/* ==========================================================================
   Design System CSS - Part 1
   All styles, tokens, and components for PropSizzle design system.
   ========================================================================== */

/* ==========================================================================
   1. CSS Reset
   ========================================================================== */

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

* {
  margin: 0;
  padding: 0;
}

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

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

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

table {
  border-collapse: collapse;
}

/* ==========================================================================
   2. Root Tokens
   ========================================================================== */

:root {
  /* Colors - Primary (Coral default, base #e8604c) */
  --color-primary-50: #fef2f0;
  --color-primary-100: #fde0db;
  --color-primary-200: #fbc0b5;
  --color-primary-300: #f49a8a;
  --color-primary-400: #f07a68;
  --color-primary-500: #e8604c;
  --color-primary-600: #d44935;
  --color-primary-700: #b33728;
  --color-primary-800: #922d21;
  --color-primary-900: #7a2720;

  /* Neutral */
  --color-neutral-0: #ffffff;
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2937;
  --color-neutral-900: #111827;

  /* Semantic - Success */
  --color-success-50: #ecfdf5;
  --color-success-500: #22c55e;
  --color-success-700: #15803d;

  /* Semantic - Warning */
  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-700: #b45309;

  /* Semantic - Error */
  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-700: #b91c1c;

  /* Semantic - Info */
  --color-info-50: #eff6ff;
  --color-info-500: #3b82f6;
  --color-info-700: #1d4ed8;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-loose: 1.75;

  /* Spacing */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-overlay: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
  --z-toast: 1070;

  /* Transitions */
  --transition-fast: 150ms;
  --transition-normal: 200ms;
  --transition-slow: 300ms;

  /* Layout */
  --container-max: 1200px;
  --sidebar-width: 260px;
}

/* ==========================================================================
   3. Theme Palettes
   ========================================================================== */

[data-theme="indigo"] {
  --color-primary-50: #eef2ff;
  --color-primary-100: #e0e7ff;
  --color-primary-200: #c7d2fe;
  --color-primary-300: #a5b4fc;
  --color-primary-400: #818cf8;
  --color-primary-500: #6366f1;
  --color-primary-600: #4f46e5;
  --color-primary-700: #4338ca;
  --color-primary-800: #3730a3;
  --color-primary-900: #312e81;
}

[data-theme="emerald"] {
  --color-primary-50: #ecfdf5;
  --color-primary-100: #d1fae5;
  --color-primary-200: #a7f3d0;
  --color-primary-300: #6ee7b7;
  --color-primary-400: #34d399;
  --color-primary-500: #10b981;
  --color-primary-600: #059669;
  --color-primary-700: #047857;
  --color-primary-800: #065f46;
  --color-primary-900: #064e3b;
}

[data-theme="rose"] {
  --color-primary-50: #fff1f2;
  --color-primary-100: #ffe4e6;
  --color-primary-200: #fecdd3;
  --color-primary-300: #fda4af;
  --color-primary-400: #fb7185;
  --color-primary-500: #f43f5e;
  --color-primary-600: #e11d48;
  --color-primary-700: #be123c;
  --color-primary-800: #9f1239;
  --color-primary-900: #881337;
}

[data-theme="amber"] {
  --color-primary-50: #fffbeb;
  --color-primary-100: #fef3c7;
  --color-primary-200: #fde68a;
  --color-primary-300: #fcd34d;
  --color-primary-400: #fbbf24;
  --color-primary-500: #f59e0b;
  --color-primary-600: #d97706;
  --color-primary-700: #b45309;
  --color-primary-800: #92400e;
  --color-primary-900: #78350f;
}

[data-theme="violet"] {
  --color-primary-50: #f5f3ff;
  --color-primary-100: #ede9fe;
  --color-primary-200: #ddd6fe;
  --color-primary-300: #c4b5fd;
  --color-primary-400: #a78bfa;
  --color-primary-500: #8b5cf6;
  --color-primary-600: #7c3aed;
  --color-primary-700: #6d28d9;
  --color-primary-800: #5b21b6;
  --color-primary-900: #4c1d95;
}

[data-theme="cyan"] {
  --color-primary-50: #ecfeff;
  --color-primary-100: #cffafe;
  --color-primary-200: #a5f3fc;
  --color-primary-300: #67e8f9;
  --color-primary-400: #22d3ee;
  --color-primary-500: #06b6d4;
  --color-primary-600: #0891b2;
  --color-primary-700: #0e7490;
  --color-primary-800: #155e75;
  --color-primary-900: #164e63;
}

[data-theme="slate"] {
  --color-primary-50: #f8fafc;
  --color-primary-100: #f1f5f9;
  --color-primary-200: #e2e8f0;
  --color-primary-300: #cbd5e1;
  --color-primary-400: #94a3b8;
  --color-primary-500: #64748b;
  --color-primary-600: #475569;
  --color-primary-700: #334155;
  --color-primary-800: #1e293b;
  --color-primary-900: #0f172a;
}

[data-theme="orange"] {
  --color-primary-50: #fff7ed;
  --color-primary-100: #ffedd5;
  --color-primary-200: #fed7aa;
  --color-primary-300: #fdba74;
  --color-primary-400: #fb923c;
  --color-primary-500: #f97316;
  --color-primary-600: #ea580c;
  --color-primary-700: #c2410c;
  --color-primary-800: #9a3412;
  --color-primary-900: #7c2d12;
}

/* ==========================================================================
   4. Dark Mode
   ========================================================================== */

[data-mode="dark"] {
  /* Neutral scale inverted */
  --color-neutral-0: #0f1117;
  --color-neutral-50: #161822;
  --color-neutral-100: #1e2030;
  --color-neutral-200: #2a2d3e;
  --color-neutral-300: #3b3f54;
  --color-neutral-400: #6b7194;
  --color-neutral-500: #9299b8;
  --color-neutral-600: #b0b7d3;
  --color-neutral-700: #cdd3e8;
  --color-neutral-800: #e2e6f4;
  --color-neutral-900: #f0f2f9;

  /* Semantic - Success */
  --color-success-50: #0b2e1e;
  --color-success-500: #22c55e;
  --color-success-700: #4ade80;

  /* Semantic - Warning */
  --color-warning-50: #2e2008;
  --color-warning-500: #f59e0b;
  --color-warning-700: #fbbf24;

  /* Semantic - Error */
  --color-error-50: #2e0f0f;
  --color-error-500: #ef4444;
  --color-error-700: #f87171;

  /* Semantic - Info */
  --color-info-50: #0f1e2e;
  --color-info-500: #3b82f6;
  --color-info-700: #60a5fa;

  /* Shadows with higher opacity */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

[data-mode="dark"] body {
  background-color: var(--color-neutral-0);
  color: var(--color-neutral-800);
}

/* ==========================================================================
   5. Base Styles
   ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  background-color: var(--color-neutral-0);
  color: var(--color-neutral-800);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   6. Layout Components
   ========================================================================== */

.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 767px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 640px) and (max-width: 767px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.sidebar-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
}

/* ==========================================================================
   7. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-neutral-900);
}

h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-6);
}

h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--spacing-5);
}

h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-4);
}

h4 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-3);
}

h5 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-3);
}

h6 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-2);
}

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }

.label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-700);
}

.caption {
  font-size: var(--text-xs);
  color: var(--color-neutral-500);
}

a {
  color: var(--color-primary-600);
  text-decoration: underline;
  transition: color var(--transition-fast) ease;
}

a:hover {
  color: var(--color-primary-700);
}

code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-neutral-100);
  border-radius: var(--radius-md);
  padding: var(--spacing-1) var(--spacing-2);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background-color: var(--color-neutral-100);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  overflow-x: auto;
}

pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   8. Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  font-weight: var(--font-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast) ease;
  cursor: pointer;
  border: none;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  line-height: var(--leading-tight);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Variants */
.btn--primary {
  background-color: var(--color-primary-600);
  color: #ffffff;
}
.btn--primary:hover {
  background-color: var(--color-primary-700);
}

.btn--secondary {
  background-color: var(--color-neutral-200);
  color: var(--color-neutral-800);
}
.btn--secondary:hover {
  background-color: var(--color-neutral-300);
}

.btn--outline {
  background-color: transparent;
  border: 1px solid var(--color-primary-600);
  color: var(--color-primary-600);
}
.btn--outline:hover {
  background-color: var(--color-primary-50);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-primary-600);
}
.btn--ghost:hover {
  background-color: var(--color-primary-50);
}

.btn--danger {
  background-color: var(--color-error-500);
  color: #ffffff;
}
.btn--danger:hover {
  background-color: var(--color-error-700);
}

.btn--success {
  background-color: var(--color-success-500);
  color: #ffffff;
}
.btn--success:hover {
  background-color: var(--color-success-700);
}

.btn--warning {
  background-color: var(--color-warning-500);
  color: #ffffff;
}
.btn--warning:hover {
  background-color: var(--color-warning-700);
}

.btn--info {
  background-color: var(--color-info-500);
  color: #ffffff;
}
.btn--info:hover {
  background-color: var(--color-info-700);
}

.btn--dark {
  background-color: var(--color-neutral-800);
  color: #ffffff;
}
.btn--dark:hover {
  background-color: var(--color-neutral-900);
}

.btn--light {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-800);
}
.btn--light:hover {
  background-color: var(--color-neutral-200);
}

.btn--link {
  background-color: transparent;
  border: none;
  color: var(--color-primary-600);
  padding: 0;
}
.btn--link:hover {
  text-decoration: underline;
}

/* Soft variants */
.btn--soft-primary {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}
.btn--soft-primary:hover {
  background-color: var(--color-primary-100);
}

.btn--soft-danger {
  background-color: var(--color-error-50);
  color: var(--color-error-700);
}
.btn--soft-danger:hover {
  background-color: var(--color-error-50);
  filter: brightness(0.95);
}

.btn--soft-success {
  background-color: var(--color-success-50);
  color: var(--color-success-700);
}
.btn--soft-success:hover {
  background-color: var(--color-success-50);
  filter: brightness(0.95);
}

.btn--soft-warning {
  background-color: var(--color-warning-50);
  color: var(--color-warning-700);
}
.btn--soft-warning:hover {
  background-color: var(--color-warning-50);
  filter: brightness(0.95);
}

.btn--soft-info {
  background-color: var(--color-info-50);
  color: var(--color-info-700);
}
.btn--soft-info:hover {
  background-color: var(--color-info-50);
  filter: brightness(0.95);
}

.btn--danger-outline {
  background-color: transparent;
  border: 1px solid var(--color-error-500);
  color: var(--color-error-500);
}
.btn--danger-outline:hover {
  background-color: var(--color-error-50);
}

/* Sizes */
.btn--xs {
  font-size: var(--text-xs);
  padding: var(--spacing-1) var(--spacing-2);
}

.btn--sm {
  font-size: var(--text-sm);
  padding: var(--spacing-1) var(--spacing-3);
}

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

.btn--xl {
  font-size: var(--text-lg);
  padding: var(--spacing-4) var(--spacing-8);
}

/* Shapes */
.btn--rounded,
.btn--pill {
  border-radius: var(--radius-full);
}

.btn--square {
  padding: var(--spacing-2);
}

/* Block */
.btn--block {
  width: 100%;
}

/* Icon button */
.btn--icon {
  padding: var(--spacing-2);
}
.btn--icon.btn--xs { padding: var(--spacing-1); }
.btn--icon.btn--sm { padding: var(--spacing-1); }
.btn--icon.btn--lg { padding: var(--spacing-3); }
.btn--icon.btn--xl { padding: var(--spacing-4); }

/* Loading state */
.btn--loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

.btn--loading::after {
  content: "";
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--radius-full);
  animation: btn-spin 0.6s linear infinite;
}

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

/* Button group */
.btn-group {
  display: flex;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn + .btn {
  margin-left: -1px;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.btn-group .btn:only-child {
  border-radius: var(--radius-md);
}

/* ==========================================================================
   9. Forms
   ========================================================================== */

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

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-700);
  margin-bottom: var(--spacing-1);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background-color: var(--color-neutral-0);
  color: var(--color-neutral-800);
  transition: border-color var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-200);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-neutral-400);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-3) center;
  padding-right: var(--spacing-10);
}

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

/* Checkbox and Radio */
.form-checkbox,
.form-radio {
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--color-primary-600);
  cursor: pointer;
}

.form-radio {
  border-radius: var(--radius-full);
}

/* Toggle / Switch */
.form-toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.form-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.form-toggle__slider {
  position: absolute;
  inset: 0;
  background-color: var(--color-neutral-300);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast) ease;
}

.form-toggle__slider::before {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #ffffff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast) ease;
}

.form-toggle input:checked + .form-toggle__slider {
  background-color: var(--color-primary-600);
}

.form-toggle input:checked + .form-toggle__slider::before {
  transform: translateX(20px);
}

.form-toggle input:focus-visible + .form-toggle__slider {
  box-shadow: 0 0 0 3px var(--color-primary-200);
}

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

.input-group .form-input {
  border-radius: 0;
  flex: 1;
}

.input-group .form-select {
  border-radius: 0;
}

.input-group .btn {
  border-radius: 0;
}

.input-group > :first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group > :last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group > :not(:first-child) {
  margin-left: -1px;
}

/* Inline Form */
.form-inline {
  display: flex;
  gap: var(--spacing-3);
  align-items: flex-end;
}

/* Validation States */
.form-input--error {
  border-color: var(--color-error-500);
}

.form-input--error:focus {
  border-color: var(--color-error-500);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-input--success {
  border-color: var(--color-success-500);
}

.form-input--success:focus {
  border-color: var(--color-success-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error-500);
  margin-top: var(--spacing-1);
}

/* ==========================================================================
   10. Navigation
   ========================================================================== */

/* ---------- Header ---------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: #fff;
  border-bottom: 1px solid #e8e8e8;
  transition: box-shadow .3s ease;
}

.header.is-scrolled {
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1a1a2e;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.header__logo span {
  color: #e8604c;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header__login {
  font-size: .9rem;
  font-weight: 500;
  color: #4a4a5a;
  text-decoration: none;
}

.header__login:hover {
  color: #e8604c;
}

/* ---------- Navigation ---------- */

.nav {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: .95rem;
  font-weight: 500;
  color: #4a4a5a;
  text-decoration: none;
  transition: color .2s ease;
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #e8604c;
  transition: width .2s ease;
}

.nav__link:hover,
.nav__link.is-active {
  color: #1a1a2e;
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: 100%;
}

/* ---------- Sidebar Nav ---------- */

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.sidebar-nav__group {
  margin-bottom: var(--spacing-2);
}

.sidebar-nav__group-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  color: var(--color-neutral-400);
  padding-left: var(--spacing-3);
  padding-right: var(--spacing-3);
  margin-bottom: var(--spacing-1);
  letter-spacing: 0.05em;
}

.sidebar-nav__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-md);
  color: var(--color-neutral-600);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  transition: all var(--transition-fast) ease;
}

.sidebar-nav__item:hover {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-600);
}

.sidebar-nav__item--active {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  font-weight: var(--font-semibold);
}

.sidebar-nav__item--active:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}

.sidebar-nav__icon {
  width: 1.125rem;
  height: 1.125rem;
  opacity: 0.7;
  flex-shrink: 0;
}

.sidebar-nav__item--active .sidebar-nav__icon {
  opacity: 1;
}

.sidebar-nav__badge {
  margin-left: auto;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  padding: 2px var(--spacing-2);
  border-radius: var(--radius-full);
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

.sidebar-nav__badge--danger {
  background-color: var(--color-error-50);
  color: var(--color-error-700);
}

.sidebar-nav__badge--neutral {
  background-color: var(--color-neutral-200);
  color: var(--color-neutral-600);
}

/* Collapsible groups */
.sidebar-nav__group--collapsible {
  /* container for collapsible behavior */
}

.sidebar-nav__group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  background-color: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-md);
  color: var(--color-neutral-600);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  transition: all var(--transition-fast) ease;
}

.sidebar-nav__group-toggle > span {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.sidebar-nav__group-toggle:hover {
  background-color: var(--color-neutral-100);
}

.sidebar-nav__group--has-active > .sidebar-nav__group-toggle {
  color: var(--color-primary-600);
}

.sidebar-nav__group-items {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
}

.sidebar-nav__group--open > .sidebar-nav__group-items {
  max-height: 500px;
}

/* Sub-items inside collapsible groups */
.sidebar-nav__group-items .sidebar-nav__item {
  padding-left: var(--spacing-8);
  font-size: var(--text-xs);
  border-left: 2px solid transparent;
}

.sidebar-nav__group-items .sidebar-nav__item--active {
  border-left-color: var(--color-primary-500);
}

.sidebar-nav__group-items .sidebar-nav__icon {
  width: 1rem;
  height: 1rem;
}

/* ---------- Breadcrumbs ---------- */

.breadcrumbs {
  display: flex;
  gap: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  list-style: none;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--color-neutral-400);
}

.breadcrumbs__link {
  color: var(--color-neutral-500);
  text-decoration: none;
}

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

.breadcrumbs__current {
  color: var(--color-neutral-800);
  font-weight: var(--font-medium);
}

/* ---------- Tabs ---------- */

.tabs {
  display: block;
}

.tabs__list {
  display: flex;
  border-bottom: 2px solid var(--color-neutral-200);
  gap: 0;
}

.tabs__tab {
  padding: var(--spacing-3) var(--spacing-4);
  background-color: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  transition: all var(--transition-fast) ease;
  margin-bottom: -2px;
}

.tabs__tab:hover {
  color: var(--color-neutral-700);
}

.tabs__tab--active {
  color: var(--color-primary-600);
  border-bottom-color: var(--color-primary-600);
}

.tabs__content {
  padding-top: var(--spacing-4);
}

.tabs__panel {
  display: none;
}

.tabs__panel--active {
  display: block;
}

/* ---------- Pagination ---------- */

.pagination {
  display: flex;
  gap: var(--spacing-1);
  align-items: center;
}

.pagination__item {
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
  text-decoration: none;
  transition: all var(--transition-fast) ease;
  cursor: pointer;
}

.pagination__item:hover {
  background-color: var(--color-neutral-100);
}

.pagination__item--active {
  background-color: var(--color-primary-600);
  color: #ffffff;
  font-weight: var(--font-medium);
}

.pagination__item--active:hover {
  background-color: var(--color-primary-600);
}

/* ==========================================================================
   11. Data Display
   ========================================================================== */

/* Tables */
.table-container {
  overflow-x: auto;
}

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

.table th {
  background-color: var(--color-neutral-50);
  font-weight: var(--font-semibold);
  text-align: left;
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 2px solid var(--color-neutral-200);
  color: var(--color-neutral-700);
}

.table td {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-neutral-200);
  color: var(--color-neutral-600);
}

.table tr:hover td {
  background-color: var(--color-neutral-50);
}

.table--striped tbody tr:nth-child(even) td {
  background-color: var(--color-neutral-50);
}

/* Cards */
.card {
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
  overflow: hidden;
}

.card__header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.card__body {
  padding: var(--spacing-4) var(--spacing-6);
}

.card__footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-neutral-200);
  background-color: var(--color-neutral-50);
}

.card--clickable {
  cursor: pointer;
  transition: box-shadow var(--transition-normal) ease, transform var(--transition-normal) ease;
}

.card--clickable:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Stat Cards */
.stat-card {
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-200);
  padding: var(--spacing-6);
}

.stat-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.stat-card__label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-neutral-500);
}

.stat-card__value {
  font-size: 1.875rem;
  font-weight: var(--font-bold);
  color: var(--color-neutral-900);
  margin-top: var(--spacing-1);
}

.stat-card__change {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-top: var(--spacing-2);
}

.stat-card__change--positive {
  color: var(--color-success-500);
}

.stat-card__change--negative {
  color: var(--color-error-500);
}

.stat-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
}

.stat-card__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.stat-card__icon--success {
  background-color: var(--color-success-50);
  color: var(--color-success-500);
}

.stat-card__icon--warning {
  background-color: var(--color-warning-50);
  color: var(--color-warning-500);
}

.stat-card__icon--danger {
  background-color: var(--color-error-50);
  color: var(--color-error-500);
}

.stat-card__icon--info {
  background-color: var(--color-info-50);
  color: var(--color-info-500);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--spacing-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

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

.badge--success {
  background-color: var(--color-success-50);
  color: var(--color-success-700);
}

.badge--warning {
  background-color: var(--color-warning-50);
  color: var(--color-warning-700);
}

.badge--danger {
  background-color: var(--color-error-50);
  color: var(--color-error-700);
}

.badge--info {
  background-color: var(--color-info-50);
  color: var(--color-info-700);
}

.badge--neutral {
  background-color: var(--color-neutral-200);
  color: var(--color-neutral-700);
}

/* Avatars */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
  font-weight: var(--font-semibold);
  overflow: hidden;
}

.avatar--sm {
  width: 2rem;
  height: 2rem;
  font-size: var(--text-xs);
}

.avatar--md {
  width: 2.5rem;
  height: 2.5rem;
  font-size: var(--text-sm);
}

.avatar--lg {
  width: 3rem;
  height: 3rem;
  font-size: var(--text-base);
}

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

/* Lists */
.list {
  list-style: none;
  padding: 0;
}

.list__item {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-neutral-200);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: var(--spacing-16) var(--spacing-6);
}

.empty-state__icon {
  width: 4rem;
  height: 4rem;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--spacing-4);
  color: var(--color-neutral-300);
}

.empty-state__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-700);
  margin-bottom: var(--spacing-2);
}

.empty-state__text {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  margin-bottom: var(--spacing-6);
}

/* Skeleton Loading */
.skeleton {
  background-color: var(--color-neutral-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(100%);
  }
}

.skeleton--text {
  height: 1rem;
  width: 100%;
}

.skeleton--title {
  height: 1.5rem;
  width: 60%;
}

.skeleton--avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
}

.skeleton--card {
  height: 200px;
}

/* ==========================================================================
   12. Feedback
   ========================================================================== */

/* Alerts */
.alert {
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-md);
  display: flex;
  gap: var(--spacing-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  border: 1px solid;
}

.alert--success {
  background-color: var(--color-success-50);
  border-color: rgba(34, 197, 94, 0.2);
  color: var(--color-success-700);
}

.alert--warning {
  background-color: var(--color-warning-50);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--color-warning-700);
}

.alert--error {
  background-color: var(--color-error-50);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--color-error-700);
}

.alert--info {
  background-color: var(--color-info-50);
  border-color: rgba(59, 130, 246, 0.2);
  color: var(--color-info-700);
}

.alert__dismiss {
  margin-left: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  opacity: 0.5;
}

.alert__dismiss:hover {
  opacity: 1;
}

/* Toasts */
.toast-container {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.toast {
  background-color: var(--color-neutral-0);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3) var(--spacing-4);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  min-width: 300px;
  border: 1px solid var(--color-neutral-200);
  animation: toast-in 0.3s ease;
}

.toast--success {
  border-left: 4px solid var(--color-success-500);
}

.toast--error {
  border-left: 4px solid var(--color-error-500);
}

.toast--warning {
  border-left: 4px solid var(--color-warning-500);
}

.toast--info {
  border-left: 4px solid var(--color-info-500);
}

.toast__close {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-neutral-400);
}

.toast__close:hover {
  color: var(--color-neutral-600);
}

@keyframes toast-in {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes toast-out {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s;
}

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

.modal {
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform 0.3s;
}

.modal-backdrop--active .modal {
  transform: scale(1);
}

.modal__header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-neutral-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-900);
}

.modal__close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-neutral-400);
  padding: var(--spacing-1);
}

.modal__close:hover {
  color: var(--color-neutral-600);
}

.modal__body {
  padding: var(--spacing-4) var(--spacing-6);
}

.modal__footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-neutral-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
}

/* Progress Bars */
.progress {
  height: 8px;
  background-color: var(--color-neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background-color: var(--color-primary-600);
  border-radius: var(--radius-full);
  transition: width 0.3s;
}

.progress--sm {
  height: 4px;
}

.progress--lg {
  height: 12px;
}

/* Spinners */
.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--color-neutral-200);
  border-top-color: var(--color-primary-600);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

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

.spinner--sm {
  width: 1rem;
  height: 1rem;
}

.spinner--lg {
  width: 2.5rem;
  height: 2.5rem;
}

/* Tooltips */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: var(--spacing-1);
  background-color: var(--color-neutral-800);
  color: #ffffff;
  font-size: var(--text-xs);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: var(--z-tooltip);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ==========================================================================
   13. Overlays
   ========================================================================== */

/* Dropdowns */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--spacing-1);
  background-color: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  padding: var(--spacing-1) 0;
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
}

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

.dropdown__item {
  display: block;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  color: var(--color-neutral-700);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
}

.dropdown__item:hover {
  background-color: var(--color-neutral-100);
}

.dropdown__divider {
  height: 1px;
  background-color: var(--color-neutral-200);
  margin: var(--spacing-1) 0;
}

/* Drawers */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s;
}

.drawer-backdrop--active {
  opacity: 1;
  visibility: visible;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: 400px;
  max-width: 90vw;
  background-color: var(--color-neutral-0);
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: transform 0.3s;
  z-index: var(--z-modal);
  overflow-y: auto;
}

.drawer-backdrop--active .drawer {
  transform: translateX(0);
}

.drawer__header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-neutral-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer__body {
  padding: var(--spacing-4) var(--spacing-6);
}

.drawer__footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-neutral-200);
}

/* ==========================================================================
   14. Sliders
   ========================================================================== */

.slider {
  position: relative;
  overflow: hidden;
}

.slider__track {
  display: flex;
  transition: transform 0.5s ease;
}

.slider__slide {
  min-width: 100%;
  flex-shrink: 0;
}

.slider__slide img {
  width: 100%;
  display: block;
}

.slider__prev,
.slider__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: var(--radius-full);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 10;
  transition: background-color var(--transition-normal) ease;
}

.slider__prev:hover,
.slider__next:hover {
  background-color: #ffffff;
}

.slider__prev {
  left: var(--spacing-4);
}

.slider__next {
  right: var(--spacing-4);
}

.slider__dots {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-4);
}

.slider__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background-color: var(--color-neutral-300);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-normal) ease, transform var(--transition-normal) ease;
}

.slider__dot--active {
  background-color: var(--color-primary-600);
  transform: scale(1.25);
}

.slider__progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background-color: var(--color-primary-600);
  transition: width linear;
}

.slider__thumbs {
  display: flex;
  gap: var(--spacing-2);
  margin-top: var(--spacing-4);
  justify-content: center;
}

.slider__thumb {
  width: 60px;
  height: 40px;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.6;
  transition: border-color var(--transition-normal) ease, opacity var(--transition-normal) ease;
}

.slider__thumb--active {
  border-color: var(--color-primary-600);
  opacity: 1;
}

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

/* Multi-visible slider */
.slider[data-slider-visible] .slider__slide {
  min-width: auto;
}

.slider[data-slider-visible="2"] .slider__slide {
  flex-basis: calc(100% / 2);
}

.slider[data-slider-visible="3"] .slider__slide {
  flex-basis: calc(100% / 3);
}

.slider[data-slider-visible="4"] .slider__slide {
  flex-basis: calc(100% / 4);
}

.slider[data-slider-visible="5"] .slider__slide {
  flex-basis: calc(100% / 5);
}

/* ==========================================================================
   15. Masonry
   ========================================================================== */

.masonry {
  column-count: 3;
  column-gap: var(--spacing-6);
}

.masonry__item {
  break-inside: avoid;
  margin-bottom: var(--spacing-6);
}

@media (max-width: 768px) {
  .masonry {
    column-count: 1;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .masonry {
    column-count: 2;
  }
}

/* JS-powered masonry */
.masonry--js {
  position: relative;
}

.masonry--js .masonry__item {
  position: absolute;
}

/* ==========================================================================
   16. Utility Classes
   ========================================================================== */

/* Text Alignment */
.text-center {
  text-align: center;
}

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

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

/* Font Weights */
.font-bold {
  font-weight: var(--font-bold);
}

.font-semibold {
  font-weight: var(--font-semibold);
}

.font-medium {
  font-weight: var(--font-medium);
}

.font-normal {
  font-weight: var(--font-normal);
}

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

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

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

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

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

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

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

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

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

/* Flexbox */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

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

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

.gap-2 {
  gap: var(--spacing-2);
}

.gap-4 {
  gap: var(--spacing-4);
}

.gap-6 {
  gap: var(--spacing-6);
}

/* Display */
.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.inline-flex {
  display: inline-flex;
}

/* Sizing */
.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

/* Border Radius */
.rounded {
  border-radius: var(--radius-md);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-full {
  border-radius: var(--radius-full);
}

/* Shadows */
.shadow {
  box-shadow: var(--shadow-sm);
}

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

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* Borders */
.border {
  border: 1px solid var(--color-neutral-200);
}

.border-0 {
  border: 0;
}

/* Overflow */
.overflow-hidden {
  overflow: hidden;
}

.overflow-auto {
  overflow: auto;
}

/* Position */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

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

/* ---------- Footer ---------- */

.footer {
  background-color: #1a1a2e;
  color: hsla(0,0%,100%,.6);
  padding: 6rem 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer__brand .header__logo {
  color: #fff;
  margin-bottom: 1rem;
}

.footer__description {
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: 1.5rem;
  font-size: .85rem;
}

.footer__social {
  display: flex;
  gap: .5rem;
}

.footer__social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  border: 1px solid hsla(0,0%,100%,.15);
  color: hsla(0,0%,100%,.6);
  font-size: .8rem;
  text-decoration: none;
  transition: all .2s ease;
}

.footer__social-link:hover {
  background-color: #e8604c;
  border-color: #e8604c;
  color: #fff;
}

.footer__heading {
  font-size: .95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1.5rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer__link {
  font-size: .85rem;
  color: hsla(0,0%,100%,.6);
  text-decoration: none;
  transition: color .2s ease;
}

.footer__link:hover {
  color: #fff;
}

.footer__bottom {
  margin-top: 4rem;
  padding: 1.5rem 0;
  border-top: 1px solid hsla(0,0%,100%,.08);
  text-align: center;
  font-size: .8rem;
}

@media (max-width: 992px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}