.hero,
.section-card,
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.hero,
.section-card {
  padding: var(--space-4);
}

.feature-card {
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.feature-card-head,
.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.feature-card h3,
.section-head h1 {
  font-size: 20px;
  line-height: 1.3;
}

.section-card h2 {
  font-size: 18px;
  margin-bottom: var(--space-2);
}

.sub-title {
  font-size: 15px;
  margin-bottom: var(--space-1);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-high {
  background: #ffe6e2;
  color: #8e1f10;
}

.badge-medium {
  background: #fff3df;
  color: #8a5900;
}

.badge-low {
  background: #e5f2ff;
  color: #124f96;
}

.list {
  display: grid;
  gap: 6px;
  color: var(--text-sub);
}

.text-muted,
.feature-desc,
.meta-list dt,
.page-note,
.footer-note,
.result-status {
  color: var(--text-muted);
}

.meta-list {
  display: grid;
  gap: 8px;
}

.meta-list div {
  display: grid;
  gap: 4px;
}

.meta-list dt {
  font-size: 13px;
}

.meta-list dd {
  color: var(--text-sub);
  font-size: 14px;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1;
  padding: 10px 14px;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: #ffffff;
  border-color: var(--line);
  color: var(--text-main);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  font-size: 14px;
}

.data-table th {
  width: 180px;
  color: var(--text-muted);
}

.code-block {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 8px;
  padding: var(--space-2);
  overflow-x: auto;
  min-height: 64px;
  font-size: 13px;
}

.action-form {
  display: grid;
  gap: var(--space-2);
}

.action-form label {
  font-weight: 600;
}

.action-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font-size: 13px;
  resize: vertical;
  background: #ffffff;
}

.action-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.result-panel {
  margin-top: var(--space-3);
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  padding: var(--space-3);
}

.result-panel.state-empty {
  border-color: var(--line);
}

.result-panel.state-loading {
  border-color: #a8c5ff;
  background: #f0f5ff;
}

.result-panel.state-success {
  border-color: #96d8bd;
  background: #ecfbf4;
}

.result-panel.state-error {
  border-color: #f0b4ac;
  background: #fff3f1;
}

.source-input-module {
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
  padding: var(--space-2);
}

.source-mode-tabs {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
}

.source-mode-tab {
  border: 0;
  background: #ffffff;
  color: var(--text-sub);
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
}

.source-mode-tab + .source-mode-tab {
  border-left: 1px solid var(--line);
}

.source-mode-tab.is-active {
  background: #eaf1ff;
  color: #0f4cbf;
  font-weight: 600;
}

.source-mode-panel {
  display: grid;
  gap: var(--space-1);
}

.source-mode-panel[hidden],
.source-mode-panel.is-hidden {
  display: none;
}

.source-mode-panel input[type='file'] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #ffffff;
}

.source-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.source-list {
  display: grid;
  gap: var(--space-2);
}

.source-items {
  display: grid;
  gap: var(--space-2);
}

.source-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: var(--space-2);
  display: grid;
  gap: 8px;
}

.source-item-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-2);
}

.source-item-head .btn {
  min-height: 30px;
  padding: 6px 10px;
  font-size: 12px;
}

.source-item-title {
  font-weight: 600;
  word-break: break-all;
}

.source-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  font-size: 13px;
  color: var(--text-sub);
}

.source-item-status,
.source-item-url {
  font-size: 13px;
  color: var(--text-sub);
  word-break: break-all;
}

.source-item-error {
  font-size: 13px;
  color: var(--error);
}

.source-status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.source-status.is-idle {
  background: #eef2f7;
  color: #475569;
}

.source-status.is-loading {
  background: #e3edff;
  color: #174ea6;
}

.source-status.is-ready {
  background: #e5f8ef;
  color: #0c7a4f;
}

.source-status.is-error {
  background: #ffe9e6;
  color: #a02a1c;
}

.source-item-preview video {
  width: min(260px, 100%);
  display: block;
  border-radius: 6px;
  background: #000000;
}

.source-input-tip {
  min-height: 18px;
  font-size: 13px;
}

.source-input-tip.source-input-tip-error {
  color: var(--error);
}

.action-form-audio-separation textarea[readonly] {
  background: var(--bg-soft);
}

.enhancement-pilot {
  display: grid;
  gap: var(--space-2);
}

.pilot-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
  padding: var(--space-2);
  display: grid;
  gap: var(--space-2);
}

.enhancement-mode-panel[hidden],
.enhancement-mode-panel.is-hidden {
  display: none;
}

.source-input-module input[type='text'],
.enh-manual-grid input[type='text'],
.enh-label-editor input[type='text'],
#enh-origin-url-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 13px;
  background: #ffffff;
}

.enh-manual-grid {
  display: grid;
  gap: var(--space-2);
}

.enh-manual-grid label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

.enh-json-grid {
  display: grid;
  gap: var(--space-2);
  align-items: start;
}

.enh-json-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: var(--space-2);
  display: grid;
  gap: var(--space-2);
  align-content: start;
  min-width: 0;
}

.enh-json-card textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font-size: 13px;
  resize: vertical;
  background: #ffffff;
  min-height: 220px;
}

.enh-json-card .result-panel {
  margin-top: 0;
  min-height: 188px;
  display: grid;
  grid-template-rows: auto auto minmax(84px, 1fr);
  gap: 8px;
}

#enh-result-panel-1 .code-block,
#enh-result-panel-2 .code-block,
#enh-poll-panel-1 .code-block,
#enh-poll-panel-2 .code-block {
  min-height: 84px;
  max-height: 240px;
  max-width: 100%;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.enh-inline-error {
  min-height: 18px;
  color: var(--error);
  font-size: 13px;
}

.enh-compare-grid {
  display: grid;
  gap: var(--space-2);
}

.enh-compare-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: var(--space-2);
  display: grid;
  gap: var(--space-2);
  min-width: 0;
  align-content: start;
}

.enh-compare-title {
  font-weight: 700;
}

.enh-label-editor {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

.enh-compare-card video {
  width: 100%;
  border-radius: 8px;
  background: #000000;
  min-height: 180px;
}

.enh-meta {
  display: grid;
  gap: 4px;
  font-size: 13px;
  color: var(--text-sub);
}

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

.enh-sync-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.enh-sync-bar label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
}

.enh-sync-bar select,
.enh-sync-bar input[type='range'] {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: 6px 8px;
}

.enh-sync-bar input[type='range'] {
  padding: 0;
  width: 120px;
}

.enh-compare-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

#enh-open-compare-fullscreen-btn {
  min-width: 180px;
}

.enh-fs-overlay {
  position: fixed;
  inset: 0;
  z-index: 1600;
  background: #000000;
  display: none;
  grid-template-rows: minmax(0, 1fr) auto;
}

.enh-fs-overlay[hidden] {
  display: none;
}

.enh-fs-overlay.is-active {
  display: grid;
}

body.enh-fs-open {
  overflow: hidden;
}

.enh-fs-stage {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1px;
  background: rgba(203, 213, 225, 0.28);
}

.enh-fs-right-stack {
  min-height: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1px;
  background: rgba(203, 213, 225, 0.28);
}

.enh-fs-panel {
  position: relative;
  background: #000000;
  min-width: 0;
  min-height: 0;
  border: 1px solid transparent;
  cursor: pointer;
}

.enh-fs-panel.is-audio-active {
  border-color: #7da7ff;
  box-shadow: inset 0 0 0 1px #7da7ff;
}

.enh-fs-panel video {
  width: 100%;
  height: 100%;
  display: block;
  background: #000000;
  object-fit: contain;
}

.enh-fs-label-chip {
  position: absolute;
  top: 10px;
  left: 10px;
  max-width: calc(100% - 20px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(15, 23, 42, 0.68);
  color: #ffffff;
  font-size: 12px;
  line-height: 1.2;
  pointer-events: none;
}

.enh-fs-label-chip.is-in-bar {
  top: 4px;
  left: 6px;
  background: rgba(0, 0, 0, 0.45);
}

.enh-fs-label-chip.is-audio-active {
  background: rgba(18, 67, 158, 0.76);
}

.enh-fs-speaker {
  display: none;
  font-size: 11px;
}

.enh-fs-label-chip.is-audio-active .enh-fs-speaker {
  display: inline-flex;
}

.enh-fs-label-text {
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.enh-fs-control-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.36);
  background: rgba(2, 6, 23, 0.92);
  color: #e2e8f0;
}

.enh-fs-control-bar label {
  font-size: 13px;
  color: #cbd5e1;
}

.enh-fs-control-bar .btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  color: #f8fafc;
}

.enh-fs-control-bar .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
}

.enh-fs-control-bar select,
.enh-fs-control-bar input[type='range'] {
  border: 1px solid rgba(148, 163, 184, 0.56);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.92);
  color: #e2e8f0;
  padding: 6px 8px;
}

.enh-fs-control-bar input[type='range'] {
  flex: 1 1 260px;
  min-width: 160px;
  padding: 0;
}

@media (min-width: 900px) {
  .enh-json-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .enh-compare-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}