/**
 * AIPA License Manager — Design System
 * Azure / Microsoft Fluent Design inspired tokens and components
 */

/* 1. CSS Custom Properties */

:root {
  /* Primary blue scale (Azure) */
  --color-navy-950: #001B3D;
  --color-navy-900: #002050;
  --color-navy-800: #003070;
  --color-navy-700: #004578;
  --color-navy-600: #005A9E;
  --color-navy-500: #0078D4;
  --color-navy-400: #2B88D8;

  /* Accent (Azure blue) */
  --color-accent: #0078D4;
  --color-accent-hover: #106EBE;
  --color-accent-muted: #2B88D8;
  --color-accent-subtle: rgba(0, 120, 212, 0.08);

  /* Neutrals (Fluent) */
  --color-white: #ffffff;
  --color-gray-50: #FAF9F8;
  --color-gray-100: #F3F2F1;
  --color-gray-200: #EDEBE9;
  --color-gray-300: #C8C6C4;
  --color-gray-400: #A19F9D;
  --color-gray-500: #8A8886;
  --color-gray-600: #605E5C;
  --color-gray-700: #484644;
  --color-gray-800: #323130;
  --color-gray-900: #201F1E;

  /* Semantic — success */
  --color-success: #107C10;
  --color-success-hover: #0B6A0B;
  --color-success-bg: rgba(16, 124, 16, 0.08);
  --color-success-border: rgba(16, 124, 16, 0.3);

  /* Semantic — warning */
  --color-warning: #FFB900;
  --color-warning-bg: rgba(255, 185, 0, 0.1);
  --color-warning-border: rgba(255, 185, 0, 0.35);

  /* Semantic — danger */
  --color-danger: #D13438;
  --color-danger-hover: #A4262C;
  --color-danger-bg: rgba(209, 52, 56, 0.08);
  --color-danger-border: rgba(209, 52, 56, 0.3);

  /* Semantic — info */
  --color-info: #0078D4;
  --color-info-bg: rgba(0, 120, 212, 0.08);

  /* Surfaces */
  --color-bg: var(--color-gray-100);
  --color-bg-elevated: var(--color-white);
  --color-bg-muted: var(--color-gray-50);
  --color-border: var(--color-gray-200);
  --color-border-strong: var(--color-gray-300);

  /* Text */
  --color-text: var(--color-gray-800);
  --color-text-secondary: var(--color-gray-600);
  --color-text-muted: var(--color-gray-400);
  --color-text-inverse: var(--color-white);

  /* Spacing scale (4px base) */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-7: 1.75rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Typography (Fluent: Segoe UI) */
  --font-sans: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', sans-serif;
  --font-mono: 'Cascadia Code', 'SF Mono', Consolas, 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;
  --text-5xl: 3rem;

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

  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;
  --tracking-wider: 0.04em;
  --tracking-widest: 0.08em;

  /* Shadows (Fluent depth) */
  --shadow-xs: 0 1.6px 3.6px 0 rgba(0,0,0,.132), 0 0.3px 0.9px 0 rgba(0,0,0,.108);
  --shadow-sm: 0 1.6px 3.6px 0 rgba(0,0,0,.132), 0 0.3px 0.9px 0 rgba(0,0,0,.108);
  --shadow-md: 0 3.2px 7.2px 0 rgba(0,0,0,.132), 0 0.6px 1.8px 0 rgba(0,0,0,.108);
  --shadow-lg: 0 6.4px 14.4px 0 rgba(0,0,0,.132), 0 1.2px 3.6px 0 rgba(0,0,0,.108);
  --shadow-xl: 0 12.8px 28.8px 0 rgba(0,0,0,.132), 0 2.4px 7.2px 0 rgba(0,0,0,.108);
  --shadow-inner: inset 0 1px 2px rgba(0,0,0,.06);

  /* Border radius (Fluent: minimal) */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-xl: 8px;
  --radius-2xl: 8px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --duration-fast: 100ms;
  --duration-normal: 167ms;
  --duration-slow: 250ms;
  --transition-color: color var(--duration-normal) var(--ease-default);
  --transition-bg: background-color var(--duration-normal) var(--ease-default);
  --transition-border: border-color var(--duration-normal) var(--ease-default);
  --transition-shadow: box-shadow var(--duration-normal) var(--ease-default);
  --transition-transform: transform var(--duration-normal) var(--ease-default);
  --transition-opacity: opacity var(--duration-normal) var(--ease-default);
  --transition-all: all var(--duration-normal) var(--ease-default);

  /* Z-index scale */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-toast: 700;
  --z-tooltip: 800;

  /* Focus ring */
  --focus-ring-width: 2px;
  --focus-ring-offset: 1px;
  --focus-ring-color: var(--color-accent);
}


/* 2. Reset / Base */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  font-weight: var(--font-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition-color);
}
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

/* 3. Typography */

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

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

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

.text-body {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
}
.text-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}
.text-small, small { font-size: var(--text-sm); line-height: var(--leading-normal); }
.text-caption {
  font-size: var(--text-xs);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}
.text-eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

/* 4. Layout utilities */

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container { padding-left: var(--space-6); padding-right: var(--space-6); }
}

.section { padding-top: var(--space-12); padding-bottom: var(--space-12); }

@media (min-width: 768px) {
  .section { padding-top: var(--space-16); padding-bottom: var(--space-16); }
}

.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* 5. Button system */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: var(--font-semibold);
  line-height: var(--leading-none);
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: var(--transition-bg), var(--transition-border), var(--transition-color), var(--transition-shadow);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 var(--focus-ring-offset) var(--color-bg-elevated),
    0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color);
}

.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }

.btn-primary {
  color: var(--color-text-inverse);
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}
.btn-primary:active:not(:disabled) { background: var(--color-navy-600); }

.btn-secondary {
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
}
.btn-secondary:active:not(:disabled) { background: var(--color-gray-100); }

.btn-ghost { color: var(--color-text-secondary); background: transparent; border-color: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--color-gray-100); color: var(--color-text); }

.btn-cta {
  color: var(--color-text-inverse);
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-cta:hover:not(:disabled) {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}
.btn-cta:active:not(:disabled) { background: var(--color-navy-600); }

.btn-danger { color: var(--color-text-inverse); background: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover:not(:disabled) { background: var(--color-danger-hover); border-color: var(--color-danger-hover); }

.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }
.btn-md { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.btn-lg { padding: var(--space-3) var(--space-5); font-size: var(--text-base); }
.btn-xl { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.btn-full { width: 100%; }

/* 6. Card system */

.card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.card-elevated {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.card-interactive {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
  transition: var(--transition-shadow), var(--transition-border);
  cursor: pointer;
}

.card-interactive:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-gray-300);
}

.card-interactive:active { box-shadow: var(--shadow-sm); }

.card-glass {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-sm);
}

.card-bordered {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  box-shadow: none;
}

/* 7. Form system */

.form-group { margin-bottom: var(--space-5); }
.form-group:last-child { margin-bottom: 0; }
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.form-input, .form-textarea, .form-select {
  display: block;
  width: 100%;
  padding: 6px 12px;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: var(--transition-border), var(--transition-shadow);
}

.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-muted); }

.form-input:hover:not(:disabled):not([readonly]),
.form-textarea:hover:not(:disabled):not([readonly]),
.form-select:hover:not(:disabled) {
  border-color: var(--color-gray-500);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: none;
}

.form-input:disabled, .form-textarea:disabled, .form-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background-color: var(--color-gray-100);
}
.form-textarea { min-height: 120px; resize: vertical; }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23605E5C' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

.form-checkbox, .form-radio {
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  accent-color: var(--color-accent);
  cursor: pointer;
  vertical-align: middle;
}

.form-checkbox:focus-visible, .form-radio:focus-visible {
  outline: 2px solid var(--focus-ring-color);
  outline-offset: 1px;
}

.form-group.is-error .form-input,
.form-group.is-error .form-textarea,
.form-group.is-error .form-select {
  border-color: var(--color-danger);
}

.form-group.is-error .form-input:focus,
.form-group.is-error .form-textarea:focus,
.form-group.is-error .form-select:focus {
  box-shadow: 0 0 0 1px var(--color-danger);
}

.form-hint {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.form-error {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-danger);
  font-weight: var(--font-medium);
}
.form-success {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-success);
  font-weight: var(--font-medium);
}
.field-group { display: flex; flex-direction: column; gap: var(--space-4); }

@media (min-width: 768px) {
  .field-group.row { flex-direction: row; align-items: flex-end; }
  .field-group.row .form-group { flex: 1; margin-bottom: 0; }
}

/* 8. Badge system */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}

.badge-primary {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border-color: transparent;
}
.badge-success {
  color: var(--color-success-hover);
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
}
.badge-warning {
  color: #835C00;
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
}
.badge-danger {
  color: var(--color-danger);
  background: var(--color-danger-bg);
  border-color: var(--color-danger-border);
}
.badge-outline { color: var(--color-text-secondary); background: transparent; border-color: var(--color-border-strong); }
.badge-pill { border-radius: var(--radius-full); padding-left: var(--space-3); padding-right: var(--space-3); }

/* 9. Table system */

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}

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

.table thead th {
  padding: 8px 12px;
  font-size: 11px;
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-border);
}

.table tbody td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

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

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

.table tbody tr:hover { background: var(--color-gray-50); }

.table-striped tbody tr:nth-child(even) { background: var(--color-gray-50); }
.table-striped tbody tr:nth-child(even):hover { background: var(--color-gray-100); }

.table th.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: var(--space-8);
}

.table th.sortable:hover {
  color: var(--color-text);
  background: var(--color-gray-100);
}

.table th.sortable::after {
  content: "";
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--color-gray-400);
  opacity: 0.4;
}

.table th.sortable.asc::after {
  border-top: none;
  border-bottom: 5px solid var(--color-accent);
  opacity: 1;
}

.table th.sortable.desc::after {
  border-top: 5px solid var(--color-accent);
  border-bottom: none;
  opacity: 1;
}

/* 10. Modal system */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-out),
    visibility var(--duration-slow) var(--ease-out);
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  position: relative;
  z-index: var(--z-modal);
  width: 100%;
  max-width: 32rem;
  max-height: min(90vh, 720px);
  display: flex;
  flex-direction: column;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xl);
  transform: translateY(8px);
  opacity: 0;
  transition: transform var(--duration-slow) var(--ease-out),
    opacity var(--duration-slow) var(--ease-out);
}

.modal-overlay.is-open .modal-content {
  transform: translateY(0);
  opacity: 1;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-body {
  padding: 0;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

/* 11. Toast / notification system */

.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  max-width: 22rem;
  padding: 12px 16px;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: toastIn var(--duration-slow) var(--ease-out) forwards;
}

.toast.is-dismissing { animation: toastOut var(--duration-normal) var(--ease-in) forwards; }

.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-info); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(4px); }
}

/* 12. Loading states */

.spinner {
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--color-gray-200);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--color-gray-200);
  border-radius: var(--radius-md);
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.55) 50%, transparent 100%);
  animation: shimmer 1.4s ease-in-out infinite;
}

.skeleton-text { height: 0.875rem; margin-bottom: var(--space-2); border-radius: var(--radius-sm); }
.skeleton-text:last-child { width: 65%; margin-bottom: 0; }
.skeleton-circle { width: 3rem; height: 3rem; border-radius: 50%; flex-shrink: 0; }
.skeleton-card { min-height: 140px; border-radius: var(--radius-md); }

/* 13. Transitions and animations */

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.98); } to { opacity: 1; transform: scale(1); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

.animate-fade-in { animation: fadeIn var(--duration-slow) var(--ease-out) forwards; }
.animate-slide-up { animation: slideUp var(--duration-slow) var(--ease-out) forwards; }
.animate-slide-down { animation: slideDown var(--duration-slow) var(--ease-out) forwards; }
.animate-scale-in { animation: scaleIn var(--duration-slow) var(--ease-out) forwards; }
.animate-pulse { animation: pulse 1.5s var(--ease-default) infinite; }

/* 14. Breakpoints */

@media (min-width: 480px) {
  :root { --section-compact: var(--space-8); }
}

@media (min-width: 768px) {
  h1 { font-size: var(--text-5xl); }
}

@media (min-width: 1024px) {
  .modal-content.modal-wide { max-width: 42rem; }
}

@media (min-width: 1280px) {
  .container { max-width: 1200px; }
}

/* 15. Utility classes */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-7 { margin-bottom: var(--space-7); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); }
.mt-8 { margin-top: var(--space-8); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.p-7 { padding: var(--space-7); }
.p-8 { padding: var(--space-8); }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }

.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.w-full { width: 100%; }
.rounded { border-radius: var(--radius-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.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;
}

/* 16. SPA route transitions */

.route-transition-out {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--duration-normal) var(--ease-in), transform var(--duration-normal) var(--ease-in);
  pointer-events: none;
}

.route-transition-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

/* 17. Scroll reveal */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .route-transition-out, .route-transition-in { transition: none; opacity: 1; transform: none; }
  .modal-content { transition: none; }
}