* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }

:root {
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --radius: 14px;
  --radius-sm: 10px;
}

html[data-theme="light"] {
  --scene-bg: #f4f5fb;
  --grid-dot: rgba(30, 30, 70, 0.13);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-strong: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(255, 255, 255, 0.95);
  --stroke: rgba(20, 20, 40, 0.1);
  --text: #1b1b2b;
  --text-dim: #61617a;
  --hover: rgba(99, 102, 241, 0.1);
  --shadow: 0 8px 30px rgba(30, 30, 70, 0.13);
  --default-ink: #1b1b1f;
}

html[data-theme="dark"] {
  --scene-bg: #0d0d12;
  --grid-dot: rgba(255, 255, 255, 0.1);
  --glass: rgba(28, 28, 38, 0.72);
  --glass-strong: rgba(38, 38, 50, 0.88);
  --glass-border: rgba(255, 255, 255, 0.1);
  --stroke: rgba(255, 255, 255, 0.1);
  --text: #e8e8f0;
  --text-dim: #9a9ab0;
  --hover: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  --default-ink: #ececf2;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--scene-bg);
  color: var(--text);
  height: 100vh;
  position: relative;
  transition: background-color 0.35s, color 0.35s;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  touch-action: none;
}

.floating {
  position: fixed;
  z-index: 10;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(22px) saturate(1.4);
  -webkit-backdrop-filter: blur(22px) saturate(1.4);
  box-shadow: var(--shadow);
}

/* ---------------- Header ---------------- */
header.floating {
  top: 12px; left: 12px; right: 12px;
  height: 52px;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-radius: var(--radius);
}
.header-left { display: flex; align-items: center; gap: 0.8rem; }
.header-logo { height: 24px; }
.header-right { display: flex; gap: 0.5rem; align-items: center; }

.share-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.32rem 0.65rem;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--text-dim);
  font-family: 'SF Mono', ui-monospace, Menlo, monospace;
  font-size: 0.76rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s;
}
.share-btn:hover { color: var(--text); border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.share-btn.copied { color: #10b981; border-color: #10b981; }

.peers-strip {
  flex: 1 1 auto; display: flex; align-items: center; gap: 0.4rem;
  overflow-x: auto; min-width: 0; scrollbar-width: none;
}
.peers-strip::-webkit-scrollbar { display: none; }
.peer-pill {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.28rem 0.65rem;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  font-size: 0.74rem; color: var(--text); white-space: nowrap; flex-shrink: 0;
}
.peer-pill .peer-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--peer-color, #888); box-shadow: 0 0 8px var(--peer-color, #888); }
.peer-pill .peer-name { font-weight: 600; }
.peer-pill.self { cursor: pointer; border-color: var(--peer-color); }
.peer-pill .peer-rename {
  background: transparent; border: 1px dashed var(--stroke); border-radius: 5px;
  padding: 0.05rem 0.3rem; color: var(--text); font-family: inherit;
  font-size: 0.74rem; font-weight: 600; width: 8rem; outline: none;
}

.status-pill {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.32rem 0.65rem;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 999px; font-size: 0.72rem; color: var(--text-dim);
}
.status-pill .status-dot { width: 8px; height: 8px; border-radius: 50%; background: #f59e0b; box-shadow: 0 0 8px #f59e0b; }
.status-pill.online .status-dot { background: #10b981; box-shadow: 0 0 8px #10b981; }
.status-pill.offline .status-dot { background: #ef4444; box-shadow: 0 0 8px #ef4444; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 50%; color: var(--text); cursor: pointer; transition: all 0.15s;
}
.icon-btn:hover { box-shadow: 0 0 0 3px var(--accent-glow); border-color: var(--accent); }
.icon-btn.sm { width: 30px; height: 30px; }
.icon-btn:disabled { opacity: 0.32; cursor: default; box-shadow: none; border-color: var(--glass-border); pointer-events: none; }
.hist-group { display: flex; align-items: center; gap: 0.3rem; }
html[data-theme="light"] .icon-moon { display: none; }
html[data-theme="dark"] .icon-sun { display: none; }

/* ---------------- Toolbar ---------------- */
.toolbar.floating {
  bottom: 16px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 0.25rem;
  padding: 0.4rem; border-radius: var(--radius);
}
.tool {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid transparent;
  border-radius: var(--radius-sm); color: var(--text-dim);
  cursor: pointer; transition: all 0.12s;
}
.tool:hover { background: var(--hover); color: var(--text); }
.tool.active { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 4px 12px var(--accent-glow); }
.tool-sep { width: 1px; height: 26px; background: var(--stroke); margin: 0 0.2rem; }
.tool-sep.vert { height: 22px; }

/* ---------------- Properties panel ---------------- */
.props.floating {
  top: 76px; left: 12px;
  width: 188px;
  padding: 0.85rem;
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 0.85rem;
}
.prop-row { display: flex; flex-direction: column; gap: 0.45rem; }
.prop-label { font-size: 0.66rem; font-weight: 700; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.dot-row { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.dot {
  width: 22px; height: 22px; border-radius: 7px;
  border: 1px solid var(--stroke); cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s; position: relative;
}
.dot:hover { transform: scale(1.12); }
.dot.active { box-shadow: 0 0 0 2px var(--scene-bg), 0 0 0 4px var(--accent); }
.dot.transparent {
  background:
    linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%) 0 0/10px 10px,
    linear-gradient(45deg, #ccc 25%, #fff 25%, #fff 75%, #ccc 75%) 5px 5px/10px 10px;
}
#width-val { color: var(--accent); }
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; background: var(--stroke);
  border-radius: 4px; outline: none; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); border: 2px solid #fff;
  box-shadow: 0 2px 8px var(--accent-glow); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid #fff; cursor: pointer;
}
.width-preview-wrap { display: flex; align-items: center; justify-content: center; height: 46px; }
.width-preview { display: block; border-radius: 50%; background: var(--text); }

/* ---------------- Zoom widget ---------------- */
.zoombar.floating {
  bottom: 16px; left: 12px;
  display: flex; align-items: center; gap: 0.15rem;
  padding: 0.25rem; border-radius: var(--radius-sm);
}
.zoombar button {
  min-width: 32px; height: 32px; padding: 0 0.5rem;
  background: transparent; border: none; border-radius: 8px;
  color: var(--text); font-family: inherit; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.12s;
}
.zoombar button:hover { background: var(--hover); }
#zoom-reset { font-size: 0.74rem; min-width: 52px; font-variant-numeric: tabular-nums; }

/* ---------------- Selection actions ---------------- */
.sel-actions.floating {
  bottom: 16px; right: 12px;
  display: flex; align-items: center; gap: 0.25rem;
  padding: 0.3rem; border-radius: var(--radius-sm);
}
.sel-actions button {
  height: 34px; min-width: 34px; padding: 0 0.6rem;
  background: transparent; border: none; border-radius: 8px;
  color: var(--text); font-family: inherit; font-size: 0.8rem; font-weight: 600;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.12s;
}
.sel-actions button:hover { background: var(--hover); }
.sel-actions button.danger:hover { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

/* ---------------- Floating text editor ---------------- */
.text-input {
  position: fixed; z-index: 50;
  background: transparent; border: none; outline: none; resize: none; overflow: hidden;
  padding: 0; margin: 0; line-height: 1.25;
  font-family: 'Inter', sans-serif; white-space: pre;
  color: var(--default-ink);
}

.hidden { display: none !important; }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; bottom: 64px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--glass-strong); border: 1px solid var(--glass-border);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  padding: 0.55rem 1.05rem; border-radius: 999px;
  font-size: 0.82rem; font-weight: 500; color: var(--text);
  box-shadow: var(--shadow); opacity: 0; pointer-events: none;
  transition: opacity 0.25s, transform 0.25s; z-index: 1000;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 720px) {
  .props.floating { width: 150px; }
  .peers-strip { display: none; }
}