:root {
  --video-bg: #0b1016;
  --video-bg-soft: #121923;
  --video-text: #edf4f2;
  --video-muted: #98a7ad;
  --video-panel: rgba(17, 25, 34, 0.88);
  --video-panel-strong: rgba(12, 18, 24, 0.95);
  --video-border: rgba(203, 220, 218, 0.12);
  --video-control: rgba(255, 255, 255, 0.06);
  --video-control-border: rgba(203, 220, 218, 0.14);
  --video-accent: #39c5b6;
  --video-accent-strong: #20a698;
  --video-warn: #e3a33b;
  --video-danger: #e36b5f;
  --video-shadow: 0 24px 60px rgba(0, 0, 0, 0.26);
  --bg: var(--video-bg);
  --bg-glow: #16302d;
  --fg: var(--video-text);
  --fg-muted: var(--video-muted);
  --primary: var(--video-accent-strong);
  --accent: var(--video-accent);
  --card-bg: var(--video-panel);
  --border: var(--video-border);
  --control-bg: var(--video-control);
  --control-border: var(--video-control-border);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

html[data-theme="light"] {
  --video-bg: #eef4f1;
  --video-bg-soft: #dfeae6;
  --video-text: #172523;
  --video-muted: #5e716d;
  --video-panel: rgba(255, 255, 255, 0.88);
  --video-panel-strong: rgba(249, 252, 250, 0.98);
  --video-border: rgba(32, 80, 74, 0.13);
  --video-control: rgba(255, 255, 255, 0.76);
  --video-control-border: rgba(32, 80, 74, 0.16);
  --video-accent: #1b8f82;
  --video-accent-strong: #116f66;
  --video-warn: #a46a10;
  --video-danger: #b84c42;
  --video-shadow: 0 18px 44px rgba(33, 64, 58, 0.13);
  --bg: var(--video-bg);
  --bg-glow: #cce6df;
  --fg: var(--video-text);
  --fg-muted: var(--video-muted);
  --primary: var(--video-accent-strong);
  --accent: var(--video-accent);
  --card-bg: var(--video-panel);
  --border: var(--video-border);
  --control-bg: var(--video-control);
  --control-border: var(--video-control-border);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(57, 197, 182, 0.12), transparent 34%),
    linear-gradient(315deg, rgba(227, 163, 59, 0.08), transparent 34%),
    linear-gradient(180deg, var(--video-bg), #071014 82%);
  color: var(--video-text);
}

html[data-theme="light"] body {
  background:
    linear-gradient(135deg, rgba(27, 143, 130, 0.12), transparent 34%),
    linear-gradient(315deg, rgba(164, 106, 16, 0.08), transparent 34%),
    linear-gradient(180deg, var(--video-bg), #f9fcfb 82%);
}

.video-page {
  min-height: 100vh;
}

[hidden] {
  display: none !important;
}

.video-container {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.video-header {
  padding: 1rem 0 1.2rem;
}

.video-back-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.62rem 0.9rem;
  border: 1px solid var(--video-control-border);
  border-radius: 999px;
  background: var(--video-control);
  color: var(--video-text);
  text-decoration: none;
}

.video-back-link:hover,
.video-back-link:focus {
  border-color: rgba(57, 197, 182, 0.44);
}

.video-hero {
  display: grid;
  gap: 0.8rem;
  max-width: 820px;
  padding: 1.7rem 0 0.7rem;
}

.video-kicker {
  margin: 0;
  color: var(--video-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.video-hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.video-intro {
  max-width: 760px;
  margin: 0;
  color: var(--video-muted);
  font-size: 1.04rem;
  line-height: 1.7;
}

.video-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
  gap: 1rem;
  align-items: start;
  padding: 0.5rem 0 4rem;
}

.video-stage-panel,
.video-tool-panel {
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-panel);
  box-shadow: var(--video-shadow);
  backdrop-filter: blur(18px);
}

.video-stage-panel {
  display: grid;
  gap: 0.9rem;
  padding: 1rem;
}

.video-tool-panel {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.video-dropzone {
  border: 1px dashed rgba(57, 197, 182, 0.46);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(57, 197, 182, 0.11), rgba(57, 197, 182, 0.035)),
    var(--video-panel-strong);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.video-dropzone.is-dragging {
  border-color: rgba(227, 163, 59, 0.76);
  background:
    linear-gradient(180deg, rgba(227, 163, 59, 0.14), rgba(227, 163, 59, 0.04)),
    var(--video-panel-strong);
  transform: translateY(-2px);
}

.video-drop-label {
  min-height: 248px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.7rem;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
}

.video-dropzone.is-compact .video-drop-label {
  min-height: 86px;
  grid-template-columns: auto minmax(0, 1fr);
  place-items: center start;
  text-align: left;
}

.video-dropzone.is-compact .video-drop-icon {
  width: 44px;
  height: 44px;
}

.video-dropzone.is-compact .video-drop-copy {
  display: none;
}

.video-url-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: end;
  padding: 0.85rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-panel-strong);
}

.video-url-field {
  display: grid;
  gap: 0.42rem;
}

.video-url-field span {
  color: var(--video-muted);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-url-field input {
  width: 100%;
  min-height: 44px;
  padding: 0.64rem 0.78rem;
  border: 1px solid var(--video-control-border);
  border-radius: 8px;
  background: var(--video-control);
  color: var(--video-text);
  outline: none;
}

.video-url-field input:focus {
  border-color: rgba(57, 197, 182, 0.55);
}

.video-discovery-panel,
.video-queue-panel {
  display: grid;
  gap: 0.75rem;
  padding: 0.85rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-panel-strong);
}

.video-discovery-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.video-discovery-head h2,
.video-discovery-head p {
  margin: 0;
}

.video-discovery-head h2 {
  font-size: 1rem;
}

.video-discovery-head p {
  color: var(--video-muted);
  font-size: 0.86rem;
}

.video-discovery-list,
.video-queue-list {
  display: grid;
  gap: 0.55rem;
  max-height: 320px;
  overflow: auto;
}

.video-candidate-card,
.video-queue-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-control);
}

.video-queue-card {
  grid-template-columns: minmax(0, 1fr) auto;
}

.video-queue-card.is-active {
  border-color: rgba(57, 197, 182, 0.58);
  box-shadow: inset 0 0 0 1px rgba(57, 197, 182, 0.18);
}

.video-candidate-card input {
  width: 18px;
  height: 18px;
  accent-color: var(--video-accent);
}

.video-candidate-copy,
.video-queue-copy {
  min-width: 0;
  display: grid;
  gap: 0.24rem;
}

.video-candidate-copy strong,
.video-queue-copy strong {
  color: var(--video-text);
  overflow-wrap: anywhere;
}

.video-candidate-copy span,
.video-queue-copy span {
  color: var(--video-muted);
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.video-candidate-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 0.24rem 0.55rem;
  border: 1px solid rgba(57, 197, 182, 0.24);
  border-radius: 999px;
  color: var(--video-accent);
  font-size: 0.78rem;
  font-weight: 800;
}

.video-failure-card {
  display: grid;
  gap: 0.35rem;
  padding: 0.85rem;
  border: 1px solid rgba(227, 107, 95, 0.26);
  border-radius: 8px;
  background: rgba(227, 107, 95, 0.08);
}

.video-failure-card strong {
  color: var(--video-danger);
}

.video-failure-card span,
.video-failure-card small {
  color: var(--video-muted);
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.video-drop-icon {
  width: 58px;
  height: 58px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(57, 197, 182, 0.14);
  color: var(--video-accent);
}

.video-drop-icon svg,
.video-icon-button svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.video-drop-title {
  color: var(--video-text);
  font-size: 1.08rem;
  font-weight: 800;
}

.video-drop-copy {
  max-width: 560px;
  color: var(--video-muted);
  line-height: 1.6;
}

.video-preview-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: #05090c;
}

.video-preview-shell video {
  display: none;
}

.video-preview-canvas {
  width: 100%;
  display: block;
  background: #05090c;
  touch-action: none;
  cursor: crosshair;
}

.video-preview-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  color: var(--video-muted);
  pointer-events: none;
}

.video-preview-empty[hidden] {
  display: none;
}

.video-player-bar {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-panel-strong);
}

.video-icon-button {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(57, 197, 182, 0.3);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--video-accent-strong), var(--video-accent));
  color: #f8fffd;
  cursor: pointer;
}

.video-time {
  color: var(--video-muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
}

.video-seek,
.video-range-field input {
  width: 100%;
  accent-color: var(--video-accent);
}

.video-file-summary,
.video-path-summary,
.video-env-panel {
  display: grid;
  gap: 0.24rem;
  padding: 0.95rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-panel-strong);
}

.video-env-panel {
  gap: 0.75rem;
  border-color: rgba(227, 163, 59, 0.34);
  background:
    linear-gradient(180deg, rgba(227, 163, 59, 0.1), rgba(227, 163, 59, 0.035)),
    var(--video-panel-strong);
}

.video-env-panel.is-ready {
  border-color: rgba(57, 197, 182, 0.32);
  background:
    linear-gradient(180deg, rgba(57, 197, 182, 0.1), rgba(57, 197, 182, 0.035)),
    var(--video-panel-strong);
}

.video-env-copy {
  min-width: 0;
  display: grid;
  gap: 0.24rem;
}

.video-file-summary span,
.video-path-summary span,
.video-env-copy span,
.video-file-summary small,
.video-path-summary small,
.video-env-copy small,
.video-status,
.video-number-field span,
.video-range-field span,
.video-select-field span,
.video-check-field,
.video-region-card small {
  color: var(--video-muted);
  font-size: 0.84rem;
}

.video-file-summary span,
.video-path-summary span,
.video-env-copy span,
.video-number-field span,
.video-range-field span,
.video-select-field span {
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-file-summary strong,
.video-path-summary strong,
.video-path-summary small,
.video-env-copy strong {
  overflow: hidden;
  color: var(--video-text);
  overflow-wrap: anywhere;
}

.video-file-summary strong {
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-path-summary small {
  color: var(--video-muted);
}

.video-env-copy small {
  line-height: 1.5;
}

.video-tool-section {
  display: grid;
  gap: 0.75rem;
}

.video-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.video-tool-section h2 {
  margin: 0;
  font-size: 1.02rem;
}

.video-region-list {
  display: grid;
  gap: 0.55rem;
}

.video-region-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.72rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-control);
}

.video-region-card.is-active {
  border-color: rgba(57, 197, 182, 0.58);
  box-shadow: inset 0 0 0 1px rgba(57, 197, 182, 0.18);
}

.video-region-card strong {
  display: block;
  color: var(--video-text);
  font-size: 0.92rem;
}

.video-region-card button {
  min-height: 34px;
  padding: 0.4rem 0.62rem;
}

.video-region-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.video-number-field,
.video-range-field,
.video-select-field {
  display: grid;
  gap: 0.42rem;
}

.video-number-field input,
.video-select-field select {
  width: 100%;
  min-height: 42px;
  padding: 0.58rem 0.65rem;
  border: 1px solid var(--video-control-border);
  border-radius: 8px;
  background: var(--video-control);
  color: var(--video-text);
  outline: none;
}

.video-select-field select option {
  color: #172523;
}

.video-number-field input:focus,
.video-select-field select:focus {
  border-color: rgba(57, 197, 182, 0.55);
}

.video-mode-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
  padding: 0.3rem;
  border: 1px solid var(--video-control-border);
  border-radius: 8px;
  background: var(--video-panel-strong);
}

.video-mode-button,
.video-secondary-button,
.video-primary-button,
.video-danger-button {
  appearance: none;
  min-height: 42px;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.video-mode-button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--video-muted);
}

.video-mode-button.is-active {
  border-color: rgba(57, 197, 182, 0.42);
  background: rgba(57, 197, 182, 0.12);
  color: var(--video-text);
}

.video-secondary-button {
  padding: 0.58rem 0.78rem;
  border: 1px solid var(--video-control-border);
  background: var(--video-control);
  color: var(--video-text);
}

.video-primary-button {
  width: 100%;
  border: 1px solid rgba(57, 197, 182, 0.3);
  background: linear-gradient(135deg, var(--video-accent-strong), var(--video-accent));
  color: #f8fffd;
  font-weight: 800;
}

.video-danger-button {
  width: 100%;
  padding: 0.58rem 0.78rem;
  border: 1px solid rgba(227, 107, 95, 0.36);
  background: rgba(227, 107, 95, 0.12);
  color: var(--video-danger);
  font-weight: 800;
}

.video-mode-button:hover,
.video-mode-button:focus,
.video-secondary-button:hover,
.video-secondary-button:focus,
.video-primary-button:hover,
.video-primary-button:focus,
.video-danger-button:hover,
.video-danger-button:focus {
  transform: translateY(-1px);
}

.video-mode-button:disabled,
.video-secondary-button:disabled,
.video-primary-button:disabled,
.video-danger-button:disabled,
.video-number-field input:disabled,
.video-select-field select:disabled,
.video-range-field input:disabled,
.video-check-field input:disabled {
  opacity: 0.56;
  cursor: not-allowed;
  transform: none;
}

.video-range-field {
  grid-template-columns: auto minmax(0, 1fr) 42px;
  align-items: center;
}

.video-range-field strong {
  color: var(--video-text);
  text-align: right;
}

.video-check-field {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}

.video-check-field input {
  accent-color: var(--video-accent);
}

.video-progress {
  width: 100%;
  height: 10px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: var(--video-control);
}

.video-progress::-webkit-progress-bar {
  background: var(--video-control);
}

.video-progress::-webkit-progress-value {
  background: var(--video-accent);
}

.video-progress::-moz-progress-bar {
  background: var(--video-accent);
}

.video-status {
  min-height: 1.35rem;
  margin: 0;
  line-height: 1.55;
}

.video-status.is-error {
  color: var(--video-danger);
}

.video-status.is-success {
  color: var(--video-accent);
}

.video-env-modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(5, 9, 12, 0.72);
  backdrop-filter: blur(12px);
}

.video-env-modal-card {
  width: min(100%, 540px);
  display: grid;
  gap: 0.85rem;
  padding: 1.1rem;
  border: 1px solid rgba(227, 163, 59, 0.38);
  border-radius: 8px;
  background: var(--video-panel-strong);
  box-shadow: var(--video-shadow);
}

.video-env-modal-card h2,
.video-env-modal-card p {
  margin: 0;
}

.video-env-modal-card h2 {
  font-size: 1.25rem;
}

.video-env-modal-card p {
  color: var(--video-muted);
  line-height: 1.65;
}

.video-env-warning {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.24rem 0.58rem;
  border: 1px solid rgba(227, 163, 59, 0.38);
  border-radius: 999px;
  color: var(--video-warn);
  background: rgba(227, 163, 59, 0.1);
  font-size: 0.8rem;
}

.video-env-command {
  max-height: 180px;
  overflow: auto;
  margin: 0;
  padding: 0.78rem;
  border: 1px solid var(--video-border);
  border-radius: 8px;
  background: var(--video-control);
  color: var(--video-text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.video-env-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.65rem;
  align-items: center;
}

@media (prefers-reduced-motion: reduce) {
  .video-dropzone,
  .video-mode-button,
  .video-secondary-button,
  .video-primary-button,
  .video-danger-button {
    transition: none;
  }
}

@media (max-width: 960px) {
  .video-workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .video-container {
    padding: 0 1rem;
  }

  .video-header {
    padding-top: 0.5rem;
  }

  .video-drop-label {
    min-height: 210px;
    padding: 1.35rem;
  }

  .video-player-bar {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .video-player-bar .video-time:first-of-type {
    display: none;
  }

  .video-region-grid,
  .video-mode-group {
    grid-template-columns: 1fr 1fr;
  }

  .video-section-head {
    align-items: stretch;
    flex-direction: column;
  }

  .video-url-panel {
    grid-template-columns: 1fr;
  }

  .video-discovery-head,
  .video-candidate-card,
  .video-queue-card {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .video-discovery-head {
    flex-direction: column;
  }

  .video-secondary-button {
    width: 100%;
  }

  .video-env-actions {
    grid-template-columns: 1fr;
  }
}