:root {
  color-scheme: dark;
  --bg: #0d0f12;
  --panel: #15191e;
  --panel-2: #1c2229;
  --line: #2b333c;
  --text: #edf1f5;
  --muted: #9aa7b5;
  --accent: #e3b341;
  --accent-2: #f0c85b;
  --danger: #ff6b6b;
  --shadow: 0 18px 50px rgba(0,0,0,.28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); min-height: 100vh; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.topbar {
  height: 66px; position: sticky; top: 0; z-index: 20; display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(260px, 640px) minmax(220px, 1fr);
  align-items: center; gap: 18px; padding: 0 20px; background: rgba(13,15,18,.94);
  border-bottom: 1px solid var(--line); backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .2px; }
.brand-mark { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; background: var(--accent); color: #17120a; font-size: 28px; box-shadow: var(--shadow); }
.brand-mark.small { width: 34px; height: 34px; border-radius: 10px; font-size: 20px; box-shadow: none; }
.brand-logo-image { display: block; object-fit: cover; padding: 0; }
.search-wrap input, .login-card input {
  width: 100%; background: #101419; color: var(--text); border: 1px solid var(--line); border-radius: 11px;
  padding: 11px 13px; outline: none;
}
.search-wrap input:focus, .login-card input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(227,179,65,.12); }
.top-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
button { border: 0; border-radius: 9px; padding: 9px 12px; color: var(--text); background: var(--panel-2); }
button:hover { filter: brightness(1.1); }
button.primary { background: var(--accent); color: #17120a; font-weight: 800; }
button.primary:hover { background: var(--accent-2); }
button.ghost { background: transparent; border: 1px solid var(--line); }
.youtube-sleep-toggle { white-space: nowrap; }
.youtube-sleep-toggle.active {
  border-color: rgba(227,179,65,.68);
  background: rgba(227,179,65,.16);
  color: var(--accent-2);
  font-weight: 800;
}
button.danger { background: rgba(255,107,107,.12); color: #ffd2d2; border: 1px solid rgba(255,107,107,.55); font-weight: 750; }
button.danger:hover { background: rgba(255,107,107,.22); }
button.compact { padding: 6px 9px; font-size: 13px; }
button.wide { width: 100%; margin-top: 14px; padding: 11px; }

.global-new-notification {
  display: inline-flex; align-items: center; overflow: hidden; border: 1px solid rgba(227,179,65,.62);
  border-radius: 999px; background: rgba(227,179,65,.15); box-shadow: 0 0 0 1px rgba(227,179,65,.04) inset;
  white-space: nowrap;
}
.global-new-notification.hidden { display: none; }
.global-new-count { padding: 5px 8px 5px 10px; color: var(--accent-2); font-size: 12px; font-weight: 900; letter-spacing: .03em; }
.global-new-dismiss {
  align-self: stretch; border: 0; border-left: 1px solid rgba(227,179,65,.35); border-radius: 0;
  padding: 4px 8px; background: transparent; color: var(--muted); font-size: 11px; font-weight: 750;
}
.global-new-dismiss:hover { background: rgba(227,179,65,.12); color: var(--text); }
.clear-new-action { color: var(--accent-2); border-color: rgba(227,179,65,.42) !important; }
.app-grid { display: grid; grid-template-columns: 430px minmax(0, 1fr) 330px; min-height: calc(100vh - 66px); }
.sidebar, .queue-pane { background: var(--panel); padding: 18px 14px 150px; }
.sidebar { border-right: 1px solid var(--line); }
.queue-pane { border-left: 1px solid var(--line); }
.pane-title { font-weight: 800; text-transform: uppercase; letter-spacing: .08em; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.playlist-search-wrap { margin: -2px 0 12px; }
.playlist-search-wrap input {
  width: 100%; background: #101419; color: var(--text); border: 1px solid var(--line); border-radius: 9px;
  padding: 8px 10px; outline: none; font-size: 13px;
}
.playlist-search-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(227,179,65,.12); }
.playlist-search-empty { padding: 10px 8px; color: var(--muted); font-size: 13px; }
.playlist-toggle.search-active { cursor: default; }
.channel-block { margin-bottom: 14px; }
.channel-row { display: grid; grid-template-columns: minmax(0, 1fr) repeat(4, auto); align-items: center; gap: 4px; }
.channel-row .nav-channel { min-width: 0; overflow: hidden; }
.channel-with-avatar { display: flex !important; align-items: center; gap: 8px; }
.channel-avatar {
  position: relative; flex: 0 0 28px; width: 28px; height: 28px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.16); border-radius: 50%; background: #171c22;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.32);
}
.channel-avatar-fallback {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--accent); font-size: 12px; font-weight: 850; line-height: 1;
}
.channel-avatar-image {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity .14s ease;
}
.channel-avatar.loaded .channel-avatar-image { opacity: 1; }
.channel-name-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.channel-action {
  width: 30px; height: 30px; padding: 0 !important; color: var(--muted);
  display: inline-flex; align-items: center; justify-content: center;
}
.channel-action svg, .playlist-action svg { width: 16px; height: 16px; fill: currentColor; pointer-events: none; }
.destructive-action { color: #d98b8b; }
.destructive-action:hover { color: #ffd2d2; background: rgba(255,107,107,.14) !important; }
.destructive-action:disabled { color: var(--muted); opacity: .38; }
.nav-channel, .nav-playlist, .playlist-toggle {
  display: block; width: 100%; text-align: left; background: transparent; border: 0; color: var(--text); border-radius: 8px;
}
.nav-channel { padding: 9px 8px; font-weight: 750; }
.playlist-toggle {
  display: grid; grid-template-columns: 16px minmax(0, 1fr) auto; align-items: center; gap: 5px;
  padding: 6px 8px 6px 14px; color: var(--muted); font-size: 13px; font-weight: 700;
}
.playlist-chevron { width: 14px; text-align: center; color: var(--accent); }
.playlist-count {
  min-width: 24px; padding: 1px 6px; border: 1px solid var(--line); border-radius: 999px;
  text-align: center; color: var(--muted); font-size: 11px;
}
.playlist-list { margin-top: 2px; }
.playlist-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto auto; align-items: center; gap: 4px; }
.playlist-row .nav-playlist { min-width: 0; }
.playlist-action {
  width: 28px; height: 28px; padding: 0 !important;
  display: inline-flex; align-items: center; justify-content: center;
}
.playlist-focus-action { color: var(--muted); }
.playlist-focus-action:hover, .playlist-focus-action.active { color: var(--accent); background: rgba(227,179,65,.10) !important; }
.focused-group-toggle { color: var(--accent); }
.playlist-list-focused { margin-bottom: 5px; }
.deleted-group-toggle { color: var(--muted); margin-top: 6px; }
.playlist-list-deleted { margin-top: 2px; }
.deleted-playlist-row { grid-template-columns: minmax(0, 1fr); }
.deleted-playlist { grid-column: 1 / -1; color: var(--muted); opacity: .68; }
.deleted-playlist .playlist-name { text-decoration: line-through; text-decoration-thickness: 1px; }
.deleted-playlist:hover { opacity: 1; color: var(--muted); }
.deleted-playlist .playlist-video-count { color: var(--muted); border-color: var(--line); }
.playlist-play-action { color: var(--accent); }
.playlist-play-action:hover { color: var(--text); background: rgba(227,179,65,.12) !important; }
.playlist-play-action:disabled { color: var(--muted); opacity: .38; }
.nav-playlist {
  display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 6px;
  padding: 7px 8px 7px 30px; color: var(--muted); font-size: 14px;
}
.playlist-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.playlist-video-count {
  min-width: 26px; padding: 1px 6px; border: 1px solid var(--line); border-radius: 999px;
  text-align: center; color: var(--muted); font-size: 11px; line-height: 1.35;
}
.nav-playlist.active .playlist-video-count { color: var(--text); }

.playlist-new-count {
  padding: 2px 6px; border-radius: 999px; background: var(--accent); color: #16120a;
  font-size: 10px; font-weight: 900; line-height: 1.25; white-space: nowrap; letter-spacing: .02em;
}
.new-only-toggle.active {
  background: rgba(227,179,65,.18); color: var(--accent); border-color: rgba(227,179,65,.55);
}
.new-video-status {
  display: inline-block; padding: 1px 6px; border-radius: 999px; background: var(--accent); color: #16120a;
  font-size: 10px; font-weight: 900; letter-spacing: .03em;
}
.nav-channel:hover, .nav-playlist:hover, .playlist-toggle:hover,
.nav-channel.active, .nav-playlist.active { background: var(--panel-2); color: var(--text); }
.content { padding: 24px 26px 180px; min-width: 0; }
.content-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 15px; margin-bottom: 20px; }
.view-actions { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.filter-control, .sort-control { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 13px; }
.filter-control input, .sort-control select {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 9px;
  padding: 6px 9px; outline: none;
}
.filter-control input { width: min(230px, 30vw); }
.sort-control select { padding-right: 30px; cursor: pointer; }
.filter-control input:focus, .sort-control select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(227,179,65,.12); }
.content h1 { margin: 0 0 4px; font-size: 28px; }
.muted { color: var(--muted); }
.small-text { font-size: 13px; }
.count-pill { background: var(--panel-2); border: 1px solid var(--line); padding: 6px 10px; border-radius: 999px; color: var(--muted); font-size: 13px; white-space: nowrap; }
.video-list { display: grid; gap: 10px; }
.video-row {
  display: grid; grid-template-columns: 150px minmax(0, 1fr) auto; gap: 16px; align-items: center;
  padding: 10px; background: var(--panel); border: 1px solid transparent; border-radius: 12px;
}
.video-row:hover { border-color: var(--line); background: var(--panel-2); }
.thumb-wrap { position: relative; aspect-ratio: 16 / 9; background: #050607; border-radius: 8px; overflow: hidden; }
.thumb-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumbnail-hover-preview {
  position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%;
  object-fit: contain; background: #050607; pointer-events: none; opacity: 0;
  transition: opacity .08s linear;
}
.thumb-wrap.thumbnail-preview-active .thumbnail-hover-preview { opacity: 1; }
.thumb-wrap .position-badge,
.thumb-wrap .duration-badge,
.thumb-wrap .progress-line { z-index: 2; }
.playable-thumbnail { cursor: pointer; }
.playable-thumbnail:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.position-badge { position: absolute; left: 6px; top: 6px; background: rgba(0,0,0,.72); padding: 3px 6px; border-radius: 6px; font-size: 11px; }
.duration-badge { position: absolute; right: 6px; bottom: 6px; background: rgba(0,0,0,.82); color: #fff; padding: 3px 6px; border-radius: 5px; font: 700 11px/1.1 Consolas, "Cascadia Mono", monospace; letter-spacing: .02em; }
.progress-line { position: absolute; bottom: 0; left: 0; height: 3px; background: var(--accent); }
.video-title { font-weight: 750; line-height: 1.25; margin-bottom: 7px; }
.video-meta { display: flex; gap: 9px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.watched { color: #7ddc9c; }
.video-actions { display: flex; gap: 7px; flex-wrap: wrap; justify-content: flex-end; }
.queue-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.queue-playlist-context { margin-top: 4px; max-width: 280px; color: var(--text); font-size: 12px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.queue-header-actions { display: flex; gap: 5px; flex-wrap: wrap; justify-content: flex-end; }
.queue-list { display: grid; gap: 8px; }
.queue-item { display: grid; grid-template-columns: 42px minmax(0,1fr) auto; gap: 9px; align-items: center; padding: 8px; background: var(--panel-2); border-radius: 10px; }
.queue-item img { width: 42px; aspect-ratio: 16/9; object-fit: cover; border-radius: 5px; background: #050607; }
.queue-info { min-width: 0; display: grid; gap: 3px; }
.queue-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; font-weight: 700; cursor: pointer; }
.queue-duration { color: var(--muted); font: 700 11px/1.1 Consolas, "Cascadia Mono", monospace; letter-spacing: .02em; }
.queue-buttons { display: grid; grid-template-columns: repeat(2, 25px); gap: 3px; }
.queue-buttons button { padding: 2px; height: 25px; font-size: 12px; }
.main-workspace {
  min-height: calc(100vh - 66px);
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  overflow: hidden;
}
.player-dock {
  position: static; z-index: 30; width: 100%; height: 100%; min-height: 0; display: grid;
  grid-template-columns: minmax(0, var(--player-info-width, 260px)) minmax(0, 1fr) 40px; gap: 18px; align-items: stretch;
  padding: 12px 18px; background: rgba(18,22,27,.99); border-top: 1px solid var(--line); box-shadow: 0 -10px 35px rgba(0,0,0,.35);
}
body.player-open { height: 100vh; overflow: hidden; }
body.player-open .main-workspace {
  height: calc(100vh - 66px);
  min-height: 0;
  grid-template-rows: minmax(0, 1fr) 10px var(--player-dock-height, 50%);
}
.player-dock-resizer {
  display: none;
  position: relative;
  z-index: 35;
  width: 100%;
  height: 10px;
  cursor: row-resize;
  touch-action: none;
  background: #151a20;
  border-top: 1px solid #303943;
  border-bottom: 1px solid #050607;
  outline: none;
}
body.player-open .player-dock-resizer { display: block; }
.player-dock-resizer::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 76px;
  height: 3px;
  border-radius: 999px;
  background: #65717d;
  transform: translate(-50%, -50%);
  transition: width .12s ease, background .12s ease;
}
.player-dock-resizer:hover::before,
.player-dock-resizer:focus-visible::before,
.player-dock-resizer.dragging::before { width: 110px; background: #9aa7b4; }
body.player-dock-resizing { cursor: row-resize !important; user-select: none !important; }
body.player-dock-resizing * { cursor: row-resize !important; }
body.player-open .app-grid { min-height: 0; height: 100%; }
body.player-open .sidebar,
body.player-open .content,
body.player-open .queue-pane { min-height: 0; overflow-y: auto; padding-bottom: 18px; }
.player-info { display: grid; align-content: center; justify-items: start; gap: clamp(6px, 1.4vh, 14px); min-width: 0; overflow: hidden; }
.player-info img {
  width: min(100%, var(--player-thumb-width, 260px));
  max-height: min(44%, 210px);
  aspect-ratio: 16/9; object-fit: cover; border-radius: 9px; background: #050607;
}
.player-info > div { min-width: 0; width: 100%; }
.player-info .small-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-title { font-weight: 800; line-height: 1.25; font-size: 17px; }

.player-app-toolbar {
  width: 100%; display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-top: 2px;
}
.player-app-button {
  min-width: 38px; height: 36px; padding: 6px 10px; border: 1px solid #3b4652; border-radius: 7px;
  background: #20262d; color: #fff; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: 700 12px/1 Arial, sans-serif; cursor: pointer; box-shadow: none;
}
.player-app-button:hover:not(:disabled), .player-app-button:focus-visible { background: #2a333d; border-color: #65717d; }
.player-app-button:disabled { opacity: .38; cursor: default; }
.player-app-button .yt-icon { width: 19px; height: 19px; }
.player-app-button[aria-pressed="true"] { background: #37485a; border-color: #7d93a8; }
.player-stage {
  --yt-red: #f03;
  --yt-control-height: 48px;
  position: relative; width: 100%; height: 100%; min-width: 0; min-height: 0;
  overflow: hidden; background: #000; color: #fff; outline: none; touch-action: manipulation;
}
.player-stage .youtube-player-mount {
  display: block; width: 100%; height: 100%; min-width: 0; min-height: 0; max-height: none;
  background: #000;
}
.player-title-overlay {
  position: absolute; z-index: 12; top: 14px; left: 18px; max-width: calc(100% - 36px);
  padding: 0; color: #fff; background: transparent;
  font-size: 17px; font-weight: 700; line-height: 1.25; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  text-shadow: 0 1px 4px rgba(0,0,0,.95), 0 0 10px rgba(0,0,0,.8); pointer-events: none;
  opacity: 0; transform: translateY(-4px); transition: opacity .16s ease, transform .16s ease;
}
.player-title-overlay.visible { opacity: 1; transform: translateY(0); }

.yt-center-play {
  position: absolute; z-index: 11; left: 50%; top: 50%; transform: translate(-50%, -50%) scale(.94);
  width: 68px; height: 48px; padding: 0; border: 0; background: transparent; opacity: 0; pointer-events: none;
  transition: opacity .12s ease, transform .12s ease; filter: drop-shadow(0 2px 5px rgba(0,0,0,.55));
}
.yt-center-play svg { display: block; width: 68px; height: 48px; }
.yt-center-play-bg { fill: rgba(33,33,33,.9); transition: fill .12s ease; }
.yt-center-play-triangle { fill: #fff; }
.yt-player.is-paused .yt-center-play { opacity: 1; pointer-events: auto; transform: translate(-50%, -50%) scale(1); }
.yt-center-play:hover .yt-center-play-bg { fill: var(--yt-red); }

.yt-controls {
  position: absolute; z-index: 20; left: 0; right: 0; bottom: 0;
  padding: 0 12px 7px; color: #fff;
  background: linear-gradient(to top, rgba(0,0,0,.82) 0, rgba(0,0,0,.5) 42%, rgba(0,0,0,0) 100%);
  opacity: 1; visibility: visible; transition: opacity .18s ease, visibility .18s ease;
}
.yt-player.controls-hidden .yt-controls { opacity: 0; visibility: hidden; pointer-events: none; }
.yt-player.controls-hidden .player-title-overlay { opacity: 0; }
.yt-player.controls-hidden { cursor: none; }
.yt-player.is-paused { cursor: default; }
.yt-player.is-paused .yt-controls { opacity: 1; visibility: visible; pointer-events: auto; }

/* Native YouTube controls own playback UI, including CC/settings. ChessVideoQueue tools live outside the iframe in .player-app-toolbar. */
.yt-player.native-youtube-controls .yt-controls,
.yt-player.native-youtube-controls .yt-center-play,
.yt-player.native-youtube-controls .yt-settings-menu { display: none !important; }
.yt-player.native-youtube-controls.controls-hidden { cursor: default; }

.yt-seek-area { position: relative; height: 16px; margin: 0 0 1px; cursor: pointer; }
.yt-seek-track {
  position: absolute; left: 0; right: 0; top: 7px; height: 3px; background: rgba(255,255,255,.25);
  transform-origin: center; transition: height .08s ease, top .08s ease;
}
.yt-seek-area:hover .yt-seek-track, .yt-seek-area:focus-within .yt-seek-track { top: 6px; height: 5px; }
.yt-buffered-bar, .yt-played-bar { position: absolute; left: 0; top: 0; bottom: 0; width: 0; pointer-events: none; }
.yt-buffered-bar { background: rgba(255,255,255,.45); }
.yt-played-bar { background: var(--yt-red); }
.yt-seek-thumb {
  position: absolute; z-index: 3; top: 50%; left: 0; width: 13px; height: 13px; border-radius: 50%;
  background: var(--yt-red); transform: translate(-50%, -50%) scale(0); transition: transform .08s ease; pointer-events: none;
}
.yt-seek-area:hover .yt-seek-thumb, .yt-seek-area:focus-within .yt-seek-thumb, .yt-player.is-seeking .yt-seek-thumb { transform: translate(-50%, -50%) scale(1); }
.yt-seek-input {
  position: absolute; z-index: 4; inset: 0; width: 100%; height: 16px; margin: 0; padding: 0;
  opacity: 0; cursor: pointer; appearance: none; -webkit-appearance: none;
}
.yt-seek-tooltip {
  position: absolute; z-index: 30; bottom: 22px; left: 0; transform: translateX(-50%);
  padding: 4px 6px; border-radius: 2px; background: rgba(28,28,28,.94); color: #fff;
  font: 500 12px/1.2 Arial, sans-serif; pointer-events: none; white-space: nowrap;
}

.yt-control-row { height: 39px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.yt-control-left, .yt-control-right { display: flex; align-items: center; height: 100%; min-width: 0; }
.yt-control-button {
  width: 40px; height: 36px; padding: 6px 8px; border: 0; border-radius: 0; background: transparent; color: #fff;
  display: grid; place-items: center; cursor: pointer; opacity: .92; box-shadow: none;
}
.yt-control-button:hover:not(:disabled), .yt-control-button:focus-visible { opacity: 1; background: transparent; }
.yt-control-button:disabled { opacity: .35; cursor: default; }
.yt-icon { width: 24px; height: 24px; fill: currentColor; display: block; }
.yt-pause-icon, .yt-volume-muted-icon, .yt-exit-fullscreen-icon { display: none; }
.yt-player.is-playing .yt-play-icon { display: none; }
.yt-player.is-playing .yt-pause-icon { display: block; }
.yt-player.is-muted .yt-volume-high-icon { display: none; }
.yt-player.is-muted .yt-volume-muted-icon { display: block; }
.yt-player.is-fullscreen .yt-enter-fullscreen-icon { display: none; }
.yt-player.is-fullscreen .yt-exit-fullscreen-icon { display: block; }

.yt-volume-group { display: flex; align-items: center; width: 46px; overflow: hidden; transition: width .18s ease; }
.yt-volume-group:hover, .yt-volume-group:focus-within { width: 112px; }
.yt-volume-slider {
  width: 62px; min-width: 62px; height: 4px; margin: 0 8px 0 1px; padding: 0;
  accent-color: #fff; cursor: pointer;
}
.yt-time-text {
  min-width: 0; margin-left: 4px; color: #fff; font: 500 12px/1 Arial, sans-serif; white-space: nowrap;
  text-shadow: 0 1px 2px rgba(0,0,0,.8); user-select: none;
}

.yt-settings-menu {
  position: absolute; z-index: 40; right: 52px; bottom: 58px; width: 180px; padding: 8px 0;
  border-radius: 8px; background: rgba(28,28,28,.96); color: #fff; box-shadow: 0 8px 28px rgba(0,0,0,.45);
  backdrop-filter: blur(8px); font-family: Arial, sans-serif;
}
.yt-settings-title { padding: 8px 14px 7px; font-size: 13px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.13); }
.yt-speed-options { display: grid; padding-top: 5px; }
.yt-speed-options button {
  width: 100%; min-height: 32px; padding: 6px 14px; border: 0; border-radius: 0; background: transparent; color: #fff;
  text-align: left; font-size: 13px; cursor: pointer;
}
.yt-speed-options button:hover, .yt-speed-options button[aria-checked="true"] { background: rgba(255,255,255,.13); }
.yt-speed-options button[aria-checked="true"]::before { content: '✓'; display: inline-block; width: 20px; }
.yt-speed-options button:not([aria-checked="true"])::before { content: ''; display: inline-block; width: 20px; }

.player-stage:fullscreen, .player-stage:-webkit-full-screen { width: 100vw; height: 100vh; background: #000; }
.player-stage:fullscreen .youtube-player-mount, .player-stage:-webkit-full-screen .youtube-player-mount { width: 100%; height: 100%; }
.player-stage:fullscreen .player-title-overlay, .player-stage:-webkit-full-screen .player-title-overlay {
  top: 18px; left: 22px; max-width: calc(100% - 44px); font-size: clamp(9px, 1vw, 13px);
}
.player-stage:fullscreen .yt-controls, .player-stage:-webkit-full-screen .yt-controls { padding-left: 18px; padding-right: 18px; padding-bottom: 10px; }
.player-stage:fullscreen .yt-settings-menu, .player-stage:-webkit-full-screen .yt-settings-menu { right: 58px; bottom: 64px; }
.close-player { align-self: start; font-size: 22px; }
.maintenance-window {
  position: fixed; z-index: 90; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(940px, calc(100vw - 36px)); height: min(600px, 62vh);
  display: flex; flex-direction: column; overflow: hidden;
  background: #080a0c; border: 1px solid #3a4652; border-radius: 12px; box-shadow: 0 24px 80px rgba(0,0,0,.62);
}
.maintenance-titlebar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 10px 13px; background: #151a20; border-bottom: 1px solid var(--line);
}
.maintenance-title { font-weight: 800; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.maintenance-controls { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.maintenance-status { color: var(--accent); font-size: 13px; font-weight: 750; white-space: nowrap; }
.maintenance-output {
  flex: 1; min-height: 0; margin: 0; padding: 13px 15px; overflow: auto;
  color: #d9e2eb; background: #050607; font: 13px/1.45 Consolas, "Cascadia Mono", "Courier New", monospace;
  white-space: pre-wrap; overflow-wrap: anywhere;
}
.toast { position: fixed; right: 18px; bottom: calc(50vh + 18px); z-index: 100; background: #222a32; border: 1px solid var(--line); border-radius: 10px; padding: 10px 13px; box-shadow: var(--shadow); }
.empty { padding: 60px 20px; text-align: center; color: var(--muted); }
.hidden { display: none !important; }
.error { color: var(--danger); min-height: 22px; }
.login-page { display: grid; min-height: 100vh; place-items: center; padding: 24px; background: radial-gradient(circle at 50% 20%, #252013, var(--bg) 45%); }
.login-card { width: min(420px, 100%); background: var(--panel); padding: 32px; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.login-card .brand-mark { margin-bottom: 20px; }
.login-card h1 { margin: 0 0 8px; }
.login-card p { color: var(--muted); }
.login-card label { display: block; margin: 22px 0 7px; font-weight: 700; }
@media (max-width: 1100px) {
  /* Keep all three panes reachable on tablets / landscape phones.
     The third pane is no longer translated off-screen. */
  .app-grid {
    grid-template-columns: minmax(260px, 350px) minmax(0,1fr);
    align-items: start;
  }
  .queue-pane {
    position: static;
    grid-column: 1 / -1;
    right: auto; top: auto; bottom: auto;
    width: auto;
    transform: none;
    z-index: auto;
    max-height: min(42vh, 420px);
    overflow-x: hidden;
    overflow-y: auto;
    padding-bottom: 18px;
    border-left: 0;
    border-top: 1px solid var(--line);
    overscroll-behavior-y: contain;
  }
  body.player-open .queue-pane { bottom: auto; }
  .topbar { grid-template-columns: auto 1fr auto; }
  .player-dock { grid-template-columns: minmax(0, var(--player-info-width, 220px)) minmax(0, 1fr) 40px; }
}
@media (max-width: 760px) {
  .topbar { height: auto; grid-template-columns: 1fr auto; padding: 10px; }
  .brand span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .top-actions { flex-wrap: wrap; justify-content: flex-end; }
  .search-wrap { grid-column: 1 / -1; grid-row: 2; }

  /* Phone layout: Library, Videos, and Up Next are stacked and each pane
     gets its own bounded vertical scroll area. */
  .app-grid {
    grid-template-columns: 1fr;
    min-height: 0;
    overflow: visible;
  }
  body.player-open .app-grid {
    height: auto;
    min-height: 0;
    padding-bottom: 50vh;
  }
  .sidebar {
    display: block;
    max-height: 38vh;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    padding: 14px 12px 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .content {
    max-height: 62vh;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    padding: 16px 12px 18px;
  }
  .queue-pane {
    grid-column: auto;
    max-height: 38vh;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    padding: 14px 12px 18px;
    border-top: 1px solid var(--line);
  }
  .content-heading { align-items: flex-start; flex-direction: column; }
  .view-actions { width: 100%; justify-content: flex-start; }
  .filter-control { flex: 1 1 100%; }
  .filter-control input { width: 100%; min-width: 0; }
  .video-row { grid-template-columns: 110px minmax(0,1fr); }
  .video-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .player-dock-resizer { height: 14px; }
  body.player-open .main-workspace { grid-template-rows: minmax(0, 1fr) 14px var(--player-dock-height, 50%); }
  .player-dock { height: 100%; grid-template-columns: minmax(0,1fr) 35px; grid-template-rows: auto minmax(0,1fr); gap: 8px 12px; padding: 10px 12px; }
  .player-info { grid-column: 1; grid-row: 1; display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 8px; }
  .player-info img, .player-meta { display: none; }
  .player-info > div:not(.player-app-toolbar) { min-width: 0; }
  .player-title { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .player-app-toolbar { width: auto; flex-wrap: nowrap; margin-top: 0; gap: 4px; }
  .player-app-button { min-width: 34px; height: 32px; padding: 5px 7px; }
  .player-app-button span { display: none; }
  .player-stage { grid-column: 1 / -1; grid-row: 2; height: 100%; max-height: none; }
  .player-title-overlay { top: 10px; left: 12px; max-width: calc(100% - 24px); font-size: 14px; }
  .close-player { grid-column: 2; grid-row: 1; }
}

/* Docked lower-half player layout. The player participates in page layout
   instead of covering the lower half of the Library/Videos/Queue panes. */
@media (min-width: 1101px) {
  .main-workspace { height: calc(100vh - 66px); min-height: 0; }
  .main-workspace > .app-grid { height: 100%; min-height: 0; }
  body.player-open .main-workspace > .app-grid { height: 100% !important; }
  body.player-open .player-dock { height: 100%; min-height: 0; }
}

@media (max-width: 1100px) {
  .main-workspace {
    flex: 1 1 auto;
    width: 100%;
    height: auto;
    min-height: 0;
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    overflow: hidden;
  }
  .main-workspace > .app-grid { height: 100% !important; min-height: 0 !important; }
  body.player-open .main-workspace {
    flex: 1 1 auto;
    height: auto;
    min-height: 0;
    grid-template-rows: minmax(0, 1fr) 10px var(--player-dock-height, 50%);
  }
  body.player-open .main-workspace > .app-grid { height: 100% !important; min-height: 0 !important; }
  body.player-open .player-dock { height: 100%; min-height: 0; }
}

.channel-dialog {
  width: min(540px, calc(100vw - 32px)); padding: 0; color: var(--text);
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 80px rgba(0,0,0,.6);
}
.channel-dialog::backdrop { background: rgba(0,0,0,.68); }
.channel-dialog-form { display: grid; gap: 12px; padding: 22px; }
.channel-dialog-title { font-size: 21px; font-weight: 850; }
.channel-dialog-form p { margin: 0 0 4px; line-height: 1.45; }
.channel-dialog-form code { color: var(--accent); }
.channel-dialog-form label { font-size: 13px; font-weight: 750; color: var(--muted); }
.channel-dialog-form input {
  width: 100%; background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 9px;
  padding: 10px 11px; outline: none;
}
.channel-dialog-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(227,179,65,.12); }
.channel-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 6px; }

/* Resizable three-pane layout and video-card sizing */
:root {
  --library-width: 430px;
  --queue-width: 330px;
  --video-thumb-width: 150px;
}

@media (min-width: 1101px) {
  .app-grid {
    grid-template-columns: var(--library-width) 7px minmax(360px, 1fr) 7px var(--queue-width);
  }

  .sidebar { border-right: 0; }
  .queue-pane { border-left: 0; }

  .column-resizer {
    position: relative;
    z-index: 8;
    cursor: col-resize;
    touch-action: none;
    background: transparent;
    outline: none;
  }
  .column-resizer::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 3px;
    width: 1px;
    background: var(--line);
    transition: background .12s ease, box-shadow .12s ease;
  }
  .column-resizer:hover::after,
  .column-resizer:focus-visible::after,
  body.layout-resizing .column-resizer::after {
    background: var(--accent);
    box-shadow: 0 0 0 1px rgba(227,179,65,.18);
  }
}

.video-row {
  position: relative;
  grid-template-columns: min(var(--video-thumb-width), 52%) minmax(0, 1fr) auto;
  min-height: 0;
}

.video-row-resizer {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -4px;
  height: 9px;
  cursor: ns-resize;
  touch-action: none;
  z-index: 3;
  outline: none;
}
.video-row-resizer::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 46px;
  height: 2px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: transparent;
  transition: background .12s ease;
}
.video-row:hover .video-row-resizer::after,
.video-row-resizer:focus-visible::after,
body.video-size-resizing .video-row-resizer::after {
  background: #53606d;
}
.video-row-resizer:hover::after,
.video-row-resizer:focus-visible::after,
body.video-size-resizing .video-row-resizer::after {
  background: var(--accent);
}

body.layout-resizing,
body.video-size-resizing {
  user-select: none;
}
body.layout-resizing { cursor: col-resize; }
body.video-size-resizing { cursor: ns-resize; }

@media (max-width: 1100px) {
  .column-resizer { display: none; }
}

@media (max-width: 760px) {
  .video-row { grid-template-columns: min(110px, 42%) minmax(0,1fr); }
  .video-row-resizer { display: none; }
}

/* Independent vertical scrolling for the three desktop columns */
@media (min-width: 1101px) {
  html,
  body:not(.login-page) {
    height: 100%;
  }

  body:not(.login-page) {
    overflow: hidden;
  }

  .app-grid {
    height: calc(100vh - 66px);
    min-height: 0;
    overflow: hidden;
  }

  .sidebar,
  .content,
  .queue-pane {
    height: 100%;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    scrollbar-gutter: stable;
  }

  .column-resizer {
    height: 100%;
  }
}


/* Mobile/tablet pane navigation.
   This intentionally overrides the older <=1100px two-column/off-canvas rules.
   Phones (including browsers using a desktop-like ~980px viewport) get one
   full-width pane at a time: Library, Videos, or Up Next. */
.mobile-pane-tabs {
  display: none;
}

@media (max-width: 1100px) {
  body:not(.login-page) {
    height: 100dvh;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }

  .topbar {
    position: relative;
    top: auto;
    flex: 0 0 auto;
  }

  .mobile-pane-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    flex: 0 0 auto;
    min-height: 42px;
    background: #101419;
    border-bottom: 1px solid var(--line);
    z-index: 19;
  }

  .mobile-pane-tab {
    min-width: 0;
    border: 0;
    border-radius: 0;
    border-right: 1px solid var(--line);
    padding: 9px 8px;
    background: transparent;
    color: var(--muted);
    font-weight: 800;
    white-space: nowrap;
  }

  .mobile-pane-tab:last-child {
    border-right: 0;
  }

  .mobile-pane-tab[aria-selected="true"] {
    background: var(--panel-2);
    color: var(--accent-2);
    box-shadow: inset 0 -2px 0 var(--accent);
  }

  .mobile-pane-badge {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    margin-left: 4px;
    padding: 1px 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: inherit;
    font-size: 10px;
    line-height: 1.25;
  }

  .app-grid {
    display: block !important;
    grid-template-columns: none !important;
    flex: 1 1 auto;
    width: 100%;
    height: auto !important;
    min-height: 0 !important;
    overflow: hidden !important;
  }

  .column-resizer {
    display: none !important;
  }

  .sidebar,
  .content,
  .queue-pane {
    display: none !important;
    position: static !important;
    inset: auto !important;
    grid-column: auto !important;
    width: 100% !important;
    max-width: none !important;
    height: 100% !important;
    max-height: none !important;
    min-height: 0 !important;
    transform: none !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior-y: contain;
    scrollbar-gutter: stable;
    border-left: 0 !important;
    border-right: 0 !important;
    border-top: 0 !important;
  }

  body[data-mobile-pane="library"] .sidebar {
    display: block !important;
  }

  body[data-mobile-pane="videos"] .content {
    display: block !important;
  }

  body[data-mobile-pane="queue"] .queue-pane {
    display: block !important;
  }

  body.player-open .app-grid {
    height: auto !important;
    min-height: 0 !important;
    padding-bottom: 0 !important;
  }

  body.player-open .sidebar,
  body.player-open .content,
  body.player-open .queue-pane {
    min-height: 0 !important;
    overflow-y: auto !important;
  }
}

@media (max-width: 760px) {
  .sidebar,
  .content,
  .queue-pane {
    max-height: none !important;
  }

  .content {
    padding: 16px 12px 18px !important;
  }

  .sidebar,
  .queue-pane {
    padding: 14px 12px 18px !important;
  }
}

/* Interactive PC rescan status */
.rescan-progress {
  position: fixed;
  z-index: 95;
  top: 78px;
  right: 18px;
  width: min(470px, calc(100vw - 36px));
  padding: 14px 15px 13px;
  background: rgba(15, 19, 23, .98);
  border: 1px solid #3a4652;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.rescan-progress-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.rescan-progress-title { font-weight: 850; font-size: 15px; }
.rescan-progress-phase { margin-top: 2px; color: var(--accent-2); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .045em; }
.rescan-elapsed { flex: 0 0 auto; color: var(--muted); font: 700 12px/1.4 Consolas, "Cascadia Mono", monospace; }
.rescan-progress-track {
  height: 6px;
  margin: 11px 0 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #090b0e;
  border: 1px solid #252d35;
}
.rescan-progress-bar {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: var(--accent);
  transition: width .35s ease;
}
.rescan-progress-bar.indeterminate {
  width: 34%;
  animation: rescan-indeterminate 1.15s ease-in-out infinite alternate;
}
@keyframes rescan-indeterminate {
  from { transform: translateX(-15%); }
  to { transform: translateX(210%); }
}
.rescan-progress-message { font-size: 13px; line-height: 1.35; }
.rescan-progress-location {
  margin-top: 5px;
  min-height: 17px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}
.rescan-progress-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}
.rescan-progress.failed { border-color: rgba(255,107,107,.7); }
.rescan-progress.failed .rescan-progress-phase { color: var(--danger); }
.rescan-progress.completed { border-color: rgba(227,179,65,.62); }

@media (max-width: 760px) {
  .rescan-progress {
    top: auto;
    right: 10px;
    bottom: 10px;
    width: calc(100vw - 20px);
    max-height: 46vh;
    overflow: auto;
  }
}

/* Channel source-folder tree */
.main-folder-group-toggle { margin-top: 7px; color: var(--text); }
.folder-list-main { margin-bottom: 5px; }
.nav-folder .folder-name::before {
  content: '▸'; display: inline-block; margin-right: 6px; color: var(--accent); font-size: 11px;
}
.hidden-folder .folder-name::before { color: var(--muted); }

/* Video multi-select and deletion tombstones */
.video-row.selected-video-row {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
  background: var(--panel-2);
}
.video-row.selected-video-row:hover {
  border-color: var(--accent-2);
  box-shadow: inset 0 0 0 1px var(--accent-2);
}
.deleted-video-row {
  opacity: .72;
}
.deleted-video-row:hover {
  opacity: 1;
}
.deleted-video-title {
  appearance: none;
  display: block;
  width: 100%;
  margin: 0 0 7px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  text-align: left;
  font: inherit;
  font-weight: 750;
  line-height: 1.25;
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}
.deleted-video-title:hover,
.deleted-video-title:focus-visible {
  color: var(--text);
  background: transparent;
  filter: none;
}
.deleted-video-title:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.deleted-video-thumb {
  display: grid;
  place-items: center;
  color: var(--muted);
  border: 1px dashed var(--line);
}
.deleted-thumb-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.deleted-video-status {
  font-weight: 800;
  letter-spacing: .04em;
}
.deleted-video-hint {
  max-width: 140px;
  text-align: right;
}
body.video-selecting { user-select: none; cursor: default; }


/* YouTube-style custom player responsive adjustments */
@media (max-width: 700px) {
  .yt-controls { padding-left: 8px; padding-right: 8px; padding-bottom: 4px; }
  .yt-control-button { width: 36px; padding-left: 6px; padding-right: 6px; }
  .yt-volume-group { width: 38px; }
  .yt-volume-group:hover, .yt-volume-group:focus-within { width: 92px; }
  .yt-volume-slider { width: 50px; min-width: 50px; }
  .yt-time-text { font-size: 11px; }
  .yt-settings-menu { right: 44px; bottom: 54px; }
  .yt-center-play, .yt-center-play svg { width: 56px; height: 40px; }
}


/* Server-side Stockfish 18 analysis */
.engine-toggle-button {
  width: auto !important;
  min-width: 38px;
  padding: 0 7px !important;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .04em;
}
.engine-toggle-button.engine-on { color: #ff4e45; }
.engine-secondary-control.active { color: #ff4e45; opacity: 1; }
.engine-position-lock-button .engine-lock-closed-icon { display: none; }
.engine-position-lock-button.active .engine-lock-open-icon { display: none; }
.engine-position-lock-button.active .engine-lock-closed-icon { display: block; }
.engine-pause-control .engine-resume-icon { display: none; }
.engine-pause-control.active .engine-pause-icon { display: none; }
.engine-pause-control.active .engine-resume-icon { display: block; }
.engine-analysis-panel {
  position: absolute;
  top: 44px;
  right: 14px;
  z-index: 9;
  display: flex;
  width: min(525px, calc(100% - 28px));
  max-height: min(450px, 78vh);
  overflow: hidden;
  border-radius: 6px;
  background: rgba(8,8,8,.20);
  color: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.38);
  pointer-events: none;
  backdrop-filter: blur(3px);
}
.engine-analysis-panel[hidden] { display: none !important; }
/* Brighten the regular video-player Engine popup foreground by 50% without affecting the translucent shell background.
   Add a restrained dark edge/shadow so popup text stays legible over bright video captions. */
.engine-analysis-panel > .engine-eval-column,
.engine-analysis-panel > .engine-analysis-content {
  filter: brightness(1.5);
  text-shadow:
    -1px 0 1px rgba(0,0,0,.82),
     1px 0 1px rgba(0,0,0,.82),
     0 -1px 1px rgba(0,0,0,.82),
     0 1px 1px rgba(0,0,0,.90),
     0 2px 2px rgba(0,0,0,.72);
}
.engine-eval-column {
  position: relative;
  flex: 0 0 43px;
  min-height: 130px;
  background: #222;
  overflow: hidden;
}
.engine-eval-fill {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 50%;
  background: #f1f1f1;
  transition: height .18s ease;
}
.engine-eval-label {
  position: absolute;
  z-index: 1;
  left: 0; right: 0; top: 5px;
  text-align: center;
  font-size: 12.5px;
  line-height: 1;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 1px 2px #000;
}
.engine-analysis-content { min-width: 0; flex: 1; padding: 10px 13px 11px; }
.engine-analysis-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 15px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .04em;
  color: #bbb;
}
.engine-analysis-heading-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 9px;
}
.engine-line-controls {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  letter-spacing: 0;
}
.engine-line-toggle {
  width: 25px;
  height: 25px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 4px;
  background: rgba(255,255,255,.08);
  color: #fff;
  font: 700 17.5px/22.5px system-ui, sans-serif;
  cursor: pointer;
}
.engine-line-toggle:hover:not(:disabled),
.engine-line-toggle:focus-visible:not(:disabled) { background: rgba(255,255,255,.18); }
.engine-line-toggle:disabled { opacity: .35; cursor: default; }
.engine-line-count { min-width: 48px; text-align: center; white-space: nowrap; }
.engine-best-move { margin-top: 6px; font-size: 18.75px; font-weight: 700; }
.engine-pv {
  margin-top: 5px;
  max-height: 188px;
  overflow: auto;
  font: 13.75px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: #ddd;
  overflow-wrap: anywhere;
}
.engine-pv-line {
  display: grid;
  grid-template-columns: 23px 60px minmax(0,1fr);
  gap: 6px;
  align-items: baseline;
  padding: 3px 0;
}
.engine-pv-rank { color: #aaa; text-align: right; }
.engine-pv-score { color: #fff; font-weight: 700; white-space: nowrap; }
.engine-pv-moves { min-width: 0; overflow-wrap: anywhere; }
.engine-analysis-status {
  margin-top: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 12.5px;
  color: #aaa;
}
.player-stage:fullscreen .engine-analysis-panel,
.player-stage:-webkit-full-screen .engine-analysis-panel {
  top: 32px;
  right: 18px;
  width: min(575px, calc(100% - 36px));
}
@media (max-width: 700px) {
  .engine-analysis-panel { width: min(413px, calc(100% - 20px)); right: 10px; top: 36px; }
  .engine-pv { max-height: 140px; }
  .engine-analysis-heading-right { gap: 5px; }
}

/* Stockfish position-state correction controls */
.engine-analysis-panel { pointer-events: auto; }
.engine-state-tools {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}
.engine-state-tools[hidden] { display: none !important; }
.engine-state-icon {
  width: 31px;
  height: 30px;
  min-width: 31px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 4px;
  background: rgba(255,255,255,.09);
  color: #fff;
  font-size: 18.75px;
  line-height: 28px;
  text-align: center;
  cursor: pointer;
}
.engine-state-icon:hover,
.engine-state-icon:focus-visible { background: rgba(255,255,255,.18); }
.engine-position-dialog {
  padding: 0;
  border: 0;
  border-radius: 8px;
  color: #eee;
  background: #181818;
  box-shadow: 0 12px 42px rgba(0,0,0,.58);
  max-width: min(94vw, 520px);
}
.engine-position-dialog::backdrop { background: rgba(0,0,0,.72); }
.engine-position-dialog-content { padding: 16px; }
.engine-position-dialog-title { font-size: 17px; font-weight: 800; margin-bottom: 6px; }
.engine-position-dialog .muted { margin: 0 0 12px; line-height: 1.4; }
.engine-position-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.engine-correction-board {
  display: grid;
  grid-template-columns: repeat(8, minmax(34px, 52px));
  grid-template-rows: repeat(8, minmax(34px, 52px));
  width: fit-content;
  max-width: 100%;
  border: 2px solid #777;
  margin: 0 auto;
}
.engine-board-square {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 0;
  padding: 0;
  font-size: clamp(24px, 6vw, 38px);
  line-height: 1;
  color: #111;
  user-select: none;
}
.engine-board-square.light { background: #e6d3b0; }
.engine-board-square.dark { background: #9a704e; }
.engine-board-square.eligible {
  cursor: pointer;
  outline: 4px solid #ffcc33;
  outline-offset: -4px;
  box-shadow: inset 0 0 0 3px rgba(0,0,0,.32);
}
.engine-board-square.eligible:hover,
.engine-board-square.eligible:focus-visible { outline-width: 6px; }
.engine-castling-dialog-content { min-width: min(430px, 88vw); }
.engine-castling-choices { display: grid; gap: 8px; }
.engine-castling-choice {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  border-radius: 5px;
  background: rgba(255,255,255,.06);
}
.engine-castling-choice input { width: 18px; height: 18px; }
@media (max-width: 520px) {
  .engine-correction-board { grid-template-columns: repeat(8, minmax(30px, 10vw)); grid-template-rows: repeat(8, minmax(30px, 10vw)); }
}

/* Analysis board */
.analysis-board-open-button { width: 36px; }
.analysis-board-dialog {
  width: min(1520px, 98vw);
  max-width: 1520px;
  max-height: 96vh;
  padding: 0;
  border: 1px solid #39424c;
  border-radius: 8px;
  background: #10151b;
  color: #eef2f6;
  box-shadow: 0 22px 80px rgba(0,0,0,.72);
  overflow: hidden;
}
.analysis-board-dialog::backdrop { background: rgba(0,0,0,.82); }
.analysis-board-window { display: flex; flex-direction: column; min-height: min(900px, 94vh); background: #0d1218; }
.analysis-board-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 12px 0 18px;
  background: linear-gradient(#182029, #11171e);
  border-bottom: 1px solid #313a44;
  font-size: 17px;
  font-weight: 750;
  letter-spacing: .01em;
}
.analysis-window-close {
  width: 38px;
  height: 34px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: #d8dde2;
  font: 400 25px/1 system-ui, sans-serif;
  cursor: pointer;
}
.analysis-window-close:hover { background: #8d2929; color: #fff; }
.analysis-board-commandbar {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 52px;
  padding: 7px 16px;
  background: #141b22;
  border-bottom: 1px solid #2b343e;
}
.analysis-command-divider { width: 1px; height: 28px; margin: 0 7px; background: #3a434d; }
.analysis-command-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: #e2e7eb;
  cursor: pointer;
  font: 500 13px/1 system-ui, sans-serif;
}
.analysis-command-button svg { width: 18px; height: 18px; fill: currentColor; }
.analysis-command-button:hover:not(:disabled), .analysis-command-button:focus-visible:not(:disabled) { background: #202a34; border-color: #38434e; }
.analysis-command-button:disabled { opacity: .36; cursor: default; }
.analysis-board-layout {
  display: grid;
  grid-template-columns: minmax(440px, .95fr) minmax(420px, 2fr) minmax(290px, .9fr);
  gap: 14px;
  min-height: 0;
  flex: 1;
  padding: 14px;
  background: #0d1218;
}
.analysis-left-rail,
.analysis-right-rail,
.analysis-board-center { min-width: 0; min-height: 0; }
.analysis-left-rail,
.analysis-right-rail { display: flex; flex-direction: column; gap: 12px; }
.analysis-board-center { display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch; }
.analysis-panel {
  border: 1px solid #303a44;
  border-radius: 4px;
  background: linear-gradient(180deg, #121920 0%, #0f151b 100%);
  overflow: hidden;
}
.analysis-panel-heading {
  padding: 9px 12px;
  border-bottom: 1px solid #303a44;
  color: #9dcbf4;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .01em;
  background: #121920;
}
.analysis-source-panel { flex: 0 0 auto; }
.analysis-source-title { padding: 12px 12px 4px; color: #f2f4f6; font-size: 13px; font-weight: 650; }
.analysis-source-subtitle { padding: 0 12px 12px; color: #89949f; font-size: 11px; line-height: 1.45; }
.analysis-moves-panel { display: flex; flex-direction: column; flex: 1 1 0; min-height: 360px; overflow: hidden; }
.analysis-moves-panel-heading {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 44px;
  padding: 4px 5px 4px 10px;
}
.analysis-moves-panel-title {
  flex: 0 0 auto;
  white-space: nowrap;
}
.analysis-tree-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1px;
  min-width: 0;
  margin-left: auto;
}
.analysis-tree-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  color: #aeb9c2;
  cursor: pointer;
}
.analysis-tree-action svg {
  width: 23px;
  height: 23px;
  fill: currentColor;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.analysis-tree-action:hover:not(:disabled),
.analysis-tree-action:focus-visible:not(:disabled) {
  background: #24313c;
  border-color: #52616e;
  color: #fff;
  outline: none;
}
.analysis-tree-action.danger { color: #c8a3a6; }
.analysis-tree-action.danger:hover:not(:disabled),
.analysis-tree-action.danger:focus-visible:not(:disabled) {
  background: #4a2225;
  border-color: #874047;
  color: #ffd8dc;
}
.analysis-tree-action.active:not(:disabled) {
  background: #20384b;
  border-color: #3e6a8b;
  color: #d8efff;
}
.analysis-tree-action:disabled { opacity: .28; cursor: default; }
.analysis-annotation-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 52px;
  width: 52px;
  height: 36px;
  min-width: 52px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}
.analysis-annotation-control select {
  width: 52px;
  min-width: 52px;
  height: 36px;
  padding: 0 2px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #c8d1d8;
  cursor: pointer;
  text-align: center;
  text-align-last: center;
  font: 750 20px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.analysis-annotation-control select:hover:not(:disabled),
.analysis-annotation-control select:focus-visible:not(:disabled) {
  border-color: #52616e;
  background: #24313c;
  color: #fff;
  outline: none;
}
.analysis-annotation-control:has(select:disabled) { opacity: .28; }
.analysis-status-panel { flex: 0 0 auto; }
.analysis-status-row { display: flex; align-items: center; gap: 8px; padding: 12px 12px 7px; font-size: 12px; }
.analysis-status-dot { width: 10px; height: 10px; border-radius: 50%; background: #43bd55; box-shadow: 0 0 0 2px rgba(67,189,85,.13); }
.analysis-status-note { padding: 0 12px 12px 30px; color: #8a96a1; font-size: 10px; line-height: 1.45; }
.analysis-moves-heading,
.analysis-move-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
}
.analysis-moves-heading {
  flex: 0 0 auto;
  min-height: 34px;
  align-items: center;
  padding: 0 4px;
  border-bottom: 1px solid #2d3740;
  color: #b9c3cc;
  background: #171f27;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}
.analysis-move-list { flex: 1 1 0; height: 0; min-height: 0; overflow-x: hidden; overflow-y: auto; overscroll-behavior-y: contain; scrollbar-gutter: stable; padding: 4px 0 10px; scrollbar-color: #46515b #111820; }
.analysis-move-row { min-height: 29px; align-items: center; padding-left: calc(var(--variation-depth, 0) * 11px); border-bottom: 1px solid rgba(48,58,68,.42); }
.analysis-move-row.variation-start { border-top: 1px dashed #4b5966; margin-top: 4px; padding-top: 3px; }
.analysis-move-number { padding: 4px 7px; color: #84909a; text-align: right; font: 11px/1.2 ui-monospace, monospace; }
.analysis-move-cell { min-width: 0; padding: 2px 3px; }
.analysis-move-button {
  width: 100%;
  min-height: 24px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 3px 7px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  color: #e0e5e9;
  text-align: left;
  cursor: pointer;
  font: 12px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.analysis-move-button:hover { background: #222d37; }
.analysis-move-button.current { background: linear-gradient(90deg, #1e4f7b, #173a58); border-color: #2d6a9a; color: #fff; }
.analysis-move-button.has-comment::after { content: '  ◆'; color: #e3b341; font-size: 8px; }
.analysis-move-comment {
  display: -webkit-box;
  margin: 1px 7px 4px;
  overflow: hidden;
  color: #aab7c1;
  font: italic 9px/1.3 system-ui, sans-serif;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.analysis-move-row.variation-collapsed { background: rgba(62,79,93,.12); }
.analysis-variation-collapsed-note {
  margin: 0 7px 4px;
  color: #7ea8cc;
  font: 650 9px/1.2 system-ui, sans-serif;
  white-space: nowrap;
}
.analysis-variation-wrap { border-left: 2px solid #53606b; margin-left: calc(42px + var(--variation-depth, 1) * 10px); }
.analysis-move-empty { padding: 18px 12px; color: #7f8b96; text-align: center; font-size: 11px; }
.analysis-board-shell {
  position: relative;
  width: min(100%, var(--analysis-board-size, 760px));
  margin: 0 auto;
  padding: var(--analysis-board-frame, 22px);
  border: 1px solid #5a3219;
  border-radius: 0;
  background:
    repeating-linear-gradient(3deg, rgba(44,20,8,.14) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(92deg, rgba(255,208,151,.035) 0 2px, transparent 2px 8px),
    linear-gradient(100deg, #91512d 0%, #77401f 24%, #a15d34 48%, #6e381b 73%, #8e512d 100%);
  box-shadow: inset 0 0 0 4px #3f2212, inset 0 0 0 7px rgba(220,150,91,.22), 0 8px 24px rgba(0,0,0,.45);
}
.analysis-board {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  aspect-ratio: 1;
  width: 100%;
  border: 2px solid #3e2312;
  border-radius: 0;
  box-shadow: 0 0 0 1px rgba(231,174,116,.32);
  overflow: hidden;
}
.analysis-board-square,
.engine-board-square {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 0;
  border-radius: 0 !important;
  padding: 0;
  overflow: hidden;
  user-select: none;
}
.analysis-board-square { cursor: pointer; touch-action: none; }
.analysis-board.computer-turn .analysis-board-square { cursor: default; }
.analysis-board-square.wood-light,
.engine-board-square.light {
  background-color: #ddb67e;
  background-image:
    repeating-linear-gradient(5deg, rgba(112,69,27,.10) 0 1px, transparent 1px 7px, rgba(255,255,255,.08) 7px 8px, transparent 8px 14px),
    linear-gradient(93deg, rgba(255,255,255,.12), rgba(144,89,36,.03) 50%, rgba(110,65,25,.08));
}
.analysis-board-square.wood-dark,
.engine-board-square.dark {
  background-color: #aa7b4d;
  background-image:
    repeating-linear-gradient(-4deg, rgba(76,40,16,.13) 0 1px, transparent 1px 6px, rgba(230,176,115,.09) 6px 7px, transparent 7px 13px),
    linear-gradient(96deg, rgba(197,140,84,.17), rgba(105,59,27,.06) 53%, rgba(222,164,103,.10));
}
.cvq-chess-piece {
  display: block;
  width: 96.8%;
  height: 96.8%;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  background-origin: content-box;
  background-clip: content-box;
  pointer-events: none;
  filter: drop-shadow(2px 4px 2px rgba(0,0,0,.42));
}
.analysis-board-square.selected { box-shadow: inset 0 0 0 4px rgba(74,156,224,.90); z-index: 1; }
.analysis-board-square.legal-target { box-shadow: inset 0 0 0 4px rgba(83,181,94,.70); }
.analysis-board-square.capture-target { box-shadow: inset 0 0 0 5px rgba(211,73,62,.76); }
.analysis-board-square.dragging-source .cvq-chess-piece { opacity: .28; }
.analysis-board-square.drag-legal { box-shadow: inset 0 0 0 4px rgba(83,181,94,.67); }
.analysis-board-square.drag-capture { box-shadow: inset 0 0 0 5px rgba(211,73,62,.74); }
.analysis-board-square.drag-over { outline: 5px solid rgba(94,174,236,.94); outline-offset: -5px; z-index: 3; }
.analysis-board-square.drag-invalid { outline: 4px solid rgba(181,63,55,.72); outline-offset: -4px; }
.analysis-drag-ghost {
  position: fixed;
  z-index: 100000;
  width: 90px;
  height: 90px;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: .94;
  filter: drop-shadow(4px 7px 5px rgba(0,0,0,.52));
}
.analysis-legal-dot {
  position: absolute;
  width: 22%;
  height: 22%;
  border-radius: 50%;
  background: rgba(36,102,42,.62);
  pointer-events: none;
}
.analysis-promotion-overlay {
  position: absolute;
  inset: var(--analysis-board-frame, 22px);
  z-index: 4;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,.48);
}
.analysis-promotion-overlay[hidden] { display: none !important; }
.analysis-promotion-card {
  min-width: 260px;
  padding: 14px;
  border-radius: 5px;
  background: #182129;
  border: 1px solid #53616d;
  box-shadow: 0 10px 30px rgba(0,0,0,.58);
  text-align: center;
}
.analysis-promotion-title { margin-bottom: 9px; font-weight: 750; }
.analysis-promotion-choices { display: grid; grid-template-columns: repeat(4, 56px); justify-content: center; gap: 8px; margin-bottom: 10px; }
.analysis-promotion-button {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 2px;
  border: 1px solid #697987;
  border-radius: 3px;
  background: #d8b37d;
  cursor: pointer;
}
.analysis-promotion-button:hover { outline: 2px solid #8ec8f4; }
.analysis-board-actionbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: min(100%, var(--analysis-board-size, 760px));
  margin: 12px auto 0;
}
.analysis-square-action {
  display: grid;
  place-items: center;
  width: var(--analysis-nav-width, 48px);
  height: var(--analysis-nav-height, 42px);
  padding: 0;
  border: 1px solid #394550;
  border-radius: 4px;
  background: #171f27;
  color: #e6ebef;
  cursor: pointer;
}
.analysis-square-action svg { width: 20px; height: 20px; fill: currentColor; }
.analysis-square-action:hover:not(:disabled) { background: #222d37; border-color: #53616e; }
.analysis-square-action:disabled { opacity: .33; cursor: default; }
.analysis-board-fen {
  width: min(100%, var(--analysis-board-size, 760px));
  margin: 8px auto 0;
  color: #84909b;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font: 10px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.analysis-engine-panel { flex: 1 1 auto; min-height: 460px; }
.analysis-board-engine {
  width: 100%;
  max-height: none;
  overflow: auto;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  font: inherit;
}
.analysis-engine-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 13px 14px;
  border-bottom: 1px solid #303a44;
}
.analysis-engine-name { color: #eef2f5; font-size: 13px; font-weight: 750; }
.analysis-engine-state { font-size: 11px; font-weight: 650; }
.analysis-engine-state.on { color: #55c55c; }
.analysis-engine-state.off { color: #8c98a2; }
.analysis-engine-off-card { margin: 12px; padding: 14px; border: 1px solid #303a44; border-radius: 4px; background: #121920; color: #a4afb8; font-size: 11px; line-height: 1.5; }
.analysis-engine-section { border-top: 1px solid #303a44; padding: 11px 14px 13px; }
.analysis-engine-section:first-of-type { border-top: 0; }
.analysis-engine-section-title { margin-bottom: 10px; color: #9dcbf4; font-size: 12px; font-weight: 750; }
.analysis-engine-eval { color: #f6f8fa; font-size: 28px; line-height: 1.1; font-weight: 750; text-align: center; }
.analysis-engine-eval-description { margin-top: 7px; color: #c1c8ce; font-size: 11px; text-align: center; }
.analysis-engine-pv-row { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 8px; padding: 5px 0; color: #d7dde2; font: 11px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.analysis-engine-pv-score { color: #f2f5f7; font-weight: 750; }
.analysis-engine-pv-moves { min-width: 0; overflow-wrap: anywhere; }
.analysis-engine-waiting { color: #8d99a3; font-size: 11px; }
.analysis-engine-info-row { display: grid; grid-template-columns: 70px 1fr; gap: 10px; padding: 2px 0; color: #d0d7dc; font-size: 11px; }
.analysis-engine-info-row span:first-child { color: #8f9aa4; }
.analysis-board-controls-panel { flex: 0 0 auto; }
.analysis-board-controls-stack { display: grid; gap: 8px; padding: 11px; }
.analysis-wide-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid #3a4651;
  border-radius: 4px;
  background: linear-gradient(#1c252e, #171f27);
  color: #e3e8ec;
  cursor: pointer;
  font: 500 12px/1 system-ui, sans-serif;
}
.analysis-wide-control svg { width: 18px; height: 18px; fill: currentColor; }
.analysis-wide-control:hover:not(:disabled) { background: #222d37; border-color: #53616e; }
.analysis-wide-control.active,
.analysis-wide-control[aria-pressed="true"] { background: #1d425f; border-color: #3977a2; color: #f5fbff; }
.analysis-wide-control[hidden] { display: none !important; }
.analysis-wide-control kbd { padding: 2px 5px; border: 1px solid #4a5662; border-radius: 3px; background: #111820; color: #9eabb5; font: 9px/1.2 ui-monospace, monospace; }
.analysis-board-hint { padding: 7px 14px 9px; border-top: 1px solid #2b343e; background: #11171d; color: #74808b; font-size: 10px; text-align: center; }

@media (max-width: 1220px) {
  .analysis-board-dialog { width: 99vw; max-height: 99vh; }
  .analysis-board-window { min-height: 0; max-height: 99vh; }
  .analysis-board-layout { grid-template-columns: minmax(440px, 440px) minmax(500px, 1fr); overflow: auto; }
  .analysis-right-rail { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 320px; }
  .analysis-engine-panel { min-height: 260px; }
}
@media (max-width: 840px) {
  .analysis-board-commandbar { overflow-x: auto; }
  .analysis-command-button span { display: none; }
  .analysis-command-divider { margin: 0 2px; }
  .analysis-board-layout { display: flex; flex-direction: column; overflow: auto; }
  .analysis-board-center { order: 1; }
  .analysis-left-rail { order: 2; }
  .analysis-right-rail { order: 3; display: flex; }
  .analysis-board-shell { width: min(94vw, 700px); padding: 14px; }
  .analysis-promotion-overlay { inset: 14px; }
  .analysis-moves-panel { min-height: 280px; }
}
.engine-state-piece { width: 27.5px; height: 27.5px; }
.piece-black-pawn { background-image: url("/assets/chess/b-pawn.png"); }
.piece-black-rook { background-image: url("/assets/chess/b-rook.png"); }

.analysis-board-files {
  position: absolute;
  left: var(--analysis-board-frame, 22px);
  right: var(--analysis-board-frame, 22px);
  bottom: 3px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  color: #f0d7b1;
  text-align: center;
  font: 700 9px/1 ui-monospace, monospace;
  text-shadow: 0 1px 1px rgba(0,0,0,.8);
  pointer-events: none;
}
.analysis-board-ranks {
  position: absolute;
  left: 5px;
  top: var(--analysis-board-frame, 22px);
  bottom: var(--analysis-board-frame, 22px);
  display: grid;
  grid-template-rows: repeat(8, 1fr);
  color: #f0d7b1;
  align-items: center;
  font: 700 9px/1 ui-monospace, monospace;
  text-shadow: 0 1px 1px rgba(0,0,0,.8);
  pointer-events: none;
}
@media (max-width: 840px) {
  .analysis-board-files { left: 14px; right: 14px; }
  .analysis-board-ranks { top: 14px; bottom: 14px; }
}

/* Analysis window resizing, maximization, responsive layout, position-state editor */
.analysis-board-dialog {
  width: min(1520px, calc(100vw - 24px));
  height: min(920px, calc(100dvh - 24px));
  min-width: min(760px, calc(100vw - 12px));
  min-height: min(520px, calc(100dvh - 12px));
  max-width: calc(100vw - 12px);
  max-height: calc(100dvh - 12px);
  margin: auto;
  overflow: hidden;
}
.analysis-board-window {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  max-height: none;
  overflow: hidden;
}
.analysis-board-titlebar { flex: 0 0 auto; user-select: none; }
.analysis-window-buttons { display: flex; align-items: center; gap: 2px; }
.analysis-window-maximize {
  width: 38px;
  height: 34px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: #d8dde2;
  font: 500 20px/1 system-ui, sans-serif;
  cursor: pointer;
}
.analysis-window-maximize:hover { background: #29343f; color: #fff; }
.analysis-board-dialog.maximized {
  position: fixed;
  inset: 0;
  width: 100vw !important;
  height: 100dvh !important;
  min-width: 0;
  min-height: 0;
  max-width: none;
  max-height: none;
  margin: 0;
  border-radius: 0;
  border-width: 0;
}
.analysis-board-resize-grip {
  position: absolute;
  right: 1px;
  bottom: 1px;
  z-index: 20;
  width: 22px;
  height: 22px;
  cursor: nwse-resize;
  opacity: .72;
  background:
    linear-gradient(135deg, transparent 0 48%, #70808d 49% 55%, transparent 56% 67%, #70808d 68% 74%, transparent 75% 100%);
}
.analysis-board-dialog.maximized .analysis-board-resize-grip { display: none; }
.analysis-board-layout { overflow: hidden; }
.analysis-board-center { overflow: hidden; }
.analysis-left-rail { overflow: hidden; }
.analysis-right-rail { overflow: auto; scrollbar-width: thin; }
.analysis-moves-panel { min-height: 140px; }
.analysis-engine-panel { min-height: 0; }

/* Reflow based on the actual analysis-window width, including manual resizing. */
.analysis-board-dialog.analysis-layout-medium .analysis-board-layout {
  grid-template-columns: minmax(440px, 440px) minmax(360px, 2fr);
  overflow: auto;
}
.analysis-board-dialog.analysis-layout-medium .analysis-right-rail { overflow: visible; }
.analysis-board-dialog.analysis-layout-medium .analysis-right-rail {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
}
.analysis-board-dialog.analysis-layout-medium .analysis-engine-panel { min-height: 300px; }
.analysis-board-dialog.analysis-layout-narrow .analysis-board-commandbar { overflow-x: auto; }
.analysis-board-dialog.analysis-layout-narrow .analysis-command-button span { display: none; }
.analysis-board-dialog.analysis-layout-narrow .analysis-command-divider { margin: 0 2px; }
.analysis-board-dialog.analysis-layout-narrow .analysis-board-layout {
  display: flex;
  flex-direction: column;
  overflow: auto;
}
.analysis-board-dialog.analysis-layout-narrow .analysis-board-center { order: 1; }
.analysis-board-dialog.analysis-layout-narrow .analysis-left-rail { order: 2; overflow: visible; }
.analysis-board-dialog.analysis-layout-narrow .analysis-right-rail { order: 3; display: flex; overflow: visible; }
.analysis-board-dialog.analysis-layout-narrow .analysis-board-shell { width: min(94vw, 700px); padding: 14px; }
.analysis-board-dialog.analysis-layout-narrow .analysis-promotion-overlay { inset: 14px; }
.analysis-board-dialog.analysis-layout-narrow .analysis-moves-panel { min-height: 260px; }

/* Give PVs a predictable amount of space and scroll rather than clipping text. */
.analysis-engine-lines-section { min-height: 0; }
.analysis-engine-lines-viewport {
  height: var(--analysis-engine-lines-height, 190px);
  min-height: 120px;
  max-height: var(--analysis-engine-lines-height, 190px);
  overflow: auto;
  border: 1px solid #27323c;
  background: #0c1217;
  scrollbar-color: #4d5a66 #0c1217;
  scrollbar-width: thin;
}
.analysis-engine-lines-viewport::-webkit-scrollbar { width: 10px; height: 10px; }
.analysis-engine-lines-viewport::-webkit-scrollbar-track { background: #0c1217; }
.analysis-engine-lines-viewport::-webkit-scrollbar-thumb { background: #4d5a66; border: 2px solid #0c1217; border-radius: 5px; }
.analysis-engine-lines-viewport .analysis-engine-pv-row {
  width: max-content;
  min-width: 100%;
  grid-template-columns: 52px max-content;
  padding: 5px 8px;
}
.analysis-engine-lines-viewport .analysis-engine-pv-moves {
  white-space: nowrap;
  overflow-wrap: normal;
}
.analysis-engine-lines-viewport .analysis-engine-waiting { padding: 8px; }

/* Position-state editor */
.analysis-position-state-dialog {
  width: min(520px, calc(100vw - 24px));
  max-width: calc(100vw - 24px);
  max-height: calc(100dvh - 24px);
  padding: 0;
  border: 1px solid #46525e;
  border-radius: 7px;
  background: #111820;
  color: #eef2f6;
  box-shadow: 0 18px 60px rgba(0,0,0,.72);
}
.analysis-position-state-dialog::backdrop { background: rgba(0,0,0,.56); }
.analysis-position-state-form { display: grid; gap: 13px; padding: 18px; overflow: auto; max-height: calc(100dvh - 24px); }
.analysis-position-state-title { color: #f2f5f7; font-size: 17px; font-weight: 750; }
.analysis-position-state-note { color: #9ba7b1; font-size: 11px; line-height: 1.45; }
.analysis-position-state-field { display: grid; gap: 6px; color: #cdd5dc; font-size: 12px; }
.analysis-position-state-field select,
.analysis-position-state-field input[type="number"] {
  width: 100%;
  min-height: 36px;
  box-sizing: border-box;
  border: 1px solid #3b4854;
  border-radius: 4px;
  padding: 6px 9px;
  background: #0d141a;
  color: #eef2f6;
}
.analysis-position-state-castling {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  margin: 0;
  border: 1px solid #34404a;
  border-radius: 4px;
  padding: 10px 12px 12px;
}
.analysis-position-state-castling legend { padding: 0 5px; color: #9dcbf4; font-size: 12px; font-weight: 700; }
.analysis-position-state-castling label { display: flex; align-items: center; gap: 7px; color: #d4dbe0; font-size: 12px; }
.analysis-position-state-castling label:has(input:disabled) { opacity: .42; }
.analysis-position-state-counters { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.analysis-position-state-warning {
  border: 1px solid #6b5730;
  border-radius: 4px;
  padding: 9px 10px;
  background: #2c2517;
  color: #e5cf98;
  font-size: 11px;
  line-height: 1.4;
}
.analysis-position-state-actions { display: flex; justify-content: flex-end; gap: 8px; padding-top: 3px; }

@media (max-width: 840px) {
  .analysis-board-dialog {
    width: 100vw !important;
    height: 100dvh !important;
    min-width: 0;
    min-height: 0;
    max-width: none;
    max-height: none;
    margin: 0;
    border: 0;
    border-radius: 0;
  }
  .analysis-board-resize-grip, .analysis-window-maximize { display: none; }
  .analysis-board-window { height: 100dvh; }
  .analysis-board-shell { width: min(94vw, calc(100dvh - 190px), 700px) !important; }
  .analysis-engine-lines-viewport { height: 150px; max-height: 150px; }
  .analysis-position-state-castling, .analysis-position-state-counters { grid-template-columns: 1fr; }
}

/* Phone landscape: the board is sized from viewport HEIGHT, so it fits on screen. */
@media (orientation: landscape) and (max-height: 600px) and (max-width: 1000px) {
  .analysis-board-titlebar { min-height: 36px; padding: 0 7px 0 11px; font-size: 14px; }
  .analysis-window-close { width: 34px; height: 30px; font-size: 22px; }
  .analysis-board-commandbar { min-height: 38px; padding: 3px 6px; gap: 1px; }
  .analysis-command-button { min-height: 30px; padding: 0 8px; }
  .analysis-command-button svg { width: 16px; height: 16px; }
  .analysis-board-layout { padding: 6px; gap: 8px; }
  .analysis-board-center { flex: 0 0 auto; }
  .analysis-board-shell {
    width: min(54vw, calc(100dvh - 142px), 430px) !important;
    padding: 8px !important;
  }
  .analysis-board-files { left: 8px; right: 8px; bottom: 1px; font-size: 7px; }
  .analysis-board-ranks { top: 8px; bottom: 8px; left: 2px; font-size: 7px; }
  .analysis-board-actionbar { margin-top: 4px; gap: 5px; }
  .analysis-square-action { width: 36px; height: 30px; }
  .analysis-square-action svg { width: 16px; height: 16px; }
  .analysis-board-fen { margin-top: 3px; font-size: 8px; }
  .analysis-board-hint { display: none; }
  .analysis-moves-panel { min-height: 190px !important; }
  .analysis-engine-panel { min-height: 260px !important; }
  .analysis-engine-lines-viewport { height: 112px; min-height: 112px; max-height: 112px; }
  .analysis-position-state-dialog { width: min(600px, calc(100vw - 12px)); max-height: calc(100dvh - 12px); }
  .analysis-position-state-form { grid-template-columns: 1fr 1fr; gap: 8px 12px; padding: 10px 12px; max-height: calc(100dvh - 12px); }
  .analysis-position-state-title,
  .analysis-position-state-note,
  .analysis-position-state-warning,
  .analysis-position-state-actions { grid-column: 1 / -1; }
  .analysis-position-state-castling { grid-template-columns: 1fr 1fr; }
  .analysis-position-state-counters { grid-template-columns: 1fr 1fr; }
}


/* Analysis UX integration aliases */
.analysis-engine-pv-scroll {
  height: var(--analysis-engine-lines-height, 190px);
  min-height: 120px;
  max-height: var(--analysis-engine-lines-height, 190px);
  overflow: auto;
  border: 1px solid #27323c;
  background: #0c1217;
  scrollbar-color: #4d5a66 #0c1217;
  scrollbar-width: thin;
}
.analysis-engine-pv-scroll::-webkit-scrollbar { width: 10px; height: 10px; }
.analysis-engine-pv-scroll::-webkit-scrollbar-track { background: #0c1217; }
.analysis-engine-pv-scroll::-webkit-scrollbar-thumb { background: #4d5a66; border: 2px solid #0c1217; border-radius: 5px; }
.analysis-engine-pv-scroll .analysis-engine-pv-row {
  width: max-content;
  min-width: 100%;
  grid-template-columns: 52px max-content;
  padding: 6px 8px;
  border: 0;
  border-bottom: 1px solid #1c252d;
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.analysis-engine-pv-scroll .analysis-engine-pv-row:hover { background: #17232d; }
.analysis-engine-pv-scroll .analysis-engine-pv-moves { white-space: nowrap; overflow-wrap: normal; }
.analysis-comment-dialog { width: min(520px, calc(100vw - 24px)); }
.analysis-comment-content { display: grid; gap: 10px; }
.analysis-comment-text {
  width: 100%;
  min-height: 132px;
  resize: vertical;
  padding: 10px 11px;
  border: 1px solid #3a4650;
  border-radius: 4px;
  outline: none;
  background: #0e151b;
  color: #eef2f5;
  font: 13px/1.45 system-ui, sans-serif;
}
.analysis-comment-text:focus { border-color: #5d88ad; box-shadow: 0 0 0 2px rgba(93,136,173,.18); }
.analysis-comment-actions { align-items: center; }
.analysis-comment-action-spacer { flex: 1 1 auto; }
.analysis-position-state-content { display: grid; gap: 13px; padding: 18px; overflow: auto; max-height: calc(100dvh - 24px); }
.analysis-position-state-content .muted { margin: 0; color: #9ba7b1; font-size: 11px; line-height: 1.45; }
.analysis-state-grid { display: grid; gap: 12px; }
.analysis-state-grid > label { display: grid; gap: 6px; color: #cdd5dc; font-size: 12px; }
.analysis-state-grid select,
.analysis-state-grid input[type="number"] {
  width: 100%; min-height: 36px; box-sizing: border-box; border: 1px solid #3b4854;
  border-radius: 4px; padding: 6px 9px; background: #0d141a; color: #eef2f6;
}
.analysis-state-castling { display:grid; grid-template-columns:1fr 1fr; gap:8px 12px; margin:0; border:1px solid #34404a; border-radius:4px; padding:10px 12px 12px; }
.analysis-state-castling legend { padding:0 5px; color:#9dcbf4; font-size:12px; font-weight:700; }
.analysis-state-castling label { display:flex; align-items:center; gap:7px; color:#d4dbe0; font-size:12px; }
.analysis-state-castling label.disabled { opacity:.42; }
.analysis-window-buttons { display:flex; align-items:center; gap:2px; }
.analysis-board-resize-grip { touch-action:none; }
body.analysis-resizing { user-select:none; cursor:nwse-resize; }
@media (max-width: 840px) {
  .analysis-engine-pv-scroll { height:150px; max-height:150px; }
  .analysis-state-castling { grid-template-columns:1fr; }
}
@media (orientation: landscape) and (max-height: 600px) and (max-width: 1000px) {
  .analysis-engine-pv-scroll { height:112px; min-height:112px; max-height:112px; }
  .analysis-state-grid { grid-template-columns: 1fr 1fr; }
  .analysis-state-castling { grid-template-columns:1fr 1fr; }
}

@media (max-width: 760px) {
  body.player-open .main-workspace {
    grid-template-rows: minmax(0, 1fr) 14px var(--player-dock-height, 50%);
  }
}

/* Analysis Board video preview */
.analysis-command-button[aria-pressed="true"] {
  background: #21303d;
  border-color: #466176;
  color: #fff;
}
.analysis-video-panel {
  flex: 0 0 auto;
  width: 100%;
  height: auto;
  aspect-ratio: var(--analysis-video-aspect, 16 / 9);
  min-height: 0;
  box-sizing: border-box;
  background: #05080b;
  border-color: #394651;
}
.analysis-video-panel[hidden] { display: none !important; }
.analysis-video-preview {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
  cursor: pointer;
  pointer-events: auto;
}
.analysis-board-dialog.analysis-video-visible .analysis-moves-panel {
  min-height: 0;
}

@media (orientation: landscape) and (max-height: 600px) and (max-width: 1000px) {
  .analysis-board-dialog.analysis-video-visible .analysis-moves-panel { min-height: 120px !important; }
}


/* YouTube Direct source */
.youtube-player-mount {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  background: #000;
}
.youtube-player-host,
.youtube-player-host iframe,
.youtube-player-host .cvq-youtube-player-target,
.analysis-youtube-player,
.analysis-youtube-player iframe,
.analysis-youtube-player .cvq-youtube-player-target {
  display: block;
  width: 100% !important;
  height: 100% !important;
  min-width: 100%;
  min-height: 100%;
  border: 0;
  background: #000;
}
.youtube-player-host iframe,
.analysis-youtube-player iframe { pointer-events: auto; }
.player-stage:fullscreen .youtube-player-mount,
.player-stage:-webkit-full-screen .youtube-player-mount { width: 100%; height: 100%; }

.analysis-video-preview {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.analysis-youtube-player {
  position: absolute;
  inset: 0;
}

/* The normal title already appears beside the player. Avoid a non-playback overlay
   on top of the official YouTube player in Direct mode. */
.player-title-overlay { display: none !important; }

.dialog-action-spacer { flex: 1 1 auto; }
.analysis-fen-actions { display: flex; align-items: center; width: 100%; }

/* Dedicated ChessVideoQueue tool row. Keep app actions completely outside the
   resizable metadata card and outside the YouTube iframe/native control area. */
.player-dock {
  grid-template-rows: auto minmax(0, 1fr);
}
.player-app-toolbar-dedicated {
  grid-column: 1 / 3;
  grid-row: 1;
  width: 100%;
  min-width: 0;
  min-height: 38px;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 7px;
  margin: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  z-index: 5;
}
.player-app-toolbar-label {
  flex: 0 0 auto;
  margin-right: 2px;
  color: #9ba7b2;
  font: 700 11px/1 Arial, sans-serif;
  letter-spacing: .03em;
}
.player-app-toolbar-dedicated .player-app-button { flex: 0 0 auto; }
.player-info {
  grid-column: 1;
  grid-row: 2;
}
.player-stage {
  grid-column: 2;
  grid-row: 2;
}
.close-player {
  grid-column: 3;
  grid-row: 1;
}

@media (max-width: 760px) {
  .player-dock {
    grid-template-columns: minmax(0,1fr) 35px;
    grid-template-rows: auto auto minmax(0,1fr);
  }
  .player-app-toolbar-dedicated {
    grid-column: 1;
    grid-row: 1;
  }
  .player-app-toolbar-label { display: none; }
  .player-app-toolbar-dedicated .player-app-button span { display: none; }
  .close-player {
    grid-column: 2;
    grid-row: 1;
  }
  .player-info {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .player-stage {
    grid-column: 1 / -1;
    grid-row: 3;
  }
}