/* Reusable UI components */

/* ??? Library chrome ??? */
.ui-lib-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ui-space-4);
  height: 56px;
  padding: 0 var(--ui-space-6);
  background: var(--ui-surface);
  border-bottom: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow-sm);
}

.ui-lib-brand {
  display: flex;
  align-items: center;
  gap: var(--ui-space-3);
  min-width: 0;
}

.ui-lib-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--ui-radius-md);
  background: var(--ui-primary);
  color: var(--ui-text-inverse);
  font-weight: 800;
  font-size: var(--ui-fs-sm);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.ui-lib-logo--auth {
  width: 40px;
  height: 40px;
  font-size: var(--ui-fs-base);
  background: var(--ui-surface);
  color: var(--ui-primary);
}

.ui-lib-logo--shell {
  width: 28px;
  height: 28px;
  font-size: 10px;
}

.ui-lib-logo--drawer {
  width: 24px;
  height: 24px;
  font-size: 9px;
}

.ui-lib-title {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
}

.ui-lib-title strong {
  font-size: 13px;
  font-weight: 700;
  line-height: 18px;
  color: var(--ui-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ui-lib-title span {
  font-size: 11px;
  font-weight: 500;
  color: var(--ui-text-muted);
  letter-spacing: 0.04em;
}

.ui-lib-utils {
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
}

.ui-lib-user {
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  margin-left: var(--ui-space-2);
  padding-left: var(--ui-space-3);
  border-left: 1px solid var(--ui-border);
  font-size: var(--ui-fs-sm);
  color: var(--ui-text-secondary);
}

.ui-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ui-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.ui-lib-main {
  max-width: var(--ui-content-max);
  margin: 0 auto;
  padding: var(--ui-space-6) var(--ui-space-5) var(--ui-space-10);
}

/* Board-like dense mosaic (closer to reference sheet) */
.ui-board {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--ui-space-5);
  align-items: start;
}

.ui-board > .ui-section {
  margin-bottom: 0;
}

.ui-board > .span-12 { grid-column: span 12; }
.ui-board > .span-8 { grid-column: span 8; }
.ui-board > .span-7 { grid-column: span 7; }
.ui-board > .span-6 { grid-column: span 6; }
.ui-board > .span-5 { grid-column: span 5; }
.ui-board > .span-4 { grid-column: span 4; }
.ui-board > .span-3 { grid-column: span 3; }

@media (max-width: 1023px) {
  .ui-board { grid-template-columns: 1fr; }
  .ui-board > [class*="span-"] { grid-column: span 1; }
}

.ui-section {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  box-shadow: var(--ui-shadow-sm);
  padding: var(--ui-space-4);
  margin-bottom: var(--ui-space-5);
}

.ui-section-head {
  display: flex;
  align-items: baseline;
  gap: var(--ui-space-3);
  margin-bottom: var(--ui-space-4);
  padding-bottom: var(--ui-space-3);
  border-bottom: 1px solid var(--ui-border);
}

.ui-section-num {
  font-size: var(--ui-fs-caption);
  font-weight: 700;
  color: var(--ui-primary);
  letter-spacing: 0.06em;
}

.ui-section-head h2 {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
}

.ui-section-grid {
  display: grid;
  gap: var(--ui-space-5);
}

.ui-section-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.ui-section-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.ui-section-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.ui-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ui-space-2);
}

.ui-stack {
  display: flex;
  flex-direction: column;
  gap: var(--ui-space-3);
}

.ui-label-row {
  display: flex;
  flex-direction: column;
  gap: var(--ui-space-2);
}

.ui-demo-label {
  font-size: var(--ui-fs-caption);
  font-weight: 600;
  color: var(--ui-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ??? Colors ??? */
.ui-swatch-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--ui-space-3);
}

.ui-swatch {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ui-swatch-chip {
  height: 48px;
  border-radius: var(--ui-radius-md);
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: var(--ui-shadow-sm);
}

.ui-swatch-meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.ui-swatch-meta strong {
  font-size: 12px;
  font-weight: 600;
}

.ui-swatch-meta span {
  font-size: 11px;
  color: var(--ui-text-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.ui-neutral-row {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: var(--ui-space-2);
  margin-top: var(--ui-space-4);
}

.ui-neutral-row .ui-swatch-chip { height: 36px; }

/* ??? Icons ??? */
.ui-icon-grid {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: var(--ui-space-3);
}

.ui-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: var(--ui-space-3) var(--ui-space-2);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-md);
  background: var(--ui-surface);
}

.ui-icon-item span {
  font-size: 10px;
  color: var(--ui-text-muted);
  text-align: center;
}

.ui-icon {
  width: var(--ui-icon-md);
  height: var(--ui-icon-md);
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.ui-icon.lg { width: var(--ui-icon-lg); height: var(--ui-icon-lg); }
.ui-icon.sm { width: var(--ui-icon-sm); height: var(--ui-icon-sm); }

/* ??? Buttons ??? */
.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: var(--ui-btn-h-md);
  padding: 0 14px;
  border-radius: var(--ui-radius-md);
  border: 1px solid transparent;
  background: var(--ui-n-100);
  color: var(--ui-text-primary);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  box-shadow: var(--ui-shadow-sm);
  transition: background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease;
}

.ui-btn:hover { filter: brightness(0.97); }
.ui-btn:active { transform: translateY(0.5px); }
.ui-btn:focus-visible { box-shadow: var(--ui-focus-ring); }

.ui-btn--primary {
  background: var(--ui-primary);
  border-color: var(--ui-primary);
  color: #fff;
}
.ui-btn--primary:hover { background: var(--ui-primary-hover); border-color: var(--ui-primary-hover); }

.ui-btn--secondary {
  background: var(--ui-surface);
  border-color: var(--ui-border-strong);
  color: var(--ui-n-700);
}
.ui-btn--secondary:hover { background: var(--ui-n-50); }

.ui-btn--success {
  background: var(--ui-success);
  border-color: var(--ui-success);
  color: #fff;
}
.ui-btn--success:hover { background: var(--ui-success-hover); }

.ui-btn--warning {
  background: var(--ui-warning);
  border-color: var(--ui-warning);
  color: #fff;
}
.ui-btn--warning:hover { background: var(--ui-warning-hover); }

.ui-btn--danger {
  background: var(--ui-danger);
  border-color: var(--ui-danger);
  color: #fff;
}
.ui-btn--danger:hover { background: var(--ui-danger-hover); }

.ui-btn--ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--ui-n-700);
}
.ui-btn--ghost:hover { background: var(--ui-n-100); }

.ui-btn--text {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--ui-n-700);
  padding-inline: 8px;
}
.ui-btn--text:hover { color: var(--ui-primary); background: transparent; }

.ui-btn--link {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--ui-primary);
  padding-inline: 4px;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ui-btn--sm { height: var(--ui-btn-h-sm); padding: 0 var(--ui-btn-pad-x-sm); font-size: var(--ui-fs-sm); }
.ui-btn--lg { height: var(--ui-btn-h-lg); padding: 0 var(--ui-btn-pad-x-lg); font-size: var(--ui-fs-base); }

.ui-btn--icon {
  width: var(--ui-btn-h-md);
  padding: 0;
  border-radius: var(--ui-radius-md);
}
.ui-btn--icon.ui-btn--sm { width: var(--ui-btn-h-sm); }
.ui-btn--icon.ui-btn--lg { width: var(--ui-btn-h-lg); }
.ui-btn--icon.rounded { border-radius: 50%; }

.ui-btn:disabled,
.ui-btn[aria-disabled="true"],
.ui-btn--disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  background: var(--ui-n-100);
  border-color: var(--ui-border);
  color: var(--ui-n-400);
}

.ui-btn.is-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.ui-btn.is-loading::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ui-spin .7s linear infinite;
}
.ui-btn--secondary.is-loading::after,
.ui-btn--ghost.is-loading::after,
.ui-btn--text.is-loading::after {
  border-color: rgba(0,0,0,.15);
  border-top-color: var(--ui-primary);
}

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

.ui-icon-btn-badge {
  position: relative;
}
.ui-icon-btn-badge .ui-notif-dot {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--ui-danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
}

/* ??? Cards ??? */
.ui-card {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  box-shadow: var(--ui-shadow-md);
  padding: var(--ui-space-4);
}

.rail-crossing-card {
  display: flex;
  flex-direction: column;
  gap: var(--ui-space-3);
  min-width: 220px;
}

.rail-crossing-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--ui-space-2);
}

.rail-crossing-card__title {
  font-size: 14px;
  font-weight: 700;
  line-height: 20px;
}

.rail-crossing-card__meta {
  font-size: 12px;
  color: var(--ui-text-secondary);
}

.rail-violation-card,
.ui-stat-card {
  min-width: 160px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ui-stat-card__label {
  font-size: 12px;
  color: var(--ui-text-secondary);
  font-weight: 500;
}

.ui-stat-card__value {
  font-size: 28px;
  line-height: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.ui-stat-card__trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
}
.ui-stat-card__trend.up { color: var(--ui-danger); }
.ui-stat-card__trend.down { color: var(--ui-success); }

.ui-stat-card__spark {
  height: 28px;
  margin-top: 4px;
}

.rail-signal-status {
  display: flex;
  align-items: center;
  gap: var(--ui-space-4);
  padding: var(--ui-space-4);
  min-width: 200px;
}

.rail-signal-lights {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 6px;
  background: #111;
  border-radius: 8px;
}

.rail-signal-lights span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #333;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
}
.rail-signal-lights span.on-red { background: #EF4444; box-shadow: 0 0 8px rgba(239,68,68,.7); }
.rail-signal-lights span.on-amber { background: #F59E0B; box-shadow: 0 0 8px rgba(245,158,11,.7); }
.rail-signal-lights span.on-green { background: #19A34A; box-shadow: 0 0 8px rgba(25,163,74,.7); }

.rail-signal-status__label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ui-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.rail-signal-status__value {
  font-size: 22px;
  font-weight: 800;
  color: var(--ui-danger);
  letter-spacing: 0.02em;
}

/* ??? Sidebar ??? */
.ui-sidebar {
  width: 100%;
  max-width: var(--ui-sidebar-w);
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  padding: var(--ui-space-3);
  box-shadow: var(--ui-shadow-sm);
}

.ui-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  padding: var(--ui-space-2) var(--ui-space-3);
  margin-bottom: var(--ui-space-2);
  font-weight: 700;
  font-size: 13px;
}

.ui-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ui-nav__item {
  display: flex;
  align-items: center;
  gap: var(--ui-space-3);
  height: 40px;
  padding: 0 12px;
  border-radius: var(--ui-radius-md);
  color: var(--ui-n-700);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  border: 0;
  background: transparent;
  width: 100%;
  text-align: left;
}

.ui-nav__item:hover { background: var(--ui-n-50); text-decoration: none; }

.ui-nav__item.is-active {
  background: var(--ui-primary);
  color: #fff;
}

.ui-nav__item .ui-badge-count {
  margin-left: auto;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--ui-danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ui-nav__item.is-active .ui-badge-count {
  background: #fff;
  color: var(--ui-primary);
}

.ui-nav__item .ui-badge-count.warn {
  background: var(--ui-warning);
  color: #fff;
}

/* ??? Forms ??? */
.ui-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.ui-field > label,
.ui-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--ui-n-700);
}

.ui-input,
.ui-select,
.ui-textarea {
  width: 100%;
  height: var(--ui-input-h);
  padding: 0 12px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--ui-radius-md);
  background: var(--ui-surface);
  color: var(--ui-text-primary);
  font-size: 13px;
  box-shadow: var(--ui-shadow-sm);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.ui-textarea {
  height: auto;
  min-height: 80px;
  padding: 10px 12px;
  resize: vertical;
}

.ui-input::placeholder,
.ui-textarea::placeholder { color: var(--ui-n-400); }

.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus,
.ui-input.is-demo-focus,
.ui-select.is-demo-focus,
.ui-textarea.is-demo-focus {
  border-color: var(--ui-primary);
  box-shadow: var(--ui-focus-ring);
}

.ui-field.is-success .ui-input,
.ui-field.is-success .ui-select,
.ui-field.is-success .ui-textarea {
  border-color: var(--ui-success);
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2319A34A' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.ui-field.is-error .ui-input,
.ui-field.is-error .ui-select,
.ui-field.is-error .ui-textarea {
  border-color: var(--ui-danger);
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23EF4444' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='m15 9-6 6M9 9l6 6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.ui-field__hint {
  font-size: 12px;
  color: var(--ui-text-muted);
}
.ui-field.is-error .ui-field__hint { color: var(--ui-danger); }
.ui-field.is-success .ui-field__hint { color: var(--ui-success); }

.ui-input:disabled,
.ui-select:disabled,
.ui-textarea:disabled,
.ui-input[readonly] {
  background: var(--ui-n-100);
  color: var(--ui-n-500);
  cursor: not-allowed;
}

.ui-input-wrap {
  position: relative;
}
.ui-input-wrap .ui-input { padding-right: 36px; }
.ui-input-wrap .ui-input-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ui-n-400);
  pointer-events: none;
}
.ui-input-wrap--left .ui-input { padding-left: 36px; padding-right: 12px; }
.ui-input-wrap--left .ui-input-icon { left: 10px; right: auto; }

.ui-check,
.ui-radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ui-n-700);
  cursor: pointer;
  user-select: none;
}

.ui-check input,
.ui-radio input {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--ui-border-strong);
  background: #fff;
  display: grid;
  place-content: center;
  margin: 0;
  flex-shrink: 0;
}
.ui-check input { border-radius: 3px; }
.ui-radio input { border-radius: 50%; }

.ui-check input:checked {
  background: var(--ui-primary);
  border-color: var(--ui-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}
.ui-radio input:checked {
  border-color: var(--ui-primary);
  background: radial-gradient(circle, var(--ui-primary) 0 45%, #fff 48%);
}
.ui-check input:focus-visible,
.ui-radio input:focus-visible { box-shadow: var(--ui-focus-ring); }

.ui-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
}
.ui-toggle input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  clip: rect(0 0 0 0);
}
.ui-toggle__track {
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--ui-n-300);
  position: relative;
  transition: background .15s ease;
  flex-shrink: 0;
}
.ui-toggle__track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--ui-shadow-sm);
  transition: transform .15s ease;
}
.ui-toggle input:checked + .ui-toggle__track { background: var(--ui-primary); }
.ui-toggle input:checked + .ui-toggle__track::after { transform: translateX(16px); }
.ui-toggle input:focus-visible + .ui-toggle__track { box-shadow: var(--ui-focus-ring); }

.ui-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--ui-space-4);
}

/* ??? Tables ??? */
.ui-table-wrap {
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  overflow: hidden;
  background: var(--ui-surface);
}

.ui-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.ui-table thead th {
  height: 40px;
  padding: 0 12px;
  text-align: left;
  background: var(--ui-n-50);
  border-bottom: 1px solid var(--ui-border);
  color: var(--ui-n-500);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.ui-table thead th .ui-sort {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
  border: 0;
  background: transparent;
  padding: 0;
  font: inherit;
  color: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
}

.ui-table tbody td {
  height: var(--ui-table-row-h);
  padding: 0 12px;
  border-bottom: 1px solid var(--ui-border);
  color: var(--ui-n-700);
  vertical-align: middle;
}

.ui-table tbody tr:nth-child(even) td { background: var(--ui-n-50); }
.ui-table tbody tr:hover td { background: var(--ui-primary-soft); }
.ui-table tbody tr.is-selected td { background: var(--ui-selected-bg); }
.ui-table tbody tr:last-child td { border-bottom: 0; }

.ui-table .ui-plate {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ui-table-actions {
  display: inline-flex;
  gap: 4px;
}

.ui-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ui-space-3);
  padding: var(--ui-space-3) 0 0;
  flex-wrap: wrap;
}

.ui-pagination__pages {
  display: inline-flex;
  gap: 4px;
}

.ui-page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border-radius: var(--ui-radius-sm);
  border: 1px solid var(--ui-border);
  background: var(--ui-surface);
  color: var(--ui-n-700);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.ui-page-btn.is-active {
  background: var(--ui-primary);
  border-color: var(--ui-primary);
  color: #fff;
}
.ui-page-btn:disabled { opacity: .45; cursor: not-allowed; }

.ui-empty {
  padding: var(--ui-space-8);
  text-align: center;
  color: var(--ui-text-muted);
}

/* ??? Badges ??? */
.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  border: 1px solid transparent;
  line-height: 1;
}

.ui-badge--new { background: var(--ui-status-info-bg); color: var(--ui-status-info-fg); }
.ui-badge--verify { background: var(--ui-status-warning-bg); color: var(--ui-status-warning-fg); }
.ui-badge--confirmed { background: var(--ui-status-success-bg); color: var(--ui-status-success-fg); }
.ui-badge--rejected { background: var(--ui-status-danger-bg); color: var(--ui-status-danger-fg); }
.ui-badge--forwarded { background: var(--ui-status-accent-bg); color: var(--ui-status-accent-fg); }
.ui-badge--closed { background: var(--ui-n-100); color: var(--ui-n-600); }

.ui-badge--online { background: var(--ui-success-soft); color: var(--ui-success); }
.ui-badge--warn-dev { background: var(--ui-warning-soft); color: var(--ui-status-warning-fg); }
.ui-badge--fault { background: var(--ui-danger-soft); color: var(--ui-danger); }
.ui-badge--offline { background: var(--ui-n-100); color: var(--ui-n-500); }

.ui-badge--signal-off,
.ui-badge--signal-on,
.ui-badge--barriers-down,
.ui-badge--barriers-moving,
.ui-badge--barriers-up {
  border-radius: var(--ui-radius-sm);
  background: transparent;
}
.ui-badge--signal-off {
  border-color: var(--ui-n-300);
  color: var(--ui-n-500);
}
.ui-badge--signal-on {
  border-color: var(--ui-danger);
  color: var(--ui-danger);
}
.ui-badge--barriers-down {
  border-color: var(--ui-warning);
  color: var(--ui-status-warning-fg);
}
.ui-badge--barriers-moving {
  border-color: var(--ui-info);
  color: var(--ui-status-rail-info-fg);
}
.ui-badge--barriers-up {
  border-color: var(--ui-success);
  color: var(--ui-success);
}

.ui-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ??? Charts ??? */
.ui-chart {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  padding: var(--ui-space-4);
  box-shadow: var(--ui-shadow-sm);
}

.ui-chart__title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: var(--ui-space-3);
  color: var(--ui-n-700);
}

.ui-chart__canvas-wrap {
  position: relative;
  width: 100%;
  height: 160px;
}

.ui-chart__canvas-wrap.donut {
  height: 140px;
  max-width: 140px;
  margin: 0 auto;
}

/* ??? Alerts ??? */
.ui-alert {
  display: flex;
  gap: var(--ui-space-3);
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: var(--ui-radius-md);
  border: 1px solid transparent;
  border-left-width: 4px;
  font-size: 13px;
  line-height: 18px;
  position: relative;
}

.ui-alert__close {
  margin-left: auto;
  border: 0;
  background: transparent;
  color: inherit;
  opacity: 0.55;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
}

.ui-alert__title {
  font-weight: 700;
  margin-bottom: 2px;
}

.ui-alert--danger {
  background: var(--ui-danger-soft);
  border-color: var(--ui-status-danger-border);
  border-left-color: var(--ui-danger);
  color: var(--ui-status-danger-ink);
}
.ui-alert--warning {
  background: var(--ui-warning-soft);
  border-color: var(--ui-status-warning-border);
  border-left-color: var(--ui-warning);
  color: var(--ui-status-warning-ink);
}
.ui-alert--info {
  background: var(--ui-info-soft);
  border-color: var(--ui-status-info-border);
  border-left-color: var(--ui-info);
  color: var(--ui-status-info-ink);
}
.ui-alert--success {
  background: var(--ui-success-soft);
  border-color: var(--ui-status-success-border);
  border-left-color: var(--ui-success);
  color: var(--ui-status-success-ink);
}

/* [hidden] must beat component display:flex */
.ui-alert[hidden],
.ui-notif-panel[hidden] {
  display: none !important;
}

.ui-notif-panel {
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-lg);
  overflow: hidden;
  background: var(--ui-surface);
  max-width: 360px;
}

.ui-notif-panel__head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--ui-border);
  font-weight: 700;
  font-size: 13px;
}

.ui-notif-item {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--ui-border);
  position: relative;
}
.ui-notif-item:last-child { border-bottom: 0; }
.ui-notif-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--ui-primary);
}
.ui-notif-item.danger::before { background: var(--ui-danger); }
.ui-notif-item.warning::before { background: var(--ui-warning); }
.ui-notif-item.success::before { background: var(--ui-success); }

.ui-notif-item__title { font-size: 13px; font-weight: 600; }
.ui-notif-item__meta { font-size: 11px; color: var(--ui-text-muted); margin-top: 2px; }

/* ??? Modals ??? */
.ui-modal-demo {
  position: relative;
  min-height: 280px;
  background: rgba(15, 23, 42, 0.35);
  border-radius: var(--ui-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ui-space-5);
}

.ui-modal {
  width: min(420px, 100%);
  background: var(--ui-surface);
  border-radius: var(--ui-radius-lg);
  box-shadow: var(--ui-shadow-lg);
  border: 1px solid var(--ui-border);
  padding: var(--ui-space-5);
}

.ui-modal--sm { width: min(360px, 100%); }
.ui-modal--lg { width: min(560px, 100%); }

.ui-modal__head {
  display: flex;
  align-items: flex-start;
  gap: var(--ui-space-3);
  margin-bottom: var(--ui-space-3);
}

.ui-modal__icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--ui-warning-soft);
  color: var(--ui-status-warning-fg);
}

.ui-modal__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 24px;
}

.ui-modal__body {
  font-size: 13px;
  color: var(--ui-text-secondary);
  margin-bottom: var(--ui-space-5);
}

.ui-modal__foot {
  display: flex;
  justify-content: flex-end;
  gap: var(--ui-space-2);
}

.ui-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--ui-space-5);
}
.ui-modal-overlay.is-open { display: flex; }

/* ??? Camera grid ??? */
.rail-camera-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.rail-camera {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--ui-radius-md);
  overflow: hidden;
  background: #0B1220;
  border: 1px solid var(--ui-border);
}

.rail-camera__feed {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background:
    linear-gradient(180deg, rgba(15,23,42,.15), rgba(15,23,42,.55)),
    repeating-linear-gradient(90deg, #1e293b 0 2px, #0f172a 2px 40px),
    linear-gradient(135deg, #334155, #0f172a);
}

.rail-camera__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to bottom, rgba(0,0,0,.45) 0, transparent 28%),
    linear-gradient(to top, rgba(0,0,0,.4) 0, transparent 22%);
}

.rail-camera__top {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  z-index: 2;
}

.rail-camera__name {
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
  text-shadow: 0 1px 2px rgba(0,0,0,.5);
}

.rail-camera__live {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 18px;
  padding: 0 6px;
  border-radius: 3px;
  background: rgba(239, 68, 68, 0.92);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.06em;
}
.rail-camera__live::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
}
.rail-camera.is-offline .rail-camera__live {
  background: rgba(107, 114, 128, 0.92);
}
.rail-camera.is-offline .rail-camera__live::before { display: none; }

.rail-camera__bottom {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
  color: rgba(255,255,255,.9);
  font-size: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.rail-camera__actions {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 3;
  display: flex;
  gap: 4px;
}
.rail-camera__actions .ui-btn {
  width: 28px;
  height: 28px;
  background: rgba(15,23,42,.55);
  border-color: transparent;
  color: #fff;
  box-shadow: none;
}

.rail-anpr-box {
  position: absolute;
  border: 2px solid #22C55E;
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
  z-index: 1;
}
.rail-anpr-box::after {
  content: attr(data-plate);
  position: absolute;
  left: 0;
  top: -18px;
  background: #22C55E;
  color: #052e16;
  font-size: 9px;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 2px;
}

.rail-detect-line {
  position: absolute;
  left: 8%;
  right: 8%;
  height: 2px;
  background: rgba(59, 130, 246, 0.85);
  z-index: 1;
}

/* ??? Timeline ??? */
.rail-event-timeline {
  position: relative;
  padding-left: 20px;
}

.rail-event-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--ui-border);
}

.rail-event-timeline__item {
  position: relative;
  padding: 0 0 16px 16px;
}

.rail-event-timeline__item:last-child { padding-bottom: 0; }

.rail-event-timeline__dot {
  position: absolute;
  left: -15px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ui-primary);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--ui-primary);
}

.rail-event-timeline__item.danger .rail-event-timeline__dot {
  background: var(--ui-danger);
  box-shadow: 0 0 0 2px var(--ui-danger);
}
.rail-event-timeline__item.warning .rail-event-timeline__dot {
  background: var(--ui-warning);
  box-shadow: 0 0 0 2px var(--ui-warning);
}
.rail-event-timeline__item.success .rail-event-timeline__dot {
  background: var(--ui-success);
  box-shadow: 0 0 0 2px var(--ui-success);
}
.rail-event-timeline__item.info .rail-event-timeline__dot {
  background: var(--ui-info);
  box-shadow: 0 0 0 2px var(--ui-info);
}

.rail-event-timeline__time {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  color: var(--ui-text-muted);
  font-weight: 600;
}

.rail-event-timeline__label {
  font-size: 13px;
  font-weight: 700;
  margin-top: 2px;
  letter-spacing: 0.02em;
}

/* ??? Tabs / config ??? */
.ui-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--ui-border);
  margin-bottom: var(--ui-space-4);
}

.ui-tab {
  height: 36px;
  padding: 0 14px;
  border: 0;
  background: transparent;
  color: var(--ui-text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.ui-tab.is-active {
  color: var(--ui-primary);
  border-bottom-color: var(--ui-primary);
}

.rail-config-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--ui-space-5);
}

.rail-map {
  height: 180px;
  border-radius: var(--ui-radius-md);
  border: 1px solid var(--ui-border);
  background:
    linear-gradient(rgba(148,163,184,.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.15) 1px, transparent 1px),
    #E8EEF5;
  background-size: 20px 20px, 20px 20px, auto;
  position: relative;
  overflow: hidden;
}

.rail-map__pin {
  position: absolute;
  left: 58%;
  top: 42%;
  width: 16px;
  height: 16px;
  transform: translate(-50%, -100%);
}
.rail-map__pin::before {
  content: "";
  display: block;
  width: 16px;
  height: 16px;
  background: var(--ui-danger);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  box-shadow: 0 2px 6px rgba(239,68,68,.45);
}

/* ??? Dropdown ??? */
.ui-dropdown {
  position: relative;
  display: inline-block;
}
.ui-dropdown__menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 160px;
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-md);
  box-shadow: var(--ui-shadow-lg);
  padding: 4px;
  z-index: 50;
  display: none;
}
.ui-dropdown.is-open .ui-dropdown__menu { display: block; }
.ui-dropdown__item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  height: 32px;
  padding: 0 10px;
  border: 0;
  background: transparent;
  border-radius: var(--ui-radius-sm);
  font-size: 13px;
  color: var(--ui-n-700);
  cursor: pointer;
  text-align: left;
}
.ui-dropdown__item:hover { background: var(--ui-n-50); }
.ui-dropdown__item.danger { color: var(--ui-danger); }

/* ??? Type specimen ??? */
.ui-type-list {
  display: grid;
  gap: var(--ui-space-3);
}
.ui-type-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--ui-space-4);
  align-items: baseline;
  padding-bottom: var(--ui-space-3);
  border-bottom: 1px solid var(--ui-border);
}
.ui-type-row:last-child { border-bottom: 0; padding-bottom: 0; }
.ui-type-meta {
  font-size: 11px;
  color: var(--ui-text-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Embedded SoT section ? used by ui-catalog.html live previews */
html.ui-embed,
html.ui-embed body {
  min-height: 0;
  height: auto;
  overflow: hidden;
  background: #fff;
}
html.ui-embed .ui-lib-header,
html.ui-embed .ui-mobile-nav,
html.ui-embed .ui-drawer,
html.ui-embed .ui-watermark,
html.ui-embed .ui-modal-overlay {
  display: none !important;
}
html.ui-embed .ui-page {
  padding: 0 !important;
  min-height: 0;
}
html.ui-embed .ui-lib-main {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 16px;
}
html.ui-embed .ui-board {
  display: block;
}
html.ui-embed .ui-board > .ui-section[hidden] {
  display: none !important;
}
html.ui-embed .ui-board > .ui-section.is-embed-target {
  display: block;
  width: 100%;
  margin: 0;
  box-shadow: none;
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
}
html.ui-demo .ui-page { display: none !important; }
html.ui-demo #ui-demo-root { display: block !important; }
#ui-demo-root[hidden] { display: none !important; }

/* ?? Catalog V2 domain extras (shared SoT styles) ?? */
.rail-camera.is-connecting .rail-camera__live { background: rgba(245,158,11,.92); }
.rail-camera.is-degraded .rail-camera__live { background: rgba(245,158,11,.85); }
.rail-anpr-card__plate {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.06em;
  margin-top: 6px;
}
.rail-evidence-thumb {
  height: 88px;
  margin-top: 8px;
  border-radius: var(--ui-radius-md);
  background:
    linear-gradient(180deg, rgba(15,23,42,.2), rgba(15,23,42,.55)),
    repeating-linear-gradient(90deg, #1e293b 0 2px, #0f172a 2px 36px);
}
.rail-barrier-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--ui-n-100);
  border: 1px solid var(--ui-border);
  position: relative;
}
.rail-barrier-icon::before {
  content: "";
  position: absolute;
  left: 8px; right: 8px; top: 16px;
  height: 4px;
  border-radius: 2px;
  background: var(--ui-warning);
  transform-origin: left center;
}
.rail-barrier-icon[data-state="open"]::before { transform: rotate(-55deg); background: var(--ui-success); }
.rail-barrier-icon[data-state="closed"]::before { transform: rotate(0deg); background: var(--ui-warning); }
.rail-barrier-icon[data-state="closing"]::before,
.rail-barrier-icon[data-state="opening"]::before { transform: rotate(-28deg); background: var(--ui-info); }
.rail-barrier-icon[data-state="failure"]::before { background: var(--ui-danger); }
.rail-barrier-icon[data-state="unknown"]::before { background: var(--ui-n-400); }
.rail-detection-demo__stage {
  position: relative;
  height: 180px;
  border-radius: var(--ui-radius-md);
  overflow: hidden;
  border: 1px solid var(--ui-border);
  background:
    linear-gradient(180deg, rgba(15,23,42,.1), rgba(15,23,42,.45)),
    repeating-linear-gradient(90deg, #334155 0 2px, #1e293b 2px 40px);
}
.rail-zone {
  position: absolute;
  border: 1px dashed rgba(59,130,246,.85);
  background: rgba(59,130,246,.12);
}
.rail-zone--entry { left: 8%; right: 8%; top: 18%; height: 28%; }
.rail-zone--track { left: 20%; right: 20%; top: 58%; height: 22%; border-color: rgba(239,68,68,.85); background: rgba(239,68,68,.12); }
.rail-pattern { display: flex; flex-direction: column; gap: 0; }
.ui-demo-root { padding: 16px; background: #fff; min-height: 120px; }

/* Token swatches for foundation spacing/radius/shadows */
.ui-token-demo { display: flex; flex-wrap: wrap; gap: 12px; }
.ui-token-chip {
  min-width: 88px;
  padding: 12px;
  border: 1px solid var(--ui-border);
  border-radius: var(--ui-radius-md);
  background: #fff;
  text-align: center;
  font-size: 11px;
  color: var(--ui-n-600);
}
.ui-token-chip__swatch { height: 28px; margin-bottom: 8px; background: var(--ui-primary-soft); border-radius: var(--ui-radius-sm); }

html.ui-demo .ui-page { display: none !important; }
html.ui-demo #ui-demo-root { display: block !important; }
#ui-demo-root[hidden] { display: none !important; }