #10B981;

  --warning:            #FBBF24;
  --warning-light:      rgba(251, 191, 36, 0.12);
  --warning-hover:      #F59E0B;

  --error:              #F87171;
  --error-light:        rgba(248, 113, 113, 0.12);
  --error-hover:        #EF4444;

  --info:               #60A5FA;
  --info-light:         rgba(96, 165, 250, 0.12);
  --info-hover:         #3B82F6;

  /* — Neutral — */
  --neutral:            #9898AC;
  --neutral-light:      rgba(152, 152, 172, 0.12);

  /* — Shadows (deeper for dark) — */
  --shadow-xs:          0 1px 2px rgba(0, 0, 0, 0.20);
  --shadow-sm:          0 1px 3px rgba(0, 0, 0, 0.30), 0 1px 2px rgba(0, 0, 0, 0.20);
  --shadow-md:          0 4px 6px -1px rgba(0, 0, 0, 0.35), 0 2px 4px -2px rgba(0, 0, 0, 0.25);
  --shadow-lg:          0 10px 15px -3px rgba(0, 0, 0, 0.40), 0 4px 6px -4px rgba(0, 0, 0, 0.25);
  --shadow-xl:          0 20px 25px -5px rgba(0, 0, 0, 0.45), 0 8px 10px -6px rgba(0, 0, 0, 0.30);
  --shadow-2xl:         0 25px 50px -12px rgba(0, 0, 0, 0.60);
  --shadow-focus:       0 0 0 3px rgba(139, 92, 246, 0.30);
  --shadow-error-focus: 0 0 0 3px rgba(248, 113, 113, 0.30);

  color-scheme: dark;
}

/* ------------------------------------------------------------
   5. TYPOGRAPHY CLASSES
   ------------------------------------------------------------ */
.h1 {
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.h2 {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.h3 {
  font-size: var(--text-h3);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.h4 {
  font-size: var(--text-h4);
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-primary);
}

.body {
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
}

.caption {
  font-size: var(--text-caption);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--text-secondary);
}

.small {
  font-size: var(--text-small);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--text-muted);
}

.overline {
  font-size: var(--text-small);
  font-weight: 600;
  line-height: var(--leading-normal);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.label {
  font-size: var(--text-caption);
  font-weight: 500;
  line-height: var(--leading-normal);
  color: var(--text-secondary);
}

/* Font weight modifiers */
.font-light    { font-weight: 300; }
.font-regular  { font-weight: 400; }
.font-medium   { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold     { font-weight: 700; }

/* Text wrapping */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ------------------------------------------------------------
   6. SPACING UTILITIES (8px grid)
   
   Scale:
   0.5 =  4px  |  1 =  8px  |  1.5 = 12px  |  2 = 16px
   3   = 24px  |  4 = 32px  |  6   = 48px   |  8 = 64px
   12  = 96px
   ------------------------------------------------------------ */

/* — Margin Top — */
.mt-0   { margin-top: 0; }
.mt-0-5 { margin-top: var(--space-0-5); }
.mt-1   { margin-top: var(--space-1); }
.mt-1-5 { margin-top: var(--space-1-5); }
.mt-2   { margin-top: var(--space-2); }
.mt-3   { margin-top: var(--space-3); }
.mt-4   { margin-top: var(--space-4); }
.mt-6   { margin-top: var(--space-6); }
.mt-8   { margin-top: var(--space-8); }
.mt-12  { margin-top: var(--space-12); }

/* — Margin Bottom — */
.mb-0   { margin-bottom: 0; }
.mb-0-5 { margin-bottom: var(--space-0-5); }
.mb-1   { margin-bottom: var(--space-1); }
.mb-1-5 { margin-bottom: var(--space-1-5); }
.mb-2   { margin-bottom: var(--space-2); }
.mb-3   { margin-bottom: var(--space-3); }
.mb-4   { margin-bottom: var(--space-4); }
.mb-6   { margin-bottom: var(--space-6); }
.mb-8   { margin-bottom: var(--space-8); }
.mb-12  { margin-bottom: var(--space-12); }

/* — Margin Left — */
.ml-0   { margin-left: 0; }
.ml-0-5 { margin-left: var(--space-0-5); }
.ml-1   { margin-left: var(--space-1); }
.ml-1-5 { margin-left: var(--space-1-5); }
.ml-2   { margin-left: var(--space-2); }
.ml-3   { margin-left: var(--space-3); }
.ml-4   { margin-left: var(--space-4); }
.ml-6   { margin-left: var(--space-6); }
.ml-8   { margin-left: var(--space-8); }
.ml-12  { margin-left: var(--space-12); }

/* — Margin Right — */
.mr-0   { margin-right: 0; }
.mr-0-5 { margin-right: var(--space-0-5); }
.mr-1   { margin-right: var(--space-1); }
.mr-1-5 { margin-right: var(--space-1-5); }
.mr-2   { margin-right: var(--space-2); }
.mr-3   { margin-right: var(--space-3); }
.mr-4   { margin-right: var(--space-4); }
.mr-6   { margin-right: var(--space-6); }
.mr-8   { margin-right: var(--space-8); }
.mr-12  { margin-right: var(--space-12); }

/* — Margin X (horizontal) — */
.mx-0   { margin-left: 0; margin-right: 0; }
.mx-0-5 { margin-left: var(--space-0-5); margin-right: var(--space-0-5); }
.mx-1   { margin-left: var(--space-1); margin-right: var(--space-1); }
.mx-1-5 { margin-left: var(--space-1-5); margin-right: var(--space-1-5); }
.mx-2   { margin-left: var(--space-2); margin-right: var(--space-2); }
.mx-3   { margin-left: var(--space-3); margin-right: var(--space-3); }
.mx-4   { margin-left: var(--space-4); margin-right: var(--space-4); }
.mx-6   { margin-left: var(--space-6); margin-right: var(--space-6); }
.mx-8   { margin-left: var(--space-8); margin-right: var(--space-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

/* — Margin Y (vertical) — */
.my-0   { margin-top: 0; margin-bottom: 0; }
.my-0-5 { margin-top: var(--space-0-5); margin-bottom: var(--space-0-5); }
.my-1   { margin-top: var(--space-1); margin-bottom: var(--space-1); }
.my-1-5 { margin-top: var(--space-1-5); margin-bottom: var(--space-1-5); }
.my-2   { margin-top: var(--space-2); margin-bottom: var(--space-2); }
.my-3   { margin-top: var(--space-3); margin-bottom: var(--space-3); }
.my-4   { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.my-6   { margin-top: var(--space-6); margin-bottom: var(--space-6); }
.my-8   { margin-top: var(--space-8); margin-bottom: var(--space-8); }

/* — Padding All — */
.p-0   { padding: 0; }
.p-0-5 { padding: var(--space-0-5); }
.p-1   { padding: var(--space-1); }
.p-1-5 { padding: var(--space-1-5); }
.p-2   { padding: var(--space-2); }
.p-3   { padding: var(--space-3); }
.p-4   { padding: var(--space-4); }
.p-6   { padding: var(--space-6); }
.p-8   { padding: var(--space-8); }
.p-12  { padding: var(--space-12); }

/* — Padding X — */
.px-0   { padding-left: 0; padding-right: 0; }
.px-0-5 { padding-left: var(--space-0-5); padding-right: var(--space-0-5); }
.px-1   { padding-left: var(--space-1); padding-right: var(--space-1); }
.px-1-5 { padding-left: var(--space-1-5); padding-right: var(--space-1-5); }
.px-2   { padding-left: var(--space-2); padding-right: var(--space-2); }
.px-3   { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4   { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6   { padding-left: var(--space-6); padding-right: var(--space-6); }
.px-8   { padding-left: var(--space-8); padding-right: var(--space-8); }

/* — Padding Y — */
.py-0   { padding-top: 0; padding-bottom: 0; }
.py-0-5 { padding-top: var(--space-0-5); padding-bottom: var(--space-0-5); }
.py-1   { padding-top: var(--space-1); padding-bottom: var(--space-1); }
.py-1-5 { padding-top: var(--space-1-5); padding-bottom: var(--space-1-5); }
.py-2   { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3   { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4   { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6   { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8   { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12  { padding-top: var(--space-12); padding-bottom: var(--space-12); }

/* — Padding individual — */
.pt-0 { padding-top: 0; }    .pt-1 { padding-top: var(--space-1); }
.pt-2 { padding-top: var(--space-2); }  .pt-3 { padding-top: var(--space-3); }
.pt-4 { padding-top: var(--space-4); }  .pt-6 { padding-top: var(--space-6); }

.pb-0 { padding-bottom: 0; }    .pb-1 { padding-bottom: var(--space-1); }
.pb-2 { padding-bottom: var(--space-2); }  .pb-3 { padding-bottom: var(--space-3); }
.pb-4 { padding-bottom: var(--space-4); }  .pb-6 { padding-bottom: var(--space-6); }

.pl-0 { padding-left: 0; }    .pl-1 { padding-left: var(--space-1); }
.pl-2 { padding-left: var(--space-2); }  .pl-3 { padding-left: var(--space-3); }

.pr-0 { padding-right: 0; }    .pr-1 { padding-right: var(--space-1); }
.pr-2 { padding-right: var(--space-2); }  .pr-3 { padding-right: var(--space-3); }

/* ------------------------------------------------------------
   7. LAYOUT UTILITIES
   ------------------------------------------------------------ */

/* Flexbox */
.flex            { display: flex; }
.inline-flex     { display: inline-flex; }
.flex-col        { flex-direction: column; }
.flex-row        { flex-direction: row; }
.flex-wrap       { flex-wrap: wrap; }
.flex-nowrap     { flex-wrap: nowrap; }
.flex-1          { flex: 1 1 0%; }
.flex-auto       { flex: 1 1 auto; }
.flex-none       { flex: none; }
.flex-shrink-0   { flex-shrink: 0; }
.flex-grow       { flex-grow: 1; }

/* Alignment */
.items-start     { align-items: flex-start; }
.items-center    { align-items: center; }
.items-end       { align-items: flex-end; }
.items-stretch   { align-items: stretch; }
.items-baseline  { align-items: baseline; }

.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; }
.justify-evenly  { justify-content: space-evenly; }

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

/* Gap */
.gap-0-5 { gap: var(--space-0-5); }
.gap-1   { gap: var(--space-1); }
.gap-1-5 { gap: var(--space-1-5); }
.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); }

/* Grid */
.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-6     { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12    { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.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-6      { grid-column: span 6 / span 6; }
.col-span-full   { grid-column: 1 / -1; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* Positioning */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed    { position: fixed; }
.sticky   { position: sticky; }
.inset-0  { inset: 0; }
.top-0    { top: 0; }
.right-0  { right: 0; }
.bottom-0 { bottom: 0; }
.left-0   { left: 0; }

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

/* ------------------------------------------------------------
   8. DISPLAY UTILITIES
   ------------------------------------------------------------ */
.hidden       { display: none !important; }
.block        { display: block !important; }
.inline-block { display: inline-block !important; }
.inline       { display: inline !important; }

.w-full       { width: 100%; }
.h-full       { height: 100%; }
.min-h-screen { min-height: 100vh; }
.w-auto       { width: auto; }
.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-full   { max-width: 100%; }

.text-left    { text-align: left; }
.text-center  { text-align: center; }
.text-right   { text-align: right; }

.whitespace-nowrap { white-space: nowrap; }

.cursor-pointer  { cursor: pointer; }
.cursor-default  { cursor: default; }
.pointer-events-none { pointer-events: none; }
.select-none     { user-select: none; }

/* Visibility */
.visible   { visibility: visible; }
.invisible { visibility: hidden; }

.opacity-0   { opacity: 0; }
.opacity-50  { opacity: 0.5; }
.opacity-75  { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* ------------------------------------------------------------
   9. COLOR UTILITY CLASSES
   ------------------------------------------------------------ */

/* Text colors */
.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-brand     { color: var(--primary); }
.text-success   { color: var(--success); }
.text-warning   { color: var(--warning); }
.text-error     { color: var(--error); }
.text-info      { color: var(--info); }
.text-on-primary { color: var(--text-on-primary); }
.text-inverse   { color: var(--text-inverse); }

/* Background colors */
.bg-surface  { background-color: var(--surface); }
.bg-raised   { background-color: var(--surface-raised); }
.bg-overlay  { background-color: var(--surface-overlay); }
.bg-inset    { background-color: var(--surface-inset); }
.bg-primary  { background-color: var(--primary); }
.bg-success  { background-color: var(--success); }
.bg-warning  { background-color: var(--warning); }
.bg-error    { background-color: var(--error); }
.bg-info     { background-color: var(--info); }
.bg-primary-light { background-color: var(--primary-light); }
.bg-success-light { background-color: var(--success-light); }
.bg-warning-light { background-color: var(--warning-light); }
.bg-error-light   { background-color: var(--error-light); }
.bg-info-light    { background-color: var(--info-light); }
.bg-transparent   { background-color: transparent; }

/* Border colors */
.border         { border: 1px solid var(--border); }
.border-strong  { border: 1px solid var(--border-strong); }
.border-primary { border-color: var(--primary); }
.border-error   { border-color: var(--error); }
.border-success { border-color: var(--success); }
.border-t       { border-top: 1px solid var(--border); }
.border-b       { border-bottom: 1px solid var(--border); }
.border-l       { border-left: 1px solid var(--border); }
.border-r       { border-right: 1px solid var(--border); }
.border-none    { border: none; }

/* ------------------------------------------------------------
   10. BORDER RADIUS UTILITIES
   ------------------------------------------------------------ */
.rounded-none { border-radius: 0; }
.rounded-sm   { border-radius: var(--radius-sm); }
.rounded      { border-radius: var(--radius); }
.rounded-md   { border-radius: var(--radius-md); }
.rounded-lg   { border-radius: var(--radius-lg); }
.rounded-xl   { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }
.rounded-pill { border-radius: var(--radius-pill); }

/* Shadow utilities */
.shadow-none  { box-shadow: none; }
.shadow-xs    { box-shadow: var(--shadow-xs); }
.shadow-sm    { box-shadow: var(--shadow-sm); }
.shadow       { box-shadow: var(--shadow-md); }
.shadow-md    { box-shadow: var(--shadow-md); }
.shadow-lg    { box-shadow: var(--shadow-lg); }
.shadow-xl    { box-shadow: var(--shadow-xl); }
.shadow-2xl   { box-shadow: var(--shadow-2xl); }

/* ------------------------------------------------------------
   11. RESPONSIVE BREAKPOINTS
   ------------------------------------------------------------ */
@media (min-width: 640px) {
  .sm\:flex        { display: flex !important; }
  .sm\:inline-flex { display: inline-flex !important; }
  .sm\:hidden      { display: none !important; }
  .sm\:block       { display: block !important; }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:flex-row    { flex-direction: row; }
}

@media (min-width: 768px) {
  .md\:flex        { display: flex !important; }
  .md\:hidden      { display: none !important; }
  .md\:block       { display: block !important; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:flex-row    { flex-direction: row; }
  .md\:col-span-1  { grid-column: span 1 / span 1; }
  .md\:col-span-2  { grid-column: span 2 / span 2; }
  .md\:col-span-3  { grid-column: span 3 / span 3; }
}

@media (min-width: 1024px) {
  .lg\:flex        { display: flex !important; }
  .lg\:hidden      { display: none !important; }
  .lg\:block       { display: block !important; }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:flex-row    { flex-direction: row; }
  .lg\:col-span-1  { grid-column: span 1 / span 1; }
  .lg\:col-span-2  { grid-column: span 2 / span 2; }
  .lg\:col-span-3  { grid-column: span 3 / span 3; }
}

@media (min-width: 1280px) {
  .xl\:flex        { display: flex !important; }
  .xl\:hidden      { display: none !important; }
  .xl\:block       { display: block !important; }
  .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .xl\:col-span-1  { grid-column: span 1 / span 1; }
  .xl\:col-span-2  { grid-column: span 2 / span 2; }
  .xl\:col-span-3  { grid-column: span 3 / span 3; }
}

/* ------------------------------------------------------------
   12. FOCUS MANAGEMENT
   ------------------------------------------------------------ */
.focus-ring:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Hide focus ring for mouse users, show for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Visually hidden but accessible to screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------
   13. MOBILE RESPONSIVE UTILITIES & SCALE
   ------------------------------------------------------------ */
@media (max-width: 767px) {
  :root {
    --text-h1:            1.875rem;   /* 30px */
    --text-h2:            1.5rem;     /* 24px */
    --text-h3:            1.25rem;    /* 20px */
    --container-pad:      var(--space-2); /* 16px container padding */
  }
}