@import url('tokens.css');

/* ==========================================================================
   Animations
   ========================================================================== */

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

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--black);
  background: var(--white);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 700;
  line-height: 1.3;
  color: var(--black);
  letter-spacing: var(--ls-tight);
}

h1 {
  font-size: var(--text-xl);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  margin-bottom: var(--s-lg);
}

h2 {
  font-size: var(--text-lg);
  letter-spacing: var(--ls-tight);
  text-transform: uppercase;
  margin-bottom: var(--s-md);
}

h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--s-sm);
}

p {
  margin: 0 0 var(--s-md);
  font-family: var(--font-sans);
}

.subtitle {
  margin: 0 0 var(--s-xl);
  color: var(--mid-gray);
  font-size: var(--text-base);
  font-family: var(--font-sans);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--s-lg) var(--s-lg);
}

/* ==========================================================================
   Navigation — Bauhaus style
   ========================================================================== */

nav {
  display: flex;
  gap: var(--s-sm);
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

nav a {
  text-decoration: none;
  color: var(--dark-gray);
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: var(--text-sm);
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  padding: var(--s-sm) var(--s-md);
  transition: all 0.15s ease;
  border: none;
}

nav a:hover {
  color: var(--black);
  background: none;
  border-bottom: 2px solid var(--black);
  text-decoration: none;
}

nav a.active {
  color: var(--white);
  background: var(--black);
  border: none;
}

/* Top-right nav style */
.nav-top-right {
  position: static;
  display: flex;
  gap: var(--s-sm);
  border: none;
  padding: 0;
  margin: 0;
}

.nav-top-right a {
  padding: var(--s-sm) var(--s-md);
  border: none;
  background: none;
}

.nav-top-right a:hover {
  background: none;
  border-bottom: 2px solid var(--black);
}

/* ==========================================================================
   Cards — Bauhaus: no shadows, structural borders
   ========================================================================== */

/* DEPRECATED: use the Card component with border="top" (renders
   .card-surface.card-surface--border-top in components.css) instead.
   Retained for remaining server-rendered template call-sites; remove
   once those migrate. */
.card {
  background: var(--white);
  border: none;
  border-top: 2px solid var(--black);
  border-radius: 0;
  padding: var(--s-lg) 0;
  box-shadow: none;
  margin-bottom: 0;
}

.card:last-child {
  border-bottom: 2px solid var(--black);
}

.card-header {
  margin-bottom: var(--s-md);
}

.card-title {
  font-family: var(--font-ui);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--black);
  margin: 0 0 var(--s-xs);
}

.card-description {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--mid-gray);
  margin: 0;
}

/* ==========================================================================
   Buttons — Bauhaus system
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-sm);
  padding: var(--s-sm) var(--s-md);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  line-height: 1.5;
  border-radius: 0;
  border: 2px solid var(--black);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  background: transparent;
  color: var(--black);
}

.btn:hover:not(:disabled) {
  background: var(--black);
  color: var(--white);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary CTA (yellow) */
.btn-primary {
  background: var(--yellow);
  border: 2px solid var(--yellow);
  color: var(--black);
}

.btn-primary:hover:not(:disabled) {
  background: var(--yellow-hover);
  border-color: var(--yellow-hover);
  color: var(--black);
}

/* Secondary (outlined) */
.btn-secondary {
  background: transparent;
  color: var(--black);
  border: 2px solid var(--black);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--black);
  color: var(--white);
}

/* Success */
.btn-success {
  background: var(--correct);
  color: var(--white);
  border: 2px solid var(--correct);
}

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

/* Danger */
.btn-danger {
  background: var(--red);
  color: var(--white);
  border: 2px solid var(--red);
}

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

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--mid-gray);
  border: none;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 400;
  text-transform: none;
  letter-spacing: var(--ls-tight);
}

.btn-ghost:hover:not(:disabled) {
  background: transparent;
  color: var(--dark-gray);
}

/* Small Button */
.btn-sm {
  padding: var(--s-xs) var(--s-sm);
  font-size: var(--text-xs);
}

/* Button Row */
.btn-row {
  display: flex;
  gap: var(--s-sm);
  flex-wrap: wrap;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--s-md);
}

label {
  display: block;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--mid-gray);
  margin-bottom: var(--s-xs);
}

input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  padding: var(--s-sm) var(--s-sm);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  color: var(--black);
  background: var(--white);
  border: 2px solid var(--black);
  border-radius: 0;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus {
  outline: none;
  border-color: var(--blue);
}

input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--black);
  cursor: pointer;
  border-radius: 0;
}

.help-text {
  margin-top: var(--s-xs);
  font-size: var(--text-xs);
  color: var(--mid-gray);
  font-family: var(--font-sans);
}

.section-divider {
  margin: var(--s-xl) 0;
  border: none;
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   Tables
   ========================================================================== */

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

th, td {
  padding: var(--s-sm) var(--s-md);
  text-align: left;
  border-bottom: 1px solid var(--warm-gray);
}

th {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--mid-gray);
  background: var(--white);
}

tr:hover td {
  background: var(--warm-gray);
}

/* ==========================================================================
   Alerts & Messages
   ========================================================================== */

/* `.alert` is the React/Preact transient-status component (post-action
   toasts, form errors). Inline-block + fit-content so it hugs the
   message instead of stretching the panel; keeps the brutalist
   left-border accent but at a lighter weight. `.message` (below) is
   kept on the original chunky path for legacy HTMX templates. */
.alert {
  display: none;
  width: fit-content;
  max-width: 100%;
  padding: var(--s-sm) var(--s-md);
  margin-bottom: var(--s-sm);
  border-radius: 0;
  border-left: 3px solid;
  font-size: var(--text-sm);
  font-family: var(--font-sans);
}

.message {
  padding: var(--s-md);
  border-radius: 0;
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  margin-bottom: var(--s-md);
  display: none;
  border-left: 4px solid;
}

.alert.visible,
.message.visible {
  display: block;
}

.alert-success,
.message.success {
  background: var(--bg-correct);
  border-left-color: var(--correct);
  color: var(--black);
}

.alert-error,
.message.error {
  background: var(--bg-error);
  border-left-color: var(--red);
  color: var(--black);
}

.alert-warning {
  background: var(--bg-pending);
  border-left-color: var(--yellow);
  color: var(--black);
}

.alert-info {
  background: var(--color-info-bg);
  border-left-color: var(--blue);
  color: var(--black);
}

/* ==========================================================================
   Status Badges
   ========================================================================== */

.status {
  display: inline-flex;
  align-items: center;
  padding: var(--s-xs) var(--s-sm);
  border-radius: 0;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
}

.status.pending {
  background: var(--bg-pending);
  color: var(--black);
}

.status.running {
  background: var(--color-info-bg);
  color: var(--blue);
}

.status.completed {
  background: var(--bg-correct);
  color: var(--correct);
}

.status.failed {
  background: var(--bg-error);
  color: var(--red);
}

/* ==========================================================================
   Progress Bars
   ========================================================================== */

.progress-bar {
  height: 8px;
  background: var(--warm-gray);
  border-radius: 0;
  overflow: hidden;
  margin-top: var(--s-sm);
}

.progress-fill {
  height: 100%;
  background: var(--correct);
  border-radius: 0;
  transition: width 0.3s ease;
}

.progress-text {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--mid-gray);
  margin-top: var(--s-xs);
}

/* ==========================================================================
   Stat Cards
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--s-md);
  margin-bottom: var(--s-lg);
}

.stat-card {
  background: var(--white);
  border: 2px solid var(--black);
  border-radius: 0;
  padding: var(--s-lg);
  box-shadow: none;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: var(--ls-normal);
  color: var(--dark-gray);
  margin-bottom: var(--s-sm);
}

.stat-value {
  font-family: var(--font-ui);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--black);
  line-height: 1;
}

.stat-value.success {
  color: var(--correct);
}

.stat-value.error {
  color: var(--red);
}

.stat-delta {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 700;
  margin-top: var(--s-sm);
}

.stat-delta--up {
  color: var(--correct);
}

.stat-delta--down {
  color: var(--red);
}

.stat-delta--flat {
  color: var(--mid-gray);
}

.stat-hint {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--dark-gray);
  margin-top: var(--s-sm);
}

/* ==========================================================================
   Chart Container
   ========================================================================== */

.chart-container {
  background: var(--white);
  border: 2px solid var(--black);
  border-radius: 0;
  padding: var(--s-xl);
  box-shadow: none;
  margin-bottom: var(--s-lg);
}

.chart-title {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--black);
  margin-bottom: var(--s-md);
}

/* ==========================================================================
   Filter Bar — shared groups (dashboard-only classes moved to dashboard.css)
   ========================================================================== */

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
}

.filter-group label {
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: var(--text-xs);
  letter-spacing: var(--ls-wide);
  color: var(--mid-gray);
  margin: 0;
}

.filter-group input[type="date"] {
  padding: var(--s-sm);
  font-size: var(--text-sm);
  width: auto;
  box-sizing: border-box;
  height: 36px;
}

/* Chip-style checkbox labels (shared with trainer) */
.filter-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: var(--s-sm);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  text-transform: uppercase;
  color: var(--dark-gray);
  cursor: pointer;
  user-select: none;
  padding: var(--s-xs) var(--s-md);
  margin: 0;
  border: 2px solid var(--mid-gray);
  border-radius: 0;
  transition: all 0.15s ease;
  letter-spacing: var(--ls-normal);
}

.filter-checkbox-label:hover {
  border-color: var(--black);
  color: var(--black);
}

.filter-checkbox-label:has(input:checked) {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

.filter-checkbox-label input[type="checkbox"] {
  display: none;
}

/* ==========================================================================
   Delete Button
   ========================================================================== */

.btn-delete {
  background: none;
  border: none;
  color: var(--mid-gray);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: var(--s-xs) var(--s-sm);
  border-radius: 0;
  transition: all 0.15s ease;
}

.btn-delete:hover {
  background: var(--bg-error);
  color: var(--red);
}

/* ==========================================================================
   Links
   ========================================================================== */

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  border-bottom: 1px solid var(--blue);
  text-decoration: none;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--s-xs);
  margin-bottom: var(--s-md);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  color: var(--mid-gray);
}

.back-link:hover {
  color: var(--blue);
  border-bottom: none;
}

/* ==========================================================================
   HTMX Loading States
   ========================================================================== */

.htmx-indicator {
  opacity: 0;
  transition: opacity 0.2s ease;
}

.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  opacity: 1;
}

.htmx-swapping {
  opacity: 0.5;
  transition: opacity 0.1s ease-out;
}

.htmx-settling {
  opacity: 1;
  transition: opacity 0.15s ease-in;
}

/* ==========================================================================
   Keyboard Shortcuts
   ========================================================================== */

kbd {
  display: inline-block;
  padding: 0 4px;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  background: var(--warm-gray);
  border: 1px solid currentColor;
  border-radius: 0;
  color: inherit;
  opacity: 0.5;
  box-shadow: none;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.text-muted { color: var(--mid-gray); }
.text-primary { color: var(--primary); }

.section-description {
  color: var(--text-muted);
  font-size: var(--text-base);
}
.text-success { color: var(--correct); }
.text-error { color: var(--red); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.font-ui { font-family: var(--font-ui); }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.font-semibold { font-weight: 600; }

.mt-2 { margin-top: var(--s-sm); }
.mt-4 { margin-top: var(--s-md); }
.mb-2 { margin-bottom: var(--s-sm); }
.mb-4 { margin-bottom: var(--s-md); }

.progress-section {
  margin-top: var(--s-lg);
}

.danger-title { color: var(--error); }
.table-placeholder { text-align: center; color: var(--text-muted); }
.table-scroll { overflow-x: auto; }
.progress-fill.danger { background: var(--red); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-3 { margin-top: 12px; }
.mt-8 { margin-top: var(--s-xl); }

.inline-spinner {
  display: inline-block;
  width: 0.85em;
  height: 0.85em;
  border: 2px solid var(--mid-gray-light);
  border-top-color: var(--mid-gray);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

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

/* ==========================================================================
   Compact Link Navigation
   ========================================================================== */

.nav-link-compact {
  display: flex;
  gap: var(--s-sm);
  align-items: center;
  margin-bottom: 0;
}

.nav-link-compact-item {
  color: var(--dark-gray);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--s-sm);
  padding: var(--s-sm) var(--s-md);
  border: none;
  border-radius: 0;
  transition: all 0.15s ease;
}

.nav-link-compact-item:hover {
  color: var(--black);
  border-bottom: none;
}

/* Demo mode banner */
.demo-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--yellow);
  color: var(--black);
  text-align: center;
  padding: 8px 16px;
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  border-bottom: 3px solid var(--black);
}

.demo-banner a {
  color: inherit;
  font-weight: 700;
  border-bottom: 1px solid var(--black);
}

body:has(.demo-banner) {
  padding-top: 38px;
}

/* ==========================================================================
   Shared Bauhaus Header
   ========================================================================== */

.trainer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-md) var(--s-lg);
  border-bottom: 2px solid var(--black);
  margin-bottom: var(--s-lg);
}

.trainer-header-left {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
}

.trainer-logo {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
  font-family: var(--font-ui);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--black);
  margin: 0;
}

.trainer-logo-icon {
  width: 20px;
  height: 20px;
  background: var(--red);
  flex-shrink: 0;
}

.trainer-nav {
  display: flex;
  gap: 0;
  align-items: center;
  border: none;
  padding: 0;
  margin: 0;
}

.nav-links {
  display: flex;
  gap: 0;
  align-items: center;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  background: none;
  border: 2px solid var(--black);
  padding: 6px 8px;
  cursor: pointer;
  width: 36px;
  height: 32px;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--black);
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 768px) {
  .nav-hamburger {
    display: flex;
  }

  .trainer-nav {
    position: relative;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    background: var(--white);
    border: 2px solid var(--black);
    z-index: 100;
    min-width: 180px;
    margin-top: var(--s-xs);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links .trainer-nav-link {
    width: 100%;
    padding: var(--s-sm) var(--s-md);
    border-bottom: 1px solid var(--warm-gray);
  }

  .nav-links .trainer-nav-link:last-child {
    border-bottom: none;
  }

  .trainer-header {
    flex-wrap: wrap;
  }
}

.trainer-nav-link {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: var(--ls-normal);
  text-transform: uppercase;
  color: var(--dark-gray);
  text-decoration: none;
  padding: var(--s-sm) var(--s-md);
  transition: all 0.15s ease;
  border: none;
}

.trainer-nav-link:hover {
  color: var(--black);
  background: var(--warm-gray);
  border-bottom: none;
  text-decoration: none;
}

.trainer-nav-link.active {
  background: var(--black);
  color: var(--white);
}

.nav-user {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--mid-gray);
  padding: var(--s-sm) var(--s-md);
  max-width: 12em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-logout {
  display: inline-block;
  margin: 0;
}

.nav-logout button.trainer-nav-link {
  background: transparent;
  font: inherit;
  cursor: pointer;
}

/* ==========================================================================
   Modal Overlay — shared pattern
   ========================================================================== */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal-overlay.visible {
  display: flex;
}

.modal {
  background: var(--white);
  border: 3px solid var(--black);
  border-radius: 0;
  padding: var(--s-xl);
  min-width: 320px;
  max-width: 480px;
  box-shadow: none;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--s-md);
}

.modal-header h3 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--text-xl);
  cursor: pointer;
  color: var(--mid-gray);
  padding: 0 var(--s-xs);
  line-height: 1;
}

.modal-close:hover {
  color: var(--black);
}

/* ==========================================================================
   Loading — shared pattern (AsyncBoundary canonical markup)
   ========================================================================== */

.loading {
  text-align: center;
  padding: var(--s-xl) var(--s-lg);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* ==========================================================================
   Empty State — shared pattern
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: var(--s-2xl) var(--s-xl);
  max-width: 500px;
  margin: 0 auto;
}

.empty-state-icon {
  color: var(--mid-gray);
  margin-bottom: var(--s-lg);
  opacity: 0.5;
}

.empty-state-title {
  font-family: var(--font-ui);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--black);
  margin: 0 0 var(--s-sm) 0;
}

.empty-state-message {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--mid-gray);
  margin: 0 0 var(--s-lg) 0;
  line-height: 1.6;
}

.empty-state-actions {
  display: flex;
  gap: var(--s-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   Filter Chips — unified toggle pattern
   ========================================================================== */

.chip {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: var(--ls-normal);
  padding: var(--s-xs) var(--s-md);
  border: 2px solid var(--mid-gray);
  background: transparent;
  color: var(--dark-gray);
  cursor: pointer;
  border-radius: 0;
  transition: all 0.15s ease;
}

.chip:hover {
  border-color: var(--black);
  color: var(--black);
}

.chip.active {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

/* Chip as label wrapping a hidden input */
.chip-label {
  display: inline-flex;
  align-items: center;
  gap: var(--s-sm);
  cursor: pointer;
  user-select: none;
}

.chip-label input[type="checkbox"],
.chip-label input[type="radio"] {
  display: none;
}

.chip-label:has(input:checked) .chip {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

/* ==========================================================================
   Additional Utility Classes
   ========================================================================== */

.hidden { display: none !important; }
.gap-sm { gap: var(--s-sm); }
.gap-md { gap: var(--s-md); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }

/* ==========================================================================
   Field Validation Indicators
   ========================================================================== */

.field-validation {
  display: block;
  min-height: 1.25em;
  font-size: var(--text-sm);
  margin-top: 4px;
}

.field-validation:empty { display: none; }
.field-validation.checking { color: var(--text-muted, var(--mid-gray)); }
.field-validation.valid { color: var(--success, var(--correct)); }
.field-validation.invalid { color: var(--error, var(--red)); }

.field-validation.checking::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid var(--text-muted, var(--mid-gray));
  border-top-color: transparent;
  border-radius: 50%;
  animation: field-validation-spin 0.6s linear infinite;
  margin-right: 6px;
  vertical-align: middle;
}

.field-validation.valid::before { content: '✓ '; }
.field-validation.invalid::before { content: '✗ '; }

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

/* Status dot indicator */
.status-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  vertical-align: middle;
}

.status-dot--success { background: var(--color-success); }
.status-dot--error { background: var(--color-error); }

.engine-status-row {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
}

.engine-details {
  margin-top: var(--s-md);
  border-collapse: collapse;
}

.engine-details td {
  padding: var(--s-sm) var(--s-lg) var(--s-sm) var(--s-md);
  border-bottom: 1px solid var(--mid-gray-light);
}

.engine-details td:first-child {
  color: var(--text-muted);
}

/* Nav review-queue badge */
.nav-badge {
  display: inline-block;
  margin-left: var(--s-xs);
  padding: 0 6px;
  font-size: var(--text-xs);
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
  background: var(--red);
  border: 2px solid var(--border-strong);
  vertical-align: middle;
}

.nav-badge[hidden] {
  display: none;
}