/* sshare 공통 스타일 (다크 톤) */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0a0a0a;
  --card: #1a1a1a;
  --card-2: #111;
  --border: #2a2a2a;
  --text: #fff;
  --subtle: #888;
  --hint: #666;
  --danger: #cc2e2e;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

/* ---- Header ---- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
header h1 {
  font-size: 15px;
  font-weight: 600;
}
header .controls {
  display: flex;
  align-items: center;
  gap: 12px;
}
header .controls #peer-count {
  color: var(--subtle);
  font-size: 12px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
header button {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 16px;
}
header button:hover { background: #222; }
header button:active { transform: scale(0.96); }

/* ---- Layout (test page) ---- */
#layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 8px;
  padding: 8px;
  align-items: start;
}
#tree-col {
  position: sticky;
  top: 8px;
  display: flex;
  flex-direction: column;
}
#tree-col .pane {
  height: calc(100vh - 70px); /* viewport - header - padding */
}

/* ---- Grid (peer panes) ---- */
#grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ---- Pane base ---- */
.pane {
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  overflow: hidden;
}
.pane-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
}
.pane-header .title {
  flex: 1;
  font-weight: 700;
  font-size: 13px;
}

/* ---- Tree view ---- */
.tree-view {
  grid-column: span 1;
}
.tree-view .tree-count {
  color: var(--subtle);
  font-size: 11px;
}
.tree-view .tree-nodes {
  flex: 1;
  padding: 6px 4px 6px 8px;
  overflow: auto;
}
.tree-node {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px;
  color: #ccc;
  line-height: 1.5;
  padding: 1px 4px;
  border-radius: 4px;
}
.tree-node:hover {
  background: rgba(255, 255, 255, 0.04);
}
.tree-node:hover .tree-x {
  opacity: 1;
}
.tree-line {
  flex: 1;
  white-space: pre;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tree-prefix {
  color: #555;
}
.tree-name {
  color: #fff;
}
.tree-status {
  color: var(--subtle);
  font-size: 10px;
}
.tree-tv {
  display: inline-block;
  font-size: 10px;
  background: #6b3aa0;
  border-radius: 3px;
  padding: 0 4px;
  vertical-align: middle;
}
.tree-x {
  background: transparent;
  border: none;
  color: var(--hint);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 3px;
  opacity: 0.25;
  transition: opacity 0.1s, background 0.1s, color 0.1s;
  font-family: inherit;
  flex-shrink: 0;
}
.tree-x:hover {
  background: var(--danger);
  color: #fff;
  opacity: 1 !important;
}
.tree-empty {
  padding: 10px 12px;
  color: var(--hint);
  font-size: 11px;
}
.tree-view .legend {
  padding: 6px 12px 10px;
  color: var(--hint);
  font-size: 10px;
  border-top: 1px solid var(--border);
}

/* ---- Peer pane ---- */
.peer-pane .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #444;
  flex-shrink: 0;
}
.peer-pane .dot.on { background: #22cc88; }

.peer-pane .btn {
  background: #222;
  color: var(--text);
  border: none;
  border-radius: 6px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
}
.peer-pane .btn:hover { background: #2a2a2a; }
.peer-pane .btn.danger { background: var(--danger); }
.peer-pane .btn.danger:hover { background: #b62828; }
.peer-pane .btn-presenter {
  font-size: 12px;
  padding: 4px 6px;
  filter: grayscale(1);
  opacity: 0.55;
}
.peer-pane .btn-presenter:hover { filter: grayscale(0.3); opacity: 0.85; }
.peer-pane .btn-presenter.active {
  background: #6b3aa0;
  filter: none;
  opacity: 1;
}
.peer-pane .btn-presenter.active:hover { background: #7d4abf; }
.peer-pane .btn-leave {
  font-size: 13px;
  padding: 4px 8px;
}

.peer-pane .video-wrap {
  flex: 1;
  margin: 0 8px;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.peer-pane video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.peer-pane .empty {
  color: #555;
  font-size: 11px;
}

.peer-pane .footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 2px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px;
}
.peer-pane .role {
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.peer-pane .role-root { background: #1e40af; color: #bfdbfe; }
.peer-pane .role-branch { background: #7c5e1a; color: #fcd34d; }
.peer-pane .role-leaf { background: #2e3a2e; color: #86efac; }
.peer-pane .status {
  flex: 1;
  color: var(--subtle);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.peer-pane .pc-counts {
  color: #aaa;
  font-weight: 600;
}
.peer-pane .stats {
  padding: 0 12px 8px;
  color: var(--hint);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 10px;
}