/* client/styles.css */
:root {
  color-scheme: light;
  --bg: #f3f7fc;
  --bg-soft: #f8fbff;
  --panel: #ffffff;
  --panel-alt: #f2f7fd;
  --line: #d8e3f0;
  --text: #10233f;
  --muted: #63748a;
  --brand: #102b52;
  --brand-2: #2567c4;
  --accent: #2d7ef7;
  --accent-2: #2d7ef7;
  --danger: #cb4c4c;
  --success: #247a61;
  --shadow: 0 10px 28px rgba(22, 54, 95, 0.08);
  --radius: 8px;
  --sidebar-width: 260px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family:
    Inter,
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    system-ui,
    sans-serif;
  background: var(--bg);
  color: var(--text);
}
button,
input,
select,
textarea {
  font: inherit;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
#app {
  min-height: 100vh;
}
.boot-screen,
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(
      135deg,
      rgba(45, 126, 247, 0.08),
      rgba(16, 43, 82, 0.04)),
    var(--bg);
}
.boot-card,
.login-card {
  width: min(520px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 24px;
}
.boot-title,
.login-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 8px;
}
.boot-subtitle,
.login-subtitle {
  color: var(--muted);
  font-size: 14px;
}
.login-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}
.login-hero {
  background:
    linear-gradient(
      160deg,
      #163d72,
      #0c2344);
  border-radius: 12px;
  color: #fff;
  padding: 22px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.login-hero h2 {
  margin: 0 0 12px;
  font-size: 26px;
  line-height: 1.15;
}
.login-hero p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  line-height: 1.7;
}
.login-form {
  display: grid;
  gap: 12px;
}
.field {
  display: grid;
  gap: 8px;
}
.field label {
  font-size: 13px;
  color: var(--muted);
}
.input,
.textarea,
.select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  outline: none;
}
.textarea {
  min-height: 120px;
  resize: vertical;
}
.input:focus,
.textarea:focus,
.select:focus {
  border-color: rgba(45, 126, 247, 0.6);
  box-shadow: 0 0 0 3px rgba(45, 126, 247, 0.08);
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.dashboard-only-tabs {
  display: none;
}
.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 8px;
  padding: 9px 12px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn:hover {
  border-color: rgba(45, 126, 247, 0.48);
}
.btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
.btn-ghost {
  background: transparent;
}
.btn-icon {
  width: 38px;
  padding: 0;
}
.compact-select {
  width: auto;
  min-width: 76px;
  padding: 7px 8px;
}
.course-video,
.recording-preview {
  width: 100%;
  min-height: 220px;
  background: #17251c;
  border-radius: 8px;
}
.admin-tabs {
  overflow-x: auto;
  padding-bottom: 2px;
}
.admin-tabs .btn {
  white-space: nowrap;
}
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}
.sidebar {
  background: #102b52;
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  gap: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background:
    linear-gradient(
      160deg,
      #f0d3a5,
      #b87b35);
  display: grid;
  place-items: center;
  color: #203026;
  font-weight: 800;
}
.brand-text {
  display: grid;
  gap: 4px;
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
}
.brand-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
}
.sidebar-nav {
  display: grid;
  gap: 8px;
}
.nav-item {
  width: 100%;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.88);
  border-radius: 8px;
  padding: 11px 12px;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.nav-item.active {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.nav-item span {
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
}
.main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.topbar {
  min-height: 68px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(248, 251, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.title-block {
  display: grid;
  gap: 4px;
}
.page-title {
  font-size: 18px;
  font-weight: 700;
}
.page-subtitle {
  font-size: 12px;
  color: var(--muted);
}
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.user-chip img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
}
.shell-content {
  padding: 20px;
  display: grid;
  gap: 18px;
}
.page-section {
  display: grid;
  gap: 16px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.section-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
.section-note {
  color: var(--muted);
  font-size: 13px;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.analysis-layout.analysis-board-layout {
  grid-template-columns: minmax(180px, 190px) minmax(500px, 1fr) minmax(220px, 240px);
  gap: 12px;
}
.analysis-layout.question-layout {
  grid-template-columns: minmax(180px, 190px) minmax(500px, 1fr) minmax(220px, 240px);
  gap: 12px;
}
.analysis-board-layout .board-wrap,
.question-layout .board-wrap,
.battle-layout .board-wrap {
  width: min(500px, 100%);
  max-width: 500px;
  margin: 0 auto;
  padding: 12px;
}
.analysis-board-layout .board-canvas,
.question-layout .board-canvas,
.battle-layout .board-canvas {
  max-height: 474px;
}
.analysis-layout.battle-layout {
  grid-template-columns: minmax(180px, 190px) minmax(500px, 1fr) minmax(220px, 240px);
  gap: 12px;
}
.metric-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  box-shadow: var(--shadow);
  min-height: 108px;
}
.metric-label {
  color: var(--muted);
  font-size: 12px;
}
.metric-value {
  font-size: 30px;
  font-weight: 700;
  margin-top: 10px;
}
.metric-foot {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}
.content-grid {
  display: grid;
  gap: 16px;
}
.analysis-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-width: 0;
}
.panel-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.panel-title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}
.panel-body {
  padding: 16px;
}
.stack {
  display: grid;
  gap: 12px;
}
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.mini-list {
  display: grid;
  gap: 10px;
}
.mini-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--panel-alt);
}
.mini-item strong {
  display: block;
  margin-bottom: 4px;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 6px 10px;
  background: #eef3ee;
  color: #24503b;
  font-size: 12px;
}
.chip.accent {
  background: #f6e5cd;
  color: #8a5310;
}
.chip.blue {
  background: #e5efff;
  color: #1948a8;
}
.chip.red {
  background: #fde6e6;
  color: #9f3030;
}
.chip.green {
  background: #e0f0e5;
  color: #24683f;
}
.board-shell {
  display: grid;
  gap: 12px;
}
.board-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.board-wrap {
  background: #e4efff;
  border-radius: 8px;
  border: 1px solid #bfd3ee;
  padding: 10px;
}
.board-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  background:
    linear-gradient(
      180deg,
      #e7f1ff,
      #d4e6fb);
}
.winrate-chart {
  width: 100%;
  height: 160px;
  display: block;
}
.move-list {
  max-height: 420px;
  overflow: auto;
  display: grid;
  gap: 8px;
}
.move-row {
  display: grid;
  grid-template-columns: 52px 44px minmax(0, 1fr) 72px;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.move-row.active {
  border-color: rgba(45, 126, 247, 0.6);
  box-shadow: 0 0 0 3px rgba(45, 126, 247, 0.08);
}
.move-row .muted {
  color: var(--muted);
  font-size: 12px;
}
.table {
  width: 100%;
  border-collapse: collapse;
}
.table th,
.table td {
  padding: 11px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.table th {
  color: var(--muted);
  font-weight: 600;
  background: #f5f9fe;
}
.table tr:hover td {
  background: #f2f7fd;
}
.cover {
  width: 100%;
  border-radius: 8px;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  background: #eee;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.course-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.course-card .body {
  padding: 14px;
  display: grid;
  gap: 10px;
}
.course-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
}
.course-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}
.course-desc {
  color: var(--muted);
  line-height: 1.6;
  font-size: 13px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.stacked-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.suggestion-button {
  border: 0;
  cursor: pointer;
}
.phase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.phase-grid > div {
  display: grid;
  gap: 5px;
}
.variation-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}
.variation-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.muted {
  color: var(--muted);
}
.list {
  display: grid;
  gap: 10px;
}
.list-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
  display: grid;
  gap: 6px;
}
.list-item-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.list-item-title {
  font-weight: 700;
}
.progress {
  height: 10px;
  border-radius: 999px;
  background: #eadfce;
  overflow: hidden;
}
.progress > span {
  display: block;
  height: 100%;
  background:
    linear-gradient(
      90deg,
      var(--brand-2),
      var(--accent));
}
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 19, 15, 0.48);
  display: grid;
  place-items: center;
  z-index: 50;
  padding: 20px;
}
.modal {
  width: min(840px, 100%);
  max-height: min(90vh, 900px);
  overflow: auto;
  background: var(--panel);
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 30px 70px rgba(10, 15, 11, 0.28);
}
.modal-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.modal-body {
  padding: 18px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #eef2ec;
  color: #47604d;
  font-size: 12px;
}
.tag.warn {
  background: #f8ead8;
  color: #94601c;
}
.tag.ok {
  background: #e5f0e8;
  color: #2f7248;
}
.tag.blue {
  background: #e7eefc;
  color: #1d4ea5;
}
.tag.red {
  background: #fde8e8;
  color: #a53b3b;
}
.empty-state {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #fff;
}
.footer-note {
  color: var(--muted);
  font-size: 12px;
}
.wechat-login-qr {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: #10233f;
  text-align: center;
}
.wechat-login-qr img {
  width: 180px;
  height: 180px;
  object-fit: contain;
}
.wechat-login-qr small,
.error-text {
  color: var(--muted);
}
.member-list-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.member-avatar {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  object-fit: cover;
  background: var(--panel-alt);
}
.member-list-copy {
  min-width: 0;
  flex: 1;
}
@media (max-width: 1180px) {
  .analysis-layout {
    grid-template-columns: 1fr;
  }
  .course-grid,
  .grid-3,
  .metrics-grid,
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 15;
  }
  .course-grid,
  .grid-3,
  .metrics-grid,
  .grid-2,
  .login-grid,
  .split {
    grid-template-columns: 1fr;
  }
  .move-row {
    grid-template-columns: 44px 36px minmax(0, 1fr) 64px;
  }
  .phase-grid {
    grid-template-columns: 1fr;
  }
}
.board-workspace-shell {
  --bg: #20262b;
  --panel: #30373e;
  --panel-alt: #374047;
  --line: #4b555e;
  --text: #e7ebef;
  --muted: #aeb8c1;
  --brand: #20262b;
  --brand-2: #16855e;
  --accent: #16855e;
  grid-template-columns: 210px minmax(0, 1fr);
  background: var(--bg);
}
.admin-workspace-shell {
  grid-template-columns: 236px minmax(0, 1fr);
  background: #f3f7fc;
}
.admin-workspace-shell .sidebar {
  background: #102b52;
  padding: 20px 14px;
}
.admin-workspace-shell .brand-mark {
  background:
    linear-gradient(
      160deg,
      #2d7ef7,
      #163d72);
  color: #fff;
}
.admin-workspace-shell .nav-item {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.86);
}
.admin-workspace-shell .nav-item.active {
  background: #2567c4;
  border-color: #4f91e8;
  color: #fff;
}
.admin-workspace-shell .main {
  background: #f3f7fc;
}
.admin-workspace-shell .admin-topbar {
  background: rgba(248, 251, 255, 0.94);
  border-bottom-color: #d8e3f0;
}
.admin-scope,
.admin-status {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  color: #c7d9ed;
  font-size: 12px;
}
.admin-status {
  color: #2567c4;
  border-color: #bfd3ee;
  background: #edf5ff;
}
.admin-return-link {
  color: #c7d9ed;
  font-size: 13px;
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
}
.admin-forbidden {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #f3f7fc;
  padding: 24px;
}
.admin-forbidden-card {
  width: min(460px, 100%);
  padding: 32px;
  border: 1px solid #d8e3f0;
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
}
.admin-forbidden-card h1 {
  margin: 18px 0 8px;
  color: #10233f;
}
.admin-forbidden-card p {
  color: #63748a;
  line-height: 1.7;
  margin: 0 0 20px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.settings-panel-wide,
.settings-actions {
  grid-column: 1 / -1;
}
.settings-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.settings-form-grid .list-item {
  min-height: 42px;
}
.setting-wide,
.setting-help {
  grid-column: 1 / -1;
}
.setting-help {
  color: #63748a;
  font-size: 12px;
  line-height: 1.7;
  padding: 8px 0;
}
.settings-secret {
  min-height: 120px;
  font-family: Consolas, monospace;
}
.settings-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
@media (max-width: 860px) {
  .settings-grid,
  .settings-form-grid {
    grid-template-columns: 1fr;
  }
}
.board-workspace-shell .sidebar {
  background: #1d2327;
  padding: 16px 12px;
  gap: 14px;
}
.board-workspace-shell .brand-mark {
  background: #d9ad5d;
}
.board-workspace-shell .brand-name {
  font-size: 16px;
}
.board-workspace-shell .nav-item {
  background: transparent;
  color: #aeb8c1;
  padding: 8px 10px;
  font-size: 13px;
}
.board-workspace-shell .nav-item.active {
  background: #41484e;
  border-color: #555e66;
  color: #fff;
}
.board-workspace-shell .workspace-logout {
  width: 100%;
  justify-content: flex-start;
  background: transparent;
  border-color: #4b555e;
  color: #dfe6eb;
}
.board-workspace-shell .main {
  background: #20262b;
  color: var(--text);
  min-height: 100vh;
}
.board-workspace-shell .topbar {
  display: none;
}
.board-workspace-shell .page-title {
  color: #f0f3f6;
  font-size: 16px;
}
.board-workspace-shell .page-subtitle,
.board-workspace-shell .section-note {
  color: #9faab4;
}
.board-workspace-shell .shell-content {
  padding: 10px 14px 12px;
  gap: 8px;
  overflow: auto;
}
.board-workspace-shell .page-section {
  height: calc(100vh - 20px);
  min-height: 0;
  gap: 8px;
}
.board-workspace-shell .section-head {
  min-height: 34px;
  align-items: center;
}
.board-workspace-shell .section-title {
  color: #f0f3f6;
  font-size: 18px;
}
.board-workspace-shell .panel {
  background: var(--panel);
  border-color: var(--line);
  box-shadow: none;
}
.board-workspace-shell .metric-card,
.board-workspace-shell .course-card,
.board-workspace-shell .empty-state {
  background: #30373e;
  border-color: #4d5963;
  color: #e5e9ed;
  box-shadow: none;
}
.board-workspace-shell .metric-label,
.board-workspace-shell .metric-foot,
.board-workspace-shell .course-meta,
.board-workspace-shell .course-desc {
  color: #aeb8c1;
}
.board-workspace-shell .table th {
  background: #303a42;
}
.board-workspace-shell .course-card .cover {
  border-bottom: 1px solid #4d5963;
}
.board-workspace-shell .course-card .body {
  background: #30373e;
}
.board-workspace-shell .course-grid,
.board-workspace-shell .grid-2,
.board-workspace-shell .metrics-grid {
  gap: 12px;
}
.board-workspace-shell .page-section:not(.lecture-workspace-page):not(.lecture-watch-page) > .section-head {
  display: flex;
}
.board-workspace-shell:not(.admin-workspace-shell) .topbar {
  display: flex;
  min-height: 52px;
  padding: 9px 14px;
  background: #20262b;
  border-bottom-color: #3c464e;
}
.board-workspace-shell:not(.admin-workspace-shell) .topbar .page-title {
  font-size: 16px;
}
.board-workspace-shell:not(.admin-workspace-shell) .user-chip {
  background: #30373e;
  border-color: #4d5963;
  color: #e5e9ed;
}
.lecture-library-page,
.lecture-workspace-page,
.lecture-watch-page {
  min-height: calc(100vh - 82px);
}
.lecture-library-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding: 4px 0 20px;
}
.lecture-search-wrap {
  position: relative;
  width: min(400px, 100%);
}
.lecture-search {
  height: 36px;
  padding-right: 38px;
}
.lecture-search-icon {
  position: absolute;
  top: 8px;
  right: 12px;
  color: #b9c8d4;
  font-size: 20px;
}
.board-workspace-shell .btn-outline {
  background: transparent;
  border-color: #00b8d9;
  color: #58d8f0;
}
.lecture-tabs {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  border-bottom: 1px solid #4b555e;
}
.lecture-tab {
  padding: 9px 16px;
  border: 1px solid transparent;
  border-bottom: 0;
  background: transparent;
  color: #9fc9ff;
  font-size: 13px;
}
.lecture-tab.active {
  border-color: #4b555e;
  border-radius: 5px 5px 0 0;
  background: #30373e;
  color: #fff;
}
.lecture-library-rule {
  display: none;
}
.lecture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 260px));
  gap: 26px 20px;
  padding: 20px 0 24px;
}
.lecture-card {
  position: relative;
  cursor: pointer;
  color: #e5e9ed;
}
.lecture-card-board {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border: 1px solid #a77a32;
  border-radius: 7px 7px 0 0;
  background: #dcb15e;
}
.lecture-card-board .board-canvas {
  width: 100%;
  height: 100%;
  border-radius: 0;
}
.lecture-card-caption {
  margin-top: -27px;
  position: relative;
  height: 27px;
  padding: 5px 8px;
  background: rgba(255, 255, 255, 0.75);
  color: #161b1f;
  font-size: 12px;
}
.lecture-card-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding-top: 16px;
  color: #bfc9d1;
  font-size: 12px;
}
.lecture-card-meta time {
  color: #9faab4;
}
.lecture-card-actions {
  display: flex;
  gap: 8px;
  padding-top: 12px;
}
.lecture-card-actions .btn {
  min-height: 32px;
  padding: 6px 10px;
}
.lecture-empty {
  padding: 42px 0;
  color: #9faab4;
}
.lecture-guide {
  border-top: 1px solid #4b555e;
  padding: 16px 10px 24px;
  color: #dfe6eb;
  font-size: 12px;
  line-height: 1.9;
}
.lecture-guide ol {
  margin: 0;
  padding-left: 20px;
}
.lecture-guide-cta {
  margin-top: 6px;
}
.lecture-workspace-layout,
.lecture-watch-layout {
  display: grid;
  grid-template-columns: minmax(560px, 1.08fr) minmax(500px, .92fr);
  gap: 18px;
  min-height: calc(100vh - 82px);
}
.lecture-board-panel,
.lecture-watch-board {
  min-width: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}
.lecture-board-wrap {
  width: min(100%, 820px);
  padding: 14px;
  background: #dcb15e;
  border: 1px solid #a77a32;
  border-radius: 4px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .26);
}
.lecture-board-wrap .board-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #dcb15e;
}
.lecture-control-rail,
.lecture-watch-rail {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 10px;
}
.lecture-record-panel,
.lecture-watch-summary,
.lecture-watch-tools,
.lecture-instructions,
.lecture-timeline-panel {
  padding: 12px;
  background: #30373e;
  border: 1px solid #4b555e;
  border-radius: 5px;
}
.lecture-record-head,
.lecture-panel-title,
.lecture-analysis-row,
.lecture-note-field,
.lecture-audio-line {
  display: flex;
  align-items: center;
  gap: 10px;
}
.lecture-record-head,
.lecture-panel-title {
  justify-content: space-between;
}
.lecture-record-clock {
  color: #f0f3f6;
  white-space: nowrap;
  font-size: 16px;
}
.lecture-mic-dot {
  color: #9fc9ff;
  font-size: 18px;
}
.lecture-mic-dot.active {
  color: #ff6674;
  animation: lecture-pulse 1.1s ease-in-out infinite;
}
@keyframes lecture-pulse {
  50% {
    opacity: .35;
  }
}
.lecture-control-rule {
  border-top: 1px solid #4b555e;
  margin: 10px 0;
}
.lecture-tool-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border: 1px solid #4b555e;
}
.lecture-tool {
  min-height: 48px;
  display: grid;
  place-items: center;
  gap: 2px;
  border: 0;
  border-right: 1px solid #4b555e;
  background: #30373e;
  color: #dfe6eb;
}
.lecture-tool:nth-child(6n) {
  border-right: 0;
}
.lecture-tool.active {
  background: #1679ec;
  color: #fff;
}
.lecture-tool span {
  font-size: 15px;
}
.lecture-tool small,
.lecture-watch-tools small {
  font-size: 10px;
}
.lecture-tool-row {
  display: flex;
  gap: 8px;
  margin: 12px 0;
}
.btn-tool-active {
  background: #16855e !important;
  border-color: #16855e !important;
}
.lecture-note-field span {
  color: #dfe6eb;
  white-space: nowrap;
}
.lecture-note-field .input {
  min-width: 0;
}
.lecture-replay-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
}
.lecture-replay-controls .btn {
  min-width: 34px;
  padding: 5px 6px;
}
.lecture-move-count {
  margin-left: auto;
  color: #dfe6eb;
  font-size: 12px;
  white-space: nowrap;
}
.lecture-analysis-row {
  margin-top: 12px;
  flex-wrap: wrap;
  color: #dfe6eb;
  font-size: 12px;
}
.select-like {
  padding: 7px 9px;
  border: 1px solid #56616b;
  border-radius: 4px;
  background: #252d33;
}
.lecture-instructions {
  color: #c5ced6;
  font-size: 12px;
  line-height: 1.8;
}
.lecture-instructions strong {
  color: #00c2e7;
}
.lecture-instructions p {
  margin: 5px 0 0;
}
.lecture-timeline-list,
.lecture-watch-timeline {
  display: grid;
  gap: 4px;
  max-height: 310px;
  overflow: auto;
  margin-top: 9px;
}
.lecture-timeline-row,
.lecture-watch-row {
  display: grid;
  grid-template-columns: 52px 58px minmax(0, 1fr);
  gap: 8px;
  padding: 7px 8px;
  border: 1px solid transparent;
  background: #2b333a;
  color: #dfe6eb;
  font-size: 11px;
  text-align: left;
}
.lecture-timeline-row.active,
.lecture-watch-row.active {
  border-color: #16855e;
  background: #344b47;
}
.lecture-watch-summary {
  display: grid;
  gap: 12px;
}
.lecture-watch-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #c5ced6;
  font-size: 11px;
}
.lecture-audio-line audio {
  min-width: 0;
  flex: 1;
  height: 30px;
}
.lecture-audio-empty,
.lecture-qa-empty,
.lecture-watch-hint {
  color: #aeb8c1;
  font-size: 12px;
}
.lecture-preview-player {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 9px 0;
  border-top: 1px solid #4b555e;
  border-bottom: 1px solid #4b555e;
}
.lecture-preview-player .btn {
  min-height: 32px;
  padding: 6px 9px;
}
.lecture-preview-player [data-lecture-playback-clock] {
  margin-left: auto;
  color: #dfe6eb;
  font-size: 12px;
  white-space: nowrap;
}
.lecture-watch-tools {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  padding: 0;
  overflow: hidden;
}
.lecture-watch-tools button {
  display: grid;
  gap: 5px;
  place-items: center;
  min-height: 64px;
  border: 0;
  background: #30373e;
  color: #fff;
  font-size: 18px;
}
.lecture-watch-tools button:hover {
  background: #3d474f;
}
.lecture-watch-tabs {
  display: flex;
  gap: 20px;
  border-bottom: 1px solid #4b555e;
}
.lecture-watch-tabs button {
  padding: 10px 0;
  border: 0;
  background: transparent;
  color: #dfe6eb;
}
.lecture-watch-tabs button.active {
  color: #00c2e7;
  border-bottom: 2px solid #00c2e7;
}
.lecture-watch-hint {
  padding: 8px 0;
}
.lecture-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.lecture-stats-grid > div {
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid #4b555e;
  background: #30373e;
}
.lecture-stats-grid strong {
  color: #58d8f0;
  font-size: 24px;
}
.lecture-stats-grid span,
.lecture-stats-note,
.lecture-create-warning {
  color: #aeb8c1;
  font-size: 12px;
  line-height: 1.7;
}
.lecture-modal-actions {
  justify-content: flex-end;
}
.board-workspace-shell .panel-head {
  padding: 9px 12px;
  border-bottom-color: var(--line);
}
.board-workspace-shell .panel-body {
  padding: 10px 12px;
}
.board-workspace-shell .analysis-reference-panel {
  display: grid;
  align-content: start;
  min-height: 0;
  flex: 1;
  gap: 10px;
}
.board-workspace-shell .analysis-reference-title-row,
.board-workspace-shell .analysis-reference-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.board-workspace-shell .analysis-reference-title-row strong {
  color: #f0f3f6;
  font-size: 13px;
}
.board-workspace-shell .analysis-reference-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.board-workspace-shell .analysis-reference-meta span {
  padding: 4px 7px;
  border: 1px solid #4d5963;
  border-radius: 4px;
  color: #c5ced6;
  background: #303a42;
  font-size: 11px;
}
.board-workspace-shell .analysis-reference-heading {
  padding-top: 2px;
  color: #f0f3f6;
  font-size: 12px;
}
.board-workspace-shell .analysis-suggestion-table {
  overflow: hidden;
  border: 1px solid #4d5963;
  border-radius: 4px;
}
.board-workspace-shell .analysis-suggestion-row {
  display: grid;
  grid-template-columns: 1fr 1fr .75fr .85fr .85fr;
  align-items: center;
  width: 100%;
  min-height: 30px;
  padding: 5px 7px;
  border: 0;
  border-bottom: 1px solid #46515a;
  background: transparent;
  color: #dfe6eb;
  font: inherit;
  font-size: 11px;
  text-align: left;
}
.board-workspace-shell .analysis-suggestion-row:last-child {
  border-bottom: 0;
}
.board-workspace-shell .analysis-suggestion-header {
  min-height: 26px;
  background: #303a42;
  color: #aeb8c1;
  font-size: 10px;
}
.board-workspace-shell button.analysis-suggestion-row {
  cursor: pointer;
}
.board-workspace-shell button.analysis-suggestion-row:hover,
.board-workspace-shell button.analysis-suggestion-row:focus-visible {
  background: #3a474f;
  outline: 0;
}
.board-workspace-shell .analysis-reference-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.board-workspace-shell .analysis-advanced {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.board-workspace-shell .analysis-advanced summary {
  cursor: pointer;
  color: #9fc9ff;
  font-size: 11px;
}
.board-workspace-shell .analysis-advanced-body {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}
.board-workspace-shell .analysis-bottom-toolbar {
  display: grid;
  gap: 8px;
  margin-top: 10px;
  border-top: 1px solid var(--line);
  padding-top: 9px;
}
.board-workspace-shell .analysis-bottom-actions {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr)) repeat(4, auto);
  gap: 4px;
}
.board-workspace-shell .analysis-bottom-actions .btn {
  min-width: 0;
  padding: 5px 6px;
  font-size: 11px;
}
.board-workspace-shell .analysis-replay-status {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  color: #aeb8c1;
  font-size: 11px;
}
.board-workspace-shell .analysis-replay-track {
  height: 5px;
  overflow: hidden;
  border-radius: 3px;
  background: #505b64;
}
.board-workspace-shell .analysis-replay-track span {
  display: block;
  height: 100%;
  background: #16855e;
}
.board-workspace-shell .input,
.board-workspace-shell .textarea,
.board-workspace-shell .select {
  background: #252d33;
  border-color: #56616b;
  color: #eef2f5;
  padding: 8px 10px;
}
.board-workspace-shell .btn {
  min-height: 32px;
  padding: 6px 9px;
  background: #2e363d;
  color: #e5e9ed;
  border-color: #56616b;
}
.board-workspace-shell .btn-primary {
  background: #16855e;
  border-color: #16855e;
  color: #fff;
}
.board-workspace-shell .chip,
.board-workspace-shell .tag {
  background: #3d474f;
  color: #dfe6eb;
}
.board-workspace-shell .list-item,
.board-workspace-shell .move-row {
  background: #2e363d;
  border-color: #56616b;
  color: #e5e9ed;
}
.board-workspace-shell .list-item .muted,
.board-workspace-shell .move-row .muted {
  color: #aeb8c1;
}
.board-workspace-shell .list-item.active,
.board-workspace-shell .move-row.active {
  border-color: #16855e;
  box-shadow: 0 0 0 2px rgba(22, 133, 94, 0.2);
}
.board-workspace-shell .table th,
.board-workspace-shell .table td {
  background: transparent;
  border-bottom-color: #4b555e;
  color: #e5e9ed;
}
.board-workspace-shell .table th {
  color: #aeb8c1;
}
.board-workspace-shell .table tr:hover td {
  background: #3a444c;
}
.board-workspace-shell .board-shell {
  min-height: 0;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) .board-toolbar {
  display: none;
}
.board-workspace-shell .board-wrap {
  width: min(90vh, 100%);
  max-width: none;
  margin: 0 auto;
  padding: 16px;
  background: #dcb15e;
  border-color: #a77a32;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}
.board-workspace-shell .board-canvas {
  max-height: none;
  background: #dcb15e;
}
.board-workspace-shell .analysis-layout.analysis-board-layout,
.board-workspace-shell .analysis-layout.battle-layout,
.board-workspace-shell .analysis-layout.question-layout {
  min-height: 0;
  height: 100%;
  gap: 12px;
}
.board-workspace-shell .page-section > .section-head {
  display: none;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) > .panel-head,
.board-workspace-shell .battle-layout > .panel:nth-child(2) > .panel-head,
.board-workspace-shell .question-layout > .panel:nth-child(2) > .panel-head {
  display: none;
}
.board-workspace-shell .analysis-layout.analysis-board-layout {
  grid-template-columns: minmax(0, 1fr) minmax(360px, 38%);
  position: relative;
  grid-template-rows: minmax(0, 1fr);
}
.board-workspace-shell .analysis-board-layout > .panel:first-child {
  grid-column: 2;
  grid-row: 1;
  align-self: stretch;
  display: flex;
  min-height: 0;
  flex-direction: column;
}
.board-workspace-shell .analysis-board-layout > .panel:first-child > .panel-body {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  overflow: auto;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) {
  grid-column: 1;
  grid-row: 1;
  min-height: 0;
  align-self: stretch;
  overflow: hidden;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) > .panel-body {
  height: 100%;
  min-height: 0;
  overflow: hidden;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) .board-shell {
  display: flex;
  height: 100%;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) .board-wrap {
  width: min(90vh, 100%);
  flex: 0 0 auto;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) > .panel-body > .stack,
.board-workspace-shell .analysis-board-layout > .panel:nth-child(2) > .panel-body > .panel {
  display: none;
}
.board-workspace-shell .analysis-board-layout > .panel:nth-child(3) {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: min(38%, 660px);
  min-width: 360px;
  min-height: 0;
  max-height: 680px;
  overflow: auto;
}
.board-workspace-shell .analysis-layout.battle-layout {
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
}
.board-workspace-shell .battle-layout > .panel:first-child {
  grid-column: 2;
  grid-row: 1;
}
.board-workspace-shell .battle-layout > .panel:nth-child(2) {
  grid-column: 1;
  grid-row: 1 / span 2;
}
.board-workspace-shell .battle-layout > .panel:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
  min-height: 0;
  overflow: auto;
}
.board-workspace-shell .analysis-layout.question-layout {
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
}
.board-workspace-shell .question-layout > .panel:first-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-height: 0;
  overflow: auto;
}
.board-workspace-shell .question-layout > .panel:nth-child(2) {
  grid-column: 1;
  grid-row: 1 / span 2;
}
.board-workspace-shell .question-layout > .panel:nth-child(3) {
  grid-column: 2;
  grid-row: 1;
  min-height: 0;
}
.board-workspace-shell .question-layout .board-wrap,
.board-workspace-shell .analysis-board-layout .board-wrap,
.board-workspace-shell .battle-layout .board-wrap {
  width: min(90vh, 100%);
  max-width: none;
}
@media (max-width: 1180px) {
  .board-workspace-shell .analysis-layout.analysis-board-layout,
  .board-workspace-shell .analysis-layout.battle-layout,
  .board-workspace-shell .analysis-layout.question-layout {
    grid-template-columns: minmax(0, 1fr) minmax(270px, 34%);
  }
}
@media (max-width: 860px) {
  .board-workspace-shell {
    grid-template-columns: 1fr;
  }
  .board-workspace-shell .sidebar {
    padding: 8px;
  }
  .board-workspace-shell .shell-content {
    overflow: visible;
  }
  .board-workspace-shell .page-section {
    height: auto;
  }
  .board-workspace-shell .analysis-layout.analysis-board-layout,
  .board-workspace-shell .analysis-layout.battle-layout,
  .board-workspace-shell .analysis-layout.question-layout {
    height: auto;
    grid-template-columns: 1fr;
  }
  .board-workspace-shell .analysis-board-layout > .panel,
  .board-workspace-shell .battle-layout > .panel,
  .board-workspace-shell .question-layout > .panel {
    grid-column: 1 !important;
    grid-row: auto !important;
  }
  .board-workspace-shell .board-wrap {
    width: min(92vw, 620px);
  }
}
.board-workspace-shell:not(.admin-workspace-shell) .topbar,
.board-workspace-shell:not(.admin-workspace-shell) .page-section > .section-head {
  display: none;
}