.videobook {
  width: min(1400px, 95vw);
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1rem;
}

.videobook__header {
  display: grid;
  gap: 0.4rem;
}

.videobook__title {
  margin: 0;
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  line-height: 1.2;
}

.videobook__subtitle {
  margin: 0;
  color: #4b5563;
}

.vb-card {
  border: 1px solid #d8dee7;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.06);
  padding: 0.9rem;
  display: grid;
  gap: 0.85rem;
}

.vb-card__head {
  display: flex;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.vb-card__head h2 {
  margin: 0;
  font-size: 1.05rem;
}

.vb-status {
  margin: 0;
  color: #1f2937;
  font-weight: 600;
}

.vb-help {
  margin: 0;
  color: #5b6472;
  font-size: 0.9rem;
}

.vb-form-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.vb-form-grid--two {
  grid-template-columns: 2fr 1fr;
}

.vb-field {
  display: grid;
  gap: 0.35rem;
}

.vb-field > span {
  font-size: 0.86rem;
  color: #374151;
  font-weight: 600;
}

.vb-field input,
.vb-field select,
.vb-field textarea {
  border: 1px solid #c9d3e2;
  border-radius: 8px;
  padding: 0.5rem 0.55rem;
  font: inherit;
  color: #101828;
  background: #ffffff;
}

.vb-field textarea {
  resize: vertical;
  min-height: 7rem;
}

.vb-field--inline {
  min-width: 260px;
}

.vb-field--wide {
  grid-column: 1 / -1;
}

.vb-actions {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  align-items: center;
}

.vb-actions--dense .vb-field--inline {
  min-width: 180px;
}

#vb-builder-render-progress[hidden] {
  display: none;
}

#vb-builder-paragraph-diagnostics[hidden] {
  display: none;
}

#vb-builder-pre-render-preview-panel[hidden] {
  display: none;
}

.vb-render-progress {
  border: 1px solid #d6e2f3;
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  background: #fcfdff;
  display: grid;
  gap: 0.35rem;
}

.vb-render-progress__label {
  margin: 0;
  font-size: 0.88rem;
  color: #1f2937;
  font-weight: 700;
}

.vb-render-progress__meta {
  margin: 0;
  font-size: 0.8rem;
  color: #5b6472;
}

.vb-render-progress__track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #e5ecf7;
  overflow: hidden;
  border: 1px solid #c9d3e2;
}

.vb-render-progress__fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb 0%, #0f4ba8 100%);
  transition: width 220ms linear;
}

.vb-render-progress--warning .vb-render-progress__fill {
  background: linear-gradient(90deg, #d97706 0%, #b45309 100%);
}

.vb-render-progress--error .vb-render-progress__fill {
  background: linear-gradient(90deg, #dc2626 0%, #b42318 100%);
}

.vb-render-progress--done .vb-render-progress__fill {
  background: linear-gradient(90deg, #16a34a 0%, #15803d 100%);
}

.vb-paragraph-diagnostics {
  border: 1px solid #c9d3e2;
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  display: grid;
  gap: 0.5rem;
}

.vb-paragraph-diagnostics__head {
  display: grid;
  gap: 0.18rem;
}

.vb-paragraph-diagnostics__title {
  margin: 0;
  color: #1e293b;
  font-weight: 800;
  font-size: 0.9rem;
}

.vb-paragraph-diagnostics__meta,
.vb-paragraph-diagnostics__more {
  margin: 0;
  color: #526173;
  font-size: 0.8rem;
}

.vb-paragraph-diagnostics__groups {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.25rem;
  color: #334155;
  font-size: 0.82rem;
}

.vb-paragraph-diagnostics__groups span {
  color: #64748b;
}

.vb-pre-render-preview {
  border: 1px solid #c9d3e2;
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  background: #ffffff;
  display: grid;
  gap: 0.65rem;
}

.vb-pre-render-preview__head {
  display: grid;
  gap: 0.2rem;
}

.vb-pre-render-preview__title {
  margin: 0;
  color: #1e293b;
  font-size: 0.92rem;
  font-weight: 800;
}

.vb-pre-render-preview__meta {
  margin: 0;
  color: #526173;
  font-size: 0.8rem;
}

.vb-pre-render-preview__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.65rem;
}

.vb-pre-render-preview__frame {
  border: 1px solid #d7e0ec;
  border-radius: 8px;
  overflow: hidden;
  background: #f8fafc;
}

.vb-pre-render-preview__frame img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #ffffff;
}

.vb-pre-render-preview__caption {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0.45rem;
  color: #334155;
  font-size: 0.78rem;
}

#vb-builder-chapters-preview {
  flex: 1 1 320px;
}

.vb-btn {
  border: 1px solid #c9d3e2;
  background: #ffffff;
  color: #0f172a;
  border-radius: 8px;
  padding: 0.48rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.vb-btn:hover {
  background: #f8fbff;
}

.vb-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.vb-btn--primary {
  border-color: #0f4ba8;
  background: #0f4ba8;
  color: #ffffff;
}

.vb-btn--primary:hover {
  background: #0c3e8b;
}

.vb-checkbox {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  color: #374151;
  font-size: 0.9rem;
}

.vb-upload-box {
  border: 1px dashed #b8c4d6;
  border-radius: 10px;
  padding: 0.65rem;
  background: #fafcff;
  display: grid;
  gap: 0.4rem;
}

.vb-table-wrap {
  width: 100%;
  overflow: auto;
}

.vb-production-profile-table-wrap {
  border: 1px solid #d8dee7;
  border-radius: 8px;
}

.vb-production-profile-table th,
.vb-production-profile-table td {
  white-space: nowrap;
}

.vb-production-profile-row {
  cursor: pointer;
}

.vb-production-profile-row:hover {
  background: #f5f8fc;
}

.vb-production-profile-row.is-selected {
  background: #eef5ff;
}

.vb-production-profile-row.is-selected td:first-child {
  box-shadow: inset 4px 0 0 #2563eb;
}

.vb-production-profile-pick {
  border: 0;
  background: transparent;
  padding: 0;
  color: #0f172a;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.vb-chapter-panel {
  border: 1px solid #d6e2f3;
  border-radius: 10px;
  background: #fcfdff;
  padding: 0.65rem;
  display: grid;
  gap: 0.6rem;
}

.vb-table-empty {
  text-align: center;
  color: #667085;
  font-size: 0.84rem;
  padding: 0.7rem 0.5rem;
}

.vb-chapter-row td {
  vertical-align: top;
}

.vb-pipeline {
  border: 1px solid #d6e2f3;
  border-radius: 10px;
  padding: 0.6rem;
  display: grid;
  gap: 0.55rem;
  background: #fcfdff;
}

.vb-pipeline:empty {
  display: none;
}

.vb-pipeline-summary {
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  display: grid;
  gap: 0.2rem;
}

.vb-pipeline-summary--ok {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.vb-pipeline-summary--warn {
  background: #fff7ed;
  border: 1px solid #fed7aa;
}

.vb-pipeline-summary__title {
  margin: 0;
  font-weight: 700;
  color: #1e293b;
}

.vb-pipeline-summary__meta {
  margin: 0;
  color: #334155;
  font-size: 0.85rem;
}

.vb-pipeline-steps {
  margin: 0;
  padding-left: 1.05rem;
  display: grid;
  gap: 0.25rem;
}

.vb-pipeline-step {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: #334155;
}

.vb-pipeline-step__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 4.4rem;
  border-radius: 999px;
  border: 1px solid #d4dbe7;
  padding: 0.1rem 0.45rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.vb-pipeline-step--ok .vb-pipeline-step__badge {
  background: #ecfdf3;
  border-color: #86efac;
  color: #166534;
}

.vb-pipeline-step--forced .vb-pipeline-step__badge {
  background: #fff7ed;
  border-color: #fdba74;
  color: #9a3412;
}

.vb-pipeline-step--failed .vb-pipeline-step__badge {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #991b1b;
}

.vb-pipeline-step--skipped .vb-pipeline-step__badge {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #475569;
}

.vb-pipeline-step__name {
  font-weight: 700;
  color: #1f2937;
}

.vb-pipeline-step__detail {
  color: #475569;
}

.vb-package-report {
  border: 1px solid #d6e2f3;
  border-radius: 10px;
  padding: 0.6rem;
  display: grid;
  gap: 0.5rem;
  background: #fcfdff;
}

.vb-package-report:empty {
  display: none;
}

.vb-package-summary {
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  display: grid;
  gap: 0.2rem;
}

.vb-package-summary--ok {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.vb-package-summary--warn {
  background: #fff7ed;
  border: 1px solid #fed7aa;
}

.vb-package-summary__title {
  margin: 0;
  font-weight: 700;
  color: #1e293b;
}

.vb-package-summary__meta {
  margin: 0;
  color: #334155;
  font-size: 0.84rem;
}

.vb-package-issues {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
}

.vb-package-issue {
  font-size: 0.8rem;
}

.vb-package-issue--error {
  color: #b42318;
}

.vb-package-issue--warning {
  color: #92400e;
}

.vb-package-empty {
  margin: 0;
  font-size: 0.8rem;
  color: #64748b;
}

.vb-validation {
  border: 1px solid #d6e2f3;
  border-radius: 10px;
  padding: 0.6rem;
  display: grid;
  gap: 0.55rem;
  background: #fcfdff;
}

.vb-validation:empty {
  display: none;
}

.vb-validation-summary {
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  display: grid;
  gap: 0.2rem;
}

.vb-validation-summary--ok {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.vb-validation-summary--warn {
  background: #fff7ed;
  border: 1px solid #fed7aa;
}

.vb-validation-summary__title {
  margin: 0;
  font-weight: 700;
  color: #1e293b;
}

.vb-validation-summary__meta {
  margin: 0;
  color: #334155;
  font-size: 0.85rem;
}

.vb-validation-render-meta {
  margin: 0;
  color: #475569;
  font-size: 0.78rem;
}

.vb-validation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.vb-validation-columns {
  display: grid;
  gap: 0.45rem;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.vb-validation-column {
  border: 1px solid #dbe4f0;
  border-radius: 8px;
  padding: 0.42rem 0.5rem;
  background: #ffffff;
  display: grid;
  gap: 0.16rem;
}

.vb-validation-column__title {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: #334155;
}

.vb-validation-column__stats {
  margin: 0;
  font-size: 0.82rem;
  color: #0f172a;
}

.vb-validation-column__meta {
  margin: 0;
  font-size: 0.75rem;
  color: #64748b;
}

.vb-validation-issues {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
}

.vb-validation-issue {
  font-size: 0.8rem;
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
}

.vb-validation-jump-issue {
  white-space: nowrap;
  margin-top: 0.05rem;
}

.vb-validation-issue-message {
  line-height: 1.35;
}

.vb-validation-issue--error {
  color: #b42318;
}

.vb-validation-issue--warning {
  color: #92400e;
}

.vb-validation-overflow {
  margin: 0;
  font-size: 0.78rem;
  color: #64748b;
}

.vb-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 1120px;
}

.vb-table th,
.vb-table td {
  border-bottom: 1px solid #e7ecf3;
  text-align: left;
  vertical-align: top;
  padding: 0.45rem;
}

.vb-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: #334155;
  background: #f8fbff;
}

.vb-row-highlight > td {
  background: #fff8db;
}

.vb-slide-id-wrap {
  display: grid;
  gap: 0.45rem;
}

.vb-slide-id-wrap input {
  width: 20rem;
  max-width: 100%;
}

.vb-cell {
  display: grid;
  gap: 0.4rem;
  min-width: 160px;
}

.vb-slide-diagnostics-row.is-hidden {
  display: none;
}

.vb-slide-diagnostics-row td {
  background: #f8fbff;
}

.vb-slide-diagnostics {
  display: grid;
  gap: 0.5rem;
}

.vb-diag-title {
  margin: 0;
  font-weight: 700;
  color: #22324d;
  font-size: 0.86rem;
}

.vb-diag-list {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
}

.vb-diag-item {
  font-size: 0.82rem;
  color: #344054;
}

.vb-diag-item--ok {
  color: #12633a;
}

.vb-diag-item--warn {
  color: #93420f;
}

.vb-diag-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.vb-diag-preview {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.15rem;
}

.vb-diag-preview__title {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  color: #1f2f4d;
}

.vb-diag-preview__canvas {
  border: 1px solid #d7dfeb;
  border-radius: 8px;
  background: #ffffff;
  overflow: hidden;
  padding: 0.35rem;
}

.vb-diag-preview__canvas svg {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
}

.vb-cell__top {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.vb-icon {
  font-size: 0.95rem;
  line-height: 1;
}

.vb-icon--missing {
  color: #c53030;
}

.vb-icon--uploaded {
  color: #b7791f;
}

.vb-icon--approved {
  color: #1f7a1f;
}

.vb-icon--rejected {
  color: #9f1239;
}

.vb-status-label {
  font-size: 0.8rem;
  color: #344054;
}

.vb-mini-btn {
  border: 1px solid #c9d3e2;
  background: #ffffff;
  border-radius: 6px;
  padding: 0.25rem 0.45rem;
  font-size: 0.78rem;
  cursor: pointer;
}

.vb-mini-btn:hover {
  background: #f8fbff;
}

.vb-cell select {
  border: 1px solid #c9d3e2;
  border-radius: 6px;
  padding: 0.28rem 0.35rem;
  font-size: 0.8rem;
  background: #ffffff;
}

.vb-text-preview {
  font-size: 0.78rem;
  color: #374151;
  line-height: 1.3;
  max-height: 3.5em;
  overflow: hidden;
}

.vb-hidden-file {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.vb-library-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.vb-library-card {
  border: 1px solid #d7dfeb;
  border-radius: 12px;
  overflow: hidden;
  background: #ffffff;
  display: grid;
}

.vb-library-card--busy {
  border-color: #bfd4f6;
  box-shadow: 0 0 0 1px #dbeafe inset;
}

.vb-library-card[role="button"] {
  cursor: pointer;
}

.vb-library-card:focus-visible {
  outline: 3px solid #93c5fd;
  outline-offset: 2px;
}

.vb-library-cover {
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
  background: #eef2f8;
}

.vb-library-cover--empty {
  display: grid;
  place-items: center;
  color: #667085;
  font-size: 0.9rem;
}

.vb-library-meta {
  padding: 0.7rem;
  display: grid;
  gap: 0.35rem;
}

.vb-library-title {
  margin: 0;
  font-size: 1rem;
}

.vb-library-author,
.vb-library-slug {
  margin: 0;
  color: #4b5563;
  font-size: 0.85rem;
}

.vb-library-publication {
  margin: 0;
  font-size: 0.74rem;
  width: fit-content;
  border-radius: 999px;
  padding: 0.12rem 0.45rem;
  text-transform: lowercase;
  letter-spacing: 0.01em;
}

.vb-library-publication--published {
  color: #155e75;
  background: #cffafe;
}

.vb-library-publication--draft {
  color: #7c2d12;
  background: #ffedd5;
}

.vb-library-readiness {
  margin: 0;
  font-size: 0.8rem;
  border-radius: 999px;
  padding: 0.16rem 0.5rem;
  width: fit-content;
}

.vb-library-readiness--ok {
  color: #166534;
  background: #dcfce7;
}

.vb-library-readiness--mid {
  color: #92400e;
  background: #ffedd5;
}

.vb-library-readiness--warn {
  color: #991b1b;
  background: #fee2e2;
}

.vb-library-playback {
  margin: 0;
  font-size: 0.78rem;
  border-radius: 999px;
  padding: 0.16rem 0.5rem;
  width: fit-content;
}

.vb-library-playback--video {
  color: #1d4ed8;
  background: #dbeafe;
}

.vb-library-playback--timeline {
  color: #475467;
  background: #eaecf0;
}

.vb-library-progress {
  margin: 0;
  font-size: 0.78rem;
  color: #475467;
}

.vb-library-validation {
  border-radius: 8px;
  padding: 0.28rem 0.42rem;
  border: 1px solid #dbe2ec;
  background: #f8fafc;
}

.vb-library-validation--ok {
  border-color: #86efac;
  background: #ecfdf3;
  color: #166534;
}

.vb-library-validation--warn,
.vb-library-validation--stale {
  border-color: #fdba74;
  background: #fff7ed;
  color: #9a3412;
}

.vb-library-validation--error {
  border-color: #fca5a5;
  background: #fef2f2;
  color: #991b1b;
}

.vb-library-validation--none {
  border-color: #d7dfeb;
  background: #f8fafc;
  color: #475467;
}

.vb-library-validation-details {
  font-size: 0.76rem;
  color: #344054;
}

.vb-library-validation-details summary {
  cursor: pointer;
}

.vb-library-validation-list {
  margin: 0.3rem 0 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.2rem;
}

.vb-library-validation-item {
  display: grid;
  gap: 0.12rem;
}

.vb-library-validation-item--error {
  color: #991b1b;
}

.vb-library-validation-item--warning {
  color: #9a3412;
}

.vb-library-validation-slide {
  font-weight: 600;
}

.vb-library-validation-link {
  width: fit-content;
  font-size: 0.72rem;
}

.vb-library-pipeline {
  margin: 0;
  font-size: 0.78rem;
  border-radius: 8px;
  padding: 0.3rem 0.45rem;
  border: 1px solid #dbe2ec;
  background: #f8fafc;
  color: #334155;
}

.vb-library-pipeline--ok {
  border-color: #86efac;
  background: #ecfdf3;
  color: #166534;
}

.vb-library-pipeline--warn {
  border-color: #fdba74;
  background: #fff7ed;
  color: #9a3412;
}

.vb-library-pipeline--error {
  border-color: #fca5a5;
  background: #fef2f2;
  color: #991b1b;
}

.vb-library-chapters {
  border: 1px solid #d7dfeb;
  border-radius: 8px;
  background: #f8fafc;
  padding: 0.38rem 0.45rem;
}

.vb-library-chapters summary {
  cursor: pointer;
  font-size: 0.78rem;
  color: #1f2937;
  font-weight: 600;
}

.vb-library-chapter-list {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.32rem;
}

.vb-library-chapter-row {
  display: flex;
  gap: 0.42rem;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.76rem;
  color: #475467;
}

.vb-player-video-wrap,
.vb-player-timeline-wrap {
  display: grid;
  gap: 0.7rem;
}

.vb-player-meta {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  align-items: center;
}

.vb-player-progress {
  margin: 0;
  font-size: 0.78rem;
  border-radius: 999px;
  padding: 0.16rem 0.56rem;
  color: #374151;
  background: #eef2f7;
}

.vb-player-badge {
  margin: 0;
  font-size: 0.76rem;
  border-radius: 999px;
  padding: 0.16rem 0.52rem;
  width: fit-content;
}

.vb-player-badge--published {
  color: #155e75;
  background: #cffafe;
}

.vb-player-badge--live {
  color: #7c2d12;
  background: #ffedd5;
}

.vb-player-badge--hybrid {
  color: #1d4ed8;
  background: #dbeafe;
}

.vb-player-badge--unknown {
  color: #475467;
  background: #eaecf0;
}

.vb-player-badge--video {
  color: #1d4ed8;
  background: #dbeafe;
}

.vb-player-badge--timeline {
  color: #3f3f46;
  background: #eceff3;
}

.vb-player-events {
  border: 1px solid #dbe4f0;
  border-radius: 10px;
  background: #fcfdff;
  padding: 0.5rem 0.55rem;
  display: grid;
  gap: 0.4rem;
  max-height: 26vh;
  overflow: auto;
}

.vb-player-events h3 {
  margin: 0;
  font-size: 0.84rem;
  color: #334155;
}

.vb-player-events-list {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.24rem;
}

.vb-player-events-item {
  font-size: 0.78rem;
  color: #334155;
}

.vb-player-events-item--warn {
  color: #93420f;
}

.vb-player-events-item--error {
  color: #9f1239;
}

.vb-player-events-empty {
  font-size: 0.78rem;
  color: #64748b;
}

.vb-player-source-warning {
  margin: 0;
  font-size: 0.82rem;
  border-radius: 8px;
  padding: 0.36rem 0.5rem;
  width: fit-content;
}

.vb-player-source-warning--neutral {
  color: #475467;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

.vb-player-source-warning--ok {
  color: #166534;
  background: #dcfce7;
  border: 1px solid #bbf7d0;
}

.vb-player-source-warning--warn {
  color: #92400e;
  background: #ffedd5;
  border: 1px solid #fed7aa;
}

.vb-player-source-warning--error {
  color: #991b1b;
  background: #fee2e2;
  border: 1px solid #fecaca;
}

.vb-player-video {
  width: 100%;
  max-height: 70vh;
  border-radius: 12px;
  background: #111827;
}

.vb-player-stage {
  width: 100%;
  min-height: 320px;
  border: 1px solid #d8e0ec;
  border-radius: 12px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #ffffff;
}

.vb-player-stage img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.vb-player-image-empty {
  color: #667085;
}

.vb-player-text {
  margin: 0;
  line-height: 1.55;
  color: #0f172a;
  font-size: 1.02rem;
}

.vb-player-slide-list-wrap {
  border: 1px solid #dbe4f0;
  border-radius: 10px;
  background: #fcfdff;
  padding: 0.55rem;
  display: grid;
  gap: 0.45rem;
  max-height: 38vh;
  overflow: auto;
}

.vb-player-slide-list-wrap h3 {
  margin: 0;
  font-size: 0.9rem;
  color: #334155;
}

.vb-player-slide-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.3rem;
}

.vb-player-slide-list-empty {
  color: #64748b;
  font-size: 0.85rem;
}

.vb-player-slide-item {
  width: 100%;
  text-align: left;
  border: 1px solid #d6deea;
  border-radius: 8px;
  background: #ffffff;
  color: #1f2937;
  padding: 0.4rem 0.45rem;
  display: grid;
  gap: 0.15rem;
  cursor: pointer;
}

.vb-player-slide-item:hover {
  background: #f7fbff;
}

.vb-player-slide-item.is-active {
  border-color: #0f4ba8;
  background: #eef5ff;
}

.vb-player-slide-item__number {
  font-size: 0.74rem;
  color: #334155;
  font-weight: 700;
}

.vb-player-slide-item__text {
  font-size: 0.82rem;
  line-height: 1.3;
  color: #0f172a;
}

.vb-exp-placement-modal-open {
  overflow: hidden;
}

.vb-exp-placement-modal[hidden] {
  display: none;
}

.vb-exp-placement-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.82);
}

.vb-exp-placement-modal__surface {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  color: #0f172a;
  background: #f7f9fc;
}

.vb-exp-placement-modal__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #d5deeb;
  background: #ffffff;
}

.vb-exp-placement-modal__heading {
  display: grid;
  gap: 0.15rem;
}

.vb-exp-placement-modal__title,
.vb-exp-placement-modal__meta {
  margin: 0;
}

.vb-exp-placement-modal__title {
  font-size: 1rem;
  font-weight: 800;
  color: #172033;
}

.vb-exp-placement-modal__meta {
  font-size: 0.8rem;
  color: #475569;
}

.vb-exp-placement-modal__actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.vb-exp-placement-modal__recalc-status {
  min-height: 1rem;
  color: #64748b;
  font-size: 0.78rem;
  font-weight: 800;
}

.vb-exp-placement-modal__recalc-status.is-success {
  color: #15803d;
}

.vb-exp-placement-modal__recalc-status.is-warning {
  color: #a16207;
}

.vb-exp-placement-modal__body {
  min-height: 0;
  overflow: auto;
  padding: 1rem;
  display: grid;
  place-items: center;
}

.vb-exp-placement-stage {
  position: relative;
  display: inline-block;
  background: #ffffff;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.18);
}

.vb-exp-placement-stage__image {
  display: block;
  max-width: calc(100vw - 2rem);
  max-height: calc(100vh - 6.5rem);
  width: auto;
  height: auto;
  user-select: none;
  -webkit-user-drag: none;
}

.vb-exp-placement-stage__dots {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.vb-exp-placement-stage__preview {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
}

.vb-exp-placement-dot {
  position: absolute;
  transform: translate(-50%, -50%);
  border: 0;
  background: transparent;
  padding: 0;
  cursor: grab;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  max-width: 220px;
  color: #b42318;
  font-size: 0.74rem;
  font-weight: 800;
  z-index: 1;
  text-shadow:
    0 1px 0 #ffffff,
    1px 0 0 #ffffff,
    -1px 0 0 #ffffff,
    0 -1px 0 #ffffff;
}

.vb-exp-placement-dot:active,
.vb-exp-placement-dot.is-dragging {
  cursor: grabbing;
  opacity: 0.5;
}

.vb-exp-placement-dot__point {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #d92d20;
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 1px rgba(127, 29, 29, 0.8);
  flex: 0 0 auto;
}

.vb-exp-placement-dot__label {
  max-width: 185px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vb-exp-placement-dot.is-unassigned .vb-exp-placement-dot__point {
  background: #ffffff;
  border-color: #d92d20;
  box-shadow: 0 0 0 2px rgba(217, 45, 32, 0.45);
}

.vb-exp-placement-dot.is-manual .vb-exp-placement-dot__point {
  background: #8a1c12;
}

.vb-exp-placement-dot.is-recalculated {
  filter:
    drop-shadow(0 0 5px rgba(250, 204, 21, 0.78))
    drop-shadow(0 0 12px rgba(234, 179, 8, 0.58));
}

.vb-exp-placement-dot.is-recalculated .vb-exp-placement-dot__point {
  box-shadow:
    0 0 0 1px rgba(127, 29, 29, 0.8),
    0 0 0 5px rgba(250, 204, 21, 0.66);
}

@media (max-width: 960px) {
  .vb-form-grid--two {
    grid-template-columns: 1fr;
  }

  .videobook {
    width: min(98vw, 1000px);
  }
}