/* Optional visual layer for the maintained legacy SPA. */
html[data-ui-effects="v1"] {
  --shadow-sm: 0 1px 2px rgba(31, 65, 97, 0.05), 0 4px 12px rgba(31, 65, 97, 0.035);
  --shadow-md: 0 8px 24px rgba(31, 65, 97, 0.075), 0 2px 8px rgba(31, 65, 97, 0.035);
  --shadow-lg: 0 18px 44px rgba(31, 65, 97, 0.11), 0 4px 14px rgba(31, 65, 97, 0.05);
  --shadow-xl: 0 26px 70px rgba(24, 50, 75, 0.16), 0 8px 22px rgba(31, 65, 97, 0.07);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-sine: cubic-bezier(0.37, 0, 0.63, 1);
  --focus-ring: 0 0 0 3px var(--status-info-bg), 0 0 0 1px var(--border-focus);
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

html[data-ui-effects="v1"][data-theme="dark"] {
  --shadow-sm: 0 1px 2px rgba(7, 14, 24, 0.18), 0 6px 18px rgba(7, 14, 24, 0.08);
  --shadow-md: 0 10px 30px rgba(7, 14, 24, 0.22), 0 2px 8px rgba(7, 14, 24, 0.12);
  --shadow-lg: 0 20px 52px rgba(7, 14, 24, 0.27), 0 4px 16px rgba(7, 14, 24, 0.14);
  --shadow-xl: 0 30px 76px rgba(7, 14, 24, 0.34), 0 8px 24px rgba(7, 14, 24, 0.18);
}

html[data-ui-effects="v1"] *::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

html[data-ui-effects="v1"] *::-webkit-scrollbar-track {
  background: transparent;
}

html[data-ui-effects="v1"] *::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border: 3px solid transparent;
  border-radius: 999px;
  background-clip: padding-box;
}

html[data-ui-effects="v1"] *::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-muted);
}

html[data-ui-effects="v1"] .nav {
  scrollbar-color: transparent transparent;
}

html[data-ui-effects="v1"] .nav::-webkit-scrollbar-thumb {
  background: transparent;
  transition: background-color var(--transition-fast);
}

html[data-ui-effects="v1"] .main::-webkit-scrollbar-thumb {
  background: transparent;
  transition: background-color var(--transition-fast);
}

html[data-ui-effects="v1"] .main.is-scrolling {
  scrollbar-color: var(--border-strong) transparent;
}

html[data-ui-effects="v1"] .main.is-scrolling::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  background-clip: padding-box;
}

@media (hover: hover) and (pointer: fine) {
  html[data-ui-effects="v1"] .nav:hover {
    scrollbar-color: var(--border-strong) transparent;
  }

  html[data-ui-effects="v1"] .nav:hover::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    background-clip: padding-box;
  }
}

html[data-ui-effects="v1"] body {
  background-image: linear-gradient(180deg, var(--bg-elevated) 0, transparent 180px);
  background-attachment: fixed;
}

html[data-ui-effects="v1"] :is(button, a, input, textarea, select, [tabindex]):focus-visible {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: var(--focus-ring);
}

html[data-ui-effects="v1"] :is(table, .stat strong, .customer-summary-card strong, .admin-dashboard-metric strong, .visibility-progress-time, .side-version) {
  font-variant-numeric: tabular-nums;
}

html[data-ui-effects="v1"] .login-card {
  box-shadow: var(--shadow-lg);
}

html[data-ui-effects="v1"] .panel {
  box-shadow: var(--shadow-sm);
}

html[data-ui-effects="v1"] :is(.user-menu, .modal) {
  box-shadow: var(--shadow-xl);
}

html[data-ui-effects="v1"] :is(.admin-dashboard-metric, .visibility-progress-panel, .visibility-step-log) {
  box-shadow: var(--shadow-sm);
}

html[data-ui-effects="v1"] button {
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform 180ms var(--ease-out-expo),
    box-shadow 180ms var(--ease-out-expo);
}

html[data-ui-effects="v1"] button:disabled {
  transform: none !important;
  box-shadow: none !important;
}

html[data-ui-effects="v1"] :is(.nav button, .user-menu button, .top-meta-button, .admin-dashboard-todo, .core-question-history-open):is(:hover, :active) {
  transform: none;
}

html[data-ui-effects="v1"] .nav button::before {
  transition: top 220ms var(--ease-out-expo), bottom 220ms var(--ease-out-expo), opacity 150ms ease-out;
}

html[data-ui-effects="v1"] .nav button.active::before {
  animation: ui-nav-indicator-in 220ms var(--ease-out-expo) both;
}

html[data-ui-effects="v1"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) {
  padding-bottom: 0;
}

html[data-ui-effects="v1"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) button {
  position: relative;
  border: 0;
  border-radius: 6px 6px 0 0;
  background: transparent;
  color: var(--muted);
  box-shadow: none;
}

html[data-ui-effects="v1"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) button:hover {
  background: var(--bg-hover);
  color: var(--ink);
  box-shadow: none;
  transform: none;
}

html[data-ui-effects="v1"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) button.active {
  background: transparent;
  border: 0;
  color: var(--action-primary);
  box-shadow: none;
}

html[data-ui-effects="v1"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) button.active::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: -1px;
  left: 8px;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: var(--action-primary);
  transform: scaleX(0);
  transform-origin: center;
  animation: ui-tab-indicator-in 260ms var(--ease-out-expo) forwards;
}

html[data-ui-effects="v1"] tbody tr {
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

html[data-ui-effects="v1"] .modal-backdrop {
  animation: ui-modal-backdrop-in 180ms ease-out both;
}

html[data-ui-effects="v1"] .modal {
  animation: ui-modal-in 300ms var(--ease-out-expo) both;
}

html[data-ui-effects="v1"] .sidebar {
  transition: transform 350ms var(--ease-out-expo), box-shadow 250ms ease-out;
}

html[data-ui-effects="v1"] .content.view-entering > * {
  animation: ui-view-enter 360ms var(--ease-out-expo) both;
}

html[data-ui-effects="v1"] .content.view-entering > :nth-child(2) { animation-delay: 35ms; }
html[data-ui-effects="v1"] .content.view-entering > :nth-child(3) { animation-delay: 70ms; }
html[data-ui-effects="v1"] .content.view-entering > :nth-child(4) { animation-delay: 105ms; }
html[data-ui-effects="v1"] .content.view-entering > :nth-child(5) { animation-delay: 140ms; }
html[data-ui-effects="v1"] .content.view-entering > :nth-child(n + 6) { animation-delay: 175ms; }

html[data-ui-effects="v1"] [data-visibility-progress-bar] {
  position: relative;
  overflow: hidden;
}

html[data-ui-effects="v1"] [data-visibility-progress-bar][data-visibility-active="1"]::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  transform: translateX(-110%);
  animation: ui-progress-shimmer 1.8s var(--ease-in-out-sine) infinite;
}

html[data-ui-effects="v1"] :is(.visibility-stage-card.active, .visibility-platform-stage.active) {
  animation: ui-live-status 2.2s var(--ease-in-out-sine) infinite;
}

/* V2 controlled light effects. The extra root flag allows an independent rollback. */
html[data-ui-effects="v1"][data-ui-light="v2"] .login {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .login::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: 0;
  right: 10%;
  left: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-primary), var(--action-primary), transparent);
  box-shadow: 0 8px 30px color-mix(in srgb, var(--brand-primary) 28%, transparent);
  opacity: 0.72;
  pointer-events: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .login-card {
  position: relative;
  z-index: 1;
  transition: border-color 220ms ease-out, box-shadow 220ms var(--ease-out-expo);
}

html[data-ui-effects="v1"][data-ui-light="v2"] .btn-sheen {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .btn-sheen::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.28) 50%, transparent 58%);
  transform: translateX(-135%);
  animation: ui-button-sheen 3.2s ease-in-out infinite;
  pointer-events: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .side-brand-sheen {
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.24) 50%, transparent 58%);
  transform: translateX(-135%);
  animation: ui-button-sheen 3.2s ease-in-out infinite;
  pointer-events: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .sidebar-collapsed .side-brand-sheen {
  display: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .btn-sheen:disabled::after,
html[data-ui-effects="v1"][data-ui-light="v2"] .btn-sheen[aria-busy="true"]::after {
  animation: none !important;
  transform: translateX(-135%) !important;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .pulse-dot {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--status-info);
  background: currentColor;
  vertical-align: 1px;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .pulse-dot[data-live-state="online"] {
  color: var(--status-success);
}

html[data-ui-effects="v1"][data-ui-light="v2"] .pulse-dot[data-live-state="running"] {
  color: var(--status-warning);
}

html[data-ui-effects="v1"][data-ui-light="v2"] .pulse-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 1px solid currentColor;
  border-radius: 50%;
  animation: ui-pulse-ring 2.6s ease-out infinite;
  pointer-events: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"] .core-question-running-dot.pulse-dot {
  animation: none;
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] .nav button.active::before {
  box-shadow: 0 0 14px color-mix(in srgb, var(--brand-primary) 68%, transparent);
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] :is(.tabs, .admin-log-tabs, .visibility-batch-task-tabs) button.active::after {
  box-shadow: 0 0 10px color-mix(in srgb, var(--action-primary) 58%, transparent);
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] .pulse-dot {
  box-shadow: 0 0 10px color-mix(in srgb, currentColor 62%, transparent);
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] .btn-sheen::after {
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.18) 50%, transparent 58%);
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] .side-brand-sheen {
  background: linear-gradient(105deg, transparent 42%, rgba(255, 255, 255, 0.20) 50%, transparent 58%);
}

html[data-ui-effects="v1"][data-ui-light="v2"][data-ui-motion-paused="1"] .btn-sheen::after,
html[data-ui-effects="v1"][data-ui-light="v2"][data-ui-motion-paused="1"] .side-brand-sheen,
html[data-ui-effects="v1"][data-ui-light="v2"][data-ui-motion-paused="1"] .pulse-dot::after {
  animation-play-state: paused !important;
}

@supports ((backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px))) {
  @media (min-width: 821px) {
    html[data-ui-effects="v1"] .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 255, 255, 0.88);
      -webkit-backdrop-filter: blur(12px) saturate(130%);
      backdrop-filter: blur(12px) saturate(130%);
    }

    html[data-ui-effects="v1"][data-theme="dark"] .topbar {
      background: rgba(32, 42, 54, 0.92);
    }
  }
}

@media (hover: hover) and (pointer: fine) {
  html[data-ui-effects="v1"] button:not(:disabled):not(.nav-parent):hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

  html[data-ui-effects="v1"] button:not(:disabled):active {
    transform: translateY(0) scale(0.98);
    box-shadow: var(--shadow-sm);
  }

  html[data-ui-effects="v1"] :is(.nav, .tabs, .admin-log-tabs, .visibility-batch-task-tabs, .user-menu) button:not(:disabled):is(:hover, :active),
  html[data-ui-effects="v1"] :is(.top-meta-button, .core-question-history-open):not(:disabled):is(:hover, :active) {
    transform: none;
    box-shadow: none;
  }

  html[data-ui-effects="v1"] .nav button:not(.active):hover::before {
    content: "";
    position: absolute;
    top: 12px;
    bottom: 12px;
    left: 0;
    width: 3px;
    border-radius: 0 4px 4px 0;
    background: var(--brand-primary);
    opacity: 0.28;
  }

  html[data-ui-effects="v1"] :is(
    .doc-row,
    .history-item,
    .core-question-history-row,
    .visibility-batch-card.history-card,
    .admin-dashboard-todo,
    .storage-company-list button,
    .asset-card:has(button, a),
    .customer-feature-card:has(button, a),
    .visibility-report-card:has(button, a),
    .asset-scenario-card:has(button, a),
    .asset-dimension-card:has(button, a)
  ) {
    transition:
      border-color var(--transition-normal),
      background-color var(--transition-normal),
      transform 220ms var(--ease-out-expo),
      box-shadow 220ms var(--ease-out-expo);
  }

  html[data-ui-effects="v1"] :is(
    .doc-row,
    .history-item,
    .core-question-history-row,
    .visibility-batch-card.history-card,
    .admin-dashboard-todo,
    .storage-company-list button,
    .asset-card:has(button, a),
    .customer-feature-card:has(button, a),
    .visibility-report-card:has(button, a),
    .asset-scenario-card:has(button, a),
    .asset-dimension-card:has(button, a)
  ):hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  html[data-ui-effects="v1"] .visibility-batch-card.history-card:focus-within {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  html[data-ui-effects="v1"] tbody tr:hover {
    background: var(--bg-hover);
    box-shadow: inset 3px 0 0 var(--brand-primary);
  }

  html[data-ui-effects="v1"][data-ui-light="v2"] :is(
    .admin-dashboard-metric,
    .asset-card:has(button, a),
    .visibility-report-card:has(button, a)
  ):hover {
    border-color: color-mix(in srgb, var(--brand-primary) 72%, var(--border-strong));
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--brand-primary) 32%, transparent), var(--shadow-md);
  }

  html[data-ui-effects="v1"][data-ui-light="v2"] .login-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-lg);
  }

  html[data-ui-effects="v1"][data-ui-light="v2"][data-theme="dark"] .btn-sheen:not(:disabled):is(:hover, :focus-visible) {
    box-shadow: 0 0 20px -8px color-mix(in srgb, var(--action-primary) 72%, transparent), var(--shadow-md);
  }
}

@media (hover: none), (pointer: coarse) {
  html[data-ui-effects="v1"] button:hover,
  html[data-ui-effects="v1"] button:active {
    transform: none;
    box-shadow: none;
  }
}

@media (max-width: 820px) {
  html[data-ui-effects="v1"][data-ui-light="v2"] .sidebar-collapsed .side-brand-sheen {
    display: block;
  }

  html[data-ui-effects="v1"] body {
    background-image: none;
  }

  html[data-ui-effects="v1"] :is(.login-card, .panel, .admin-dashboard-metric, .visibility-progress-panel, .visibility-step-log) {
    box-shadow: none;
  }

  html[data-ui-effects="v1"] .topbar {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  html[data-ui-effects="v1"] .content.view-entering > * {
    animation-name: ui-view-enter-mobile;
    animation-duration: 240ms;
    animation-delay: 0ms;
  }

  html[data-ui-effects="v1"] .modal {
    animation-name: ui-sheet-in;
  }

  html[data-ui-effects="v1"] .table-wrap tr:hover {
    box-shadow: var(--shadow-sm);
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html[data-ui-effects="v1"] *,
  html[data-ui-effects="v1"] *::before,
  html[data-ui-effects="v1"] *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  html[data-ui-effects="v1"] body {
    background-image: none !important;
  }

  html[data-ui-effects="v1"] *,
  html[data-ui-effects="v1"] *::before,
  html[data-ui-effects="v1"] *::after {
    animation: none !important;
    transition: none !important;
    box-shadow: none !important;
    text-shadow: none !important;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }
}

@keyframes ui-view-enter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ui-view-enter-mobile {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ui-tab-indicator-in {
  to { transform: scaleX(1); }
}

@keyframes ui-nav-indicator-in {
  from { opacity: 0; transform: scaleY(0.35); }
  to { opacity: 1; transform: scaleY(1); }
}

@keyframes ui-modal-backdrop-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes ui-modal-in {
  from { opacity: 0; transform: translateY(10px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes ui-sheet-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ui-progress-shimmer {
  to { transform: translateX(110%); }
}

@keyframes ui-live-status {
  0%, 100% { box-shadow: 0 0 0 0 rgba(175, 43, 30, 0); }
  50% { box-shadow: 0 0 0 3px rgba(175, 43, 30, 0.1); }
}

@keyframes ui-button-sheen {
  0%, 55% { transform: translateX(-135%); }
  100% { transform: translateX(135%); }
}

@keyframes ui-pulse-ring {
  0% { transform: scale(0.65); opacity: 0.72; }
  72%, 100% { transform: scale(1.55); opacity: 0; }
}