/* ============================================================
 * HT Editor Prototype — Design Contract (tech-dark)
 * 合并 2D/3D 拓扑编辑器 · 共享样式
 * ============================================================ */

:root {
  /* ---- Design Tokens ---- */
  --bg-app: #1b1b26;
  --bg-panel: #23232f;
  --bg-panel-2: #2a2a38;
  --bg-elevated: #313142;
  --bg-canvas: #14141d;
  --bg-input: #1a1a24;

  --border: #383848;
  --border-strong: #4a4a5e;
  --border-focus: #4f8cff;

  --text: #e4e4ec;
  --text-dim: #9a9aac;
  --text-mute: #6b6b7d;
  --text-inv: #1b1b26;

  --primary: #4f8cff;
  --primary-hover: #6ba0ff;
  --primary-soft: rgba(79, 140, 255, 0.14);
  --accent: #7c6cff;
  --success: #2ecc71;
  --warning: #f5a623;
  --danger: #ff5c5c;

  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 10px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.35);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.5);

  --font: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, monospace;

  /* layout */
  --menu-h: 32px;
  --toolbar-h: 44px;
  --status-h: 26px;
  --left-w: 232px;
  --right-w: 288px;
  --bottom-h: 196px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg-app);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

/* ---- Scrollbars ---- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #5a5a70; }

/* ============================================================
 *  App Shell
 * ============================================================ */
.app {
  display: grid;
  grid-template-rows: var(--menu-h) var(--toolbar-h) 1fr var(--status-h);
  height: 100vh;
}
.main-row {
  display: grid;
  grid-template-columns: var(--left-w) 1fr var(--right-w);
  overflow: hidden;
  min-height: 0;
}
/* with bottom panel */
.main-row.has-bottom {
  grid-template-rows: 1fr var(--bottom-h);
}
.main-inner {
  display: contents;
}
.canvas-area {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--bg-canvas);
  position: relative;
}
.bottom-area {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  background: var(--bg-panel);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* ============================================================
 *  Menu Bar
 * ============================================================ */
.menubar {
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
  gap: 2px;
  height: var(--menu-h);
}
.menu-item {
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.menu-item:hover { background: var(--bg-elevated); }
.menu-item.active { background: var(--primary-soft); color: var(--primary); }
.menu-spacer { flex: 1; }
.menu-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
  font-weight: 600;
  color: var(--primary);
}
.menu-brand .logo {
  width: 18px; height: 18px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 4px;
  display: grid; place-items: center;
  color: #fff; font-size: 11px; font-weight: 700;
}
.menu-title { color: var(--text-dim); font-weight: 400; }
.menu-user {
  display: flex; align-items: center; gap: 8px;
  padding-left: 10px; border-left: 1px solid var(--border);
}
.avatar {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, #7c6cff, #4f8cff);
  display: grid; place-items: center; font-size: 11px; color: #fff;
}

/* dropdown */
.dropdown {
  position: absolute;
  top: var(--menu-h);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  min-width: 200px;
  z-index: 200;
  display: none;
}
.menu-item.open .dropdown { display: block; }
.dropdown-item {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.dropdown-item:hover { background: var(--primary-soft); color: var(--primary); }
.dropdown-item .shortcut { color: var(--text-mute); font-size: 11px; }
.dropdown-sep { height: 1px; background: var(--border); margin: 4px 0; }

/* ============================================================
 *  Toolbar
 * ============================================================ */
.toolbar {
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
  gap: 2px;
  height: var(--toolbar-h);
  overflow-x: auto;
}
.tb-group {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 6px;
  border-right: 1px solid var(--border);
}
.tb-group:last-child { border-right: none; }
.tb-btn {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-dim);
  position: relative;
}
.tb-btn:hover { background: var(--bg-elevated); color: var(--text); }
.tb-btn.active { background: var(--primary-soft); color: var(--primary); }
.tb-btn svg { width: 16px; height: 16px; }
.tb-sep { width: 1px; height: 20px; background: var(--border); margin: 0 2px; }
.tb-label { font-size: 12px; color: var(--text-dim); padding: 0 4px; }
.tb-mode-switch {
  display: flex;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px;
  margin-left: 4px;
}
.tb-mode-switch .mode-btn {
  padding: 4px 14px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-dim);
}
.tb-mode-switch .mode-btn.active {
  background: var(--primary);
  color: #fff;
}
.tb-mode-switch .mode-btn:hover:not(.active) { color: var(--text); }

/* tooltip */
.tb-btn::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  z-index: 300;
}
.tb-btn:hover::after { opacity: 1; }

/* ============================================================
 *  Panel (left / right shared)
 * ============================================================ */
.panel {
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.panel.right { border-right: none; border-left: 1px solid var(--border); }
.panel-head {
  display: flex;
  align-items: center;
  padding: 0 12px;
  height: 36px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .5px;
  gap: 8px;
}
.panel-head .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--primary);
}
.panel-head .head-actions { margin-left: auto; display: flex; gap: 4px; }
.panel-head .icon-btn {
  width: 22px; height: 22px; display: grid; place-items: center;
  border-radius: 4px; cursor: pointer; color: var(--text-mute);
}
.panel-head .icon-btn:hover { background: var(--bg-elevated); color: var(--text); }

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

/* tabs inside panel */
.ptabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
}
.ptab {
  padding: 8px 14px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.ptab.active { color: var(--primary); border-bottom-color: var(--primary); }
.ptab:hover:not(.active) { color: var(--text); }

/* ============================================================
 *  Palette (left component library)
 * ============================================================ */
.palette-search {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
.palette-search input {
  width: 100%;
  height: 28px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0 8px 0 28px;
  font-size: 12px;
  outline: none;
}
.palette-search input:focus { border-color: var(--primary); }
.palette-search { position: relative; }
.palette-search::before {
  content: "⌕";
  position: absolute;
  left: 16px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-mute);
  font-size: 14px;
}

.palette-mode {
  display: flex;
  padding: 4px 8px;
  gap: 4px;
  border-bottom: 1px solid var(--border);
}
.palette-mode .chip {
  flex: 1;
  text-align: center;
  padding: 5px;
  font-size: 11px;
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-dim);
}
.palette-mode .chip.active { background: var(--primary-soft); color: var(--primary); }

.pal-group { margin-bottom: 4px; }
.pal-group-head {
  display: flex;
  align-items: center;
  padding: 6px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  gap: 6px;
}
.pal-group-head .chev {
  width: 12px; height: 12px;
  transition: transform .15s;
  color: var(--text-mute);
}
.pal-group.collapsed .chev { transform: rotate(-90deg); }
.pal-group.collapsed .pal-items { display: none; }
.pal-items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 0 6px 8px;
}
.pal-item {
  aspect-ratio: 1;
  background: var(--bg-elevated);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  cursor: grab;
  position: relative;
  transition: border-color .15s, background .15s;
}
.pal-item:hover { border-color: var(--primary); background: var(--primary-soft); }
.pal-item svg, .pal-item .icon { width: 22px; height: 22px; color: var(--text); }
.pal-item .lbl {
  position: absolute;
  bottom: 2px; left: 0; right: 0;
  text-align: center;
  font-size: 9px;
  color: var(--text-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 2px;
}

/* ============================================================
 *  Canvas / Viewport
 * ============================================================ */
.canvas-tabs {
  display: flex;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  height: 32px;
  flex-shrink: 0;
}
.canvas-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  font-size: 12px;
  color: var(--text-dim);
  cursor: pointer;
  border-right: 1px solid var(--border);
  position: relative;
}
.canvas-tab.active {
  background: var(--bg-canvas);
  color: var(--text);
}
.canvas-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
}
.canvas-tab .close {
  width: 14px; height: 14px;
  border-radius: 3px;
  display: grid; place-items: center;
  font-size: 14px;
  color: var(--text-mute);
}
.canvas-tab .close:hover { background: var(--danger); color: #fff; }
.canvas-tab .dirty { color: var(--warning); }

.canvas-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(var(--bg-canvas), var(--bg-canvas)),
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 100% 100%, 20px 20px;
}

/* 2D canvas mock */
.canvas-2d svg { width: 100%; height: 100%; display: block; }
.minimap {
  position: absolute;
  right: 12px; bottom: 12px;
  width: 140px; height: 100px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.minimap svg { width: 100%; height: 100%; }
.viewport-tool {
  position: absolute;
  right: 12px; top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.vp-btn {
  width: 30px; height: 30px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: grid; place-items: center;
  cursor: pointer;
  color: var(--text-dim);
}
.vp-btn:hover { color: var(--primary); border-color: var(--primary); }
.vp-btn svg { width: 14px; height: 14px; }

.coords-badge {
  position: absolute;
  left: 12px; bottom: 12px;
  background: rgba(0,0,0,.6);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
}

/* 3D canvas mock */
.canvas-3d {
  background: radial-gradient(ellipse at 50% 60%, #1e2235 0%, #0f1018 100%);
}
.canvas-3d .grid-floor {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,140,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,140,255,.08) 1px, transparent 1px);
  background-size: 40px 40px;
  transform: perspective(600px) rotateX(60deg);
  transform-origin: center bottom;
}
.axis-gizmo {
  position: absolute;
  left: 12px; top: 12px;
  width: 60px; height: 60px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* selection handles */
.sel-handle {
  position: absolute;
  width: 8px; height: 8px;
  background: #fff;
  border: 1.5px solid var(--primary);
  border-radius: 2px;
}

/* ============================================================
 *  Properties Panel (right)
 * ============================================================ */
.prop-section { margin-bottom: 10px; }
.prop-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 6px 10px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.prop-section-title .chev { color: var(--text-mute); }
.prop-group.collapsed .prop-fields { display: none; }
.prop-group.collapsed .chev { transform: rotate(-90deg); }
.prop-fields { padding: 2px 10px 6px; display: flex; flex-direction: column; gap: 6px; }

.field {
  display: grid;
  grid-template-columns: 70px 1fr;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}
.field label { color: var(--text-dim); }
.field input[type="text"],
.field input[type="number"],
.field select,
.field textarea {
  width: 100%;
  height: 26px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0 8px;
  font-size: 12px;
  outline: none;
  font-family: inherit;
}
.field input:focus, .field select:focus { border-color: var(--primary); }
.field textarea { height: auto; padding: 6px 8px; resize: vertical; }
.field-row { display: flex; gap: 4px; }
.field-row > * { flex: 1; }
.field-row .field { grid-template-columns: 1fr; }
.field-row .field label { font-size: 10px; margin-bottom: 2px; display: block; }

.color-field { display: flex; align-items: center; gap: 6px; }
.color-swatch {
  width: 22px; height: 22px;
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: pointer;
  flex-shrink: 0;
}
.color-field input[type="text"] { flex: 1; }

/* toggle / checkbox */
.toggle {
  width: 34px; height: 18px;
  background: var(--border);
  border-radius: 9px;
  position: relative;
  cursor: pointer;
  transition: background .15s;
}
.toggle.on { background: var(--primary); }
.toggle::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: #fff;
  border-radius: 50%;
  transition: left .15s;
}
.toggle.on::after { left: 18px; }

.checkbox {
  display: flex; align-items: center; gap: 6px;
  cursor: pointer;
}
.checkbox .box {
  width: 14px; height: 14px;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  display: grid; place-items: center;
  font-size: 10px;
  color: transparent;
}
.checkbox.on .box { background: var(--primary); border-color: var(--primary); color: #fff; }

/* slider field */
.slider-field {
  display: flex; align-items: center; gap: 8px;
}
.slider-field input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
}
.slider-field .val {
  width: 40px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--primary);
}

/* ============================================================
 *  Bottom Panel (DataModel / Layers / Console)
 * ============================================================ */
.bottom-tabs {
  display: flex;
  background: var(--bg-panel-2);
  border-bottom: 1px solid var(--border);
  height: 30px;
}
.bottom-tab {
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.bottom-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.bottom-content { flex: 1; overflow: auto; padding: 8px; }

/* tree */
.tree { font-size: 12px; }
.tree-node {
  padding: 3px 6px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  border-radius: 3px;
  white-space: nowrap;
}
.tree-node:hover { background: var(--bg-elevated); }
.tree-node.selected { background: var(--primary-soft); color: var(--primary); }
.tree-node .twisty {
  width: 12px; height: 12px;
  color: var(--text-mute);
  display: grid; place-items: center;
}
.tree-node .ico { width: 14px; height: 14px; color: var(--text-dim); }
.tree-node .badge {
  margin-left: auto;
  font-size: 10px;
  color: var(--text-mute);
  background: var(--bg-elevated);
  padding: 0 6px;
  border-radius: 8px;
}
.tree-children { padding-left: 16px; }
.tree-node.collapsed .tree-children { display: none; }
.tree-node.collapsed .twisty { transform: rotate(-90deg); }

/* layers */
.layer-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.layer-row:hover { background: var(--bg-elevated); }
.layer-row.active { background: var(--primary-soft); }
.layer-row .name { flex: 1; font-size: 12px; }
.layer-row .count { font-size: 11px; color: var(--text-mute); }
.layer-row .lv-ico { width: 14px; height: 14px; color: var(--text-dim); cursor: pointer; }
.layer-row .lv-ico.off { color: var(--text-mute); opacity: .4; }

/* console */
.console-line {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  display: flex;
  gap: 8px;
}
.console-line .time { color: var(--text-mute); }
.console-line.info .msg { color: var(--text); }
.console-line.warn .msg { color: var(--warning); }
.console-line.error .msg { color: var(--danger); }
.console-line.success .msg { color: var(--success); }

/* ============================================================
 *  Status Bar
 * ============================================================ */
.statusbar {
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  padding: 0 12px;
  height: var(--status-h);
  font-size: 11px;
  color: var(--text-dim);
  gap: 16px;
}
.statusbar .sep { width: 1px; height: 14px; background: var(--border); }
.statusbar .mode-tag {
  padding: 1px 8px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}
.statusbar .right { margin-left: auto; display: flex; gap: 16px; align-items: center; }

/* ============================================================
 *  Modal / Dialog
 * ============================================================ */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  display: grid; place-items: center;
  z-index: 1000;
}
.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 380px;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-head h3 { font-size: 14px; }
.modal-body { padding: 18px; overflow: auto; flex: 1; }
.modal-foot {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.btn {
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: var(--border-strong); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); }
.btn.ghost { background: transparent; }

/* ============================================================
 *  Page header (for standalone panel pages)
 * ============================================================ */
.page-banner {
  background: linear-gradient(135deg, #2a2a3a, #1e1e2a);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-banner h1 {
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-banner h1 .sub { font-size: 12px; color: var(--text-dim); font-weight: 400; }
.page-banner .crumb { font-size: 12px; color: var(--text-mute); }
.page-banner .crumb a { color: var(--primary); text-decoration: none; }
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  text-decoration: none;
  font-size: 13px;
}
.back-link:hover { text-decoration: underline; }

/* standalone panel view */
.standalone {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: calc(100vh - var(--menu-h) - var(--toolbar-h) - 60px);
  overflow: hidden;
}
.standalone .preview-side {
  background: var(--bg-canvas);
  border-right: 1px solid var(--border);
  display: grid;
  place-items: center;
  padding: 24px;
  position: relative;
}
.standalone .panel-side { overflow: auto; }

/* ============================================================
 *  Cards grid (overview/settings)
 * ============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
  padding: 18px;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--primary); transform: translateY(-2px); }
.card .card-ico {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  display: grid; place-items: center;
  margin-bottom: 12px;
}
.card h4 { font-size: 14px; margin-bottom: 4px; }
.card p { font-size: 12px; color: var(--text-dim); line-height: 1.5; }

/* settings */
.settings-wrap { padding: 24px; max-width: 860px; margin: 0 auto; }
.settings-group {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
}
.settings-group-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 13px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.settings-row:last-child { border-bottom: none; }
.settings-row .info h5 { font-size: 13px; margin-bottom: 2px; }
.settings-row .info p { font-size: 11px; color: var(--text-dim); }

/* ============================================================
 *  Utility
 * ============================================================ */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.muted { color: var(--text-mute); }
.dim { color: var(--text-dim); }
.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 600;
}
.tag.blue { background: var(--primary-soft); color: var(--primary); }
.tag.green { background: rgba(46,204,113,.15); color: var(--success); }
.tag.orange { background: rgba(245,166,35,.15); color: var(--warning); }
.tag.red { background: rgba(255,92,92,.15); color: var(--danger); }
hr.dashed { border: none; border-top: 1px dashed var(--border); margin: 10px 0; }

/* ============================================================
 *  Theme System — 6 themes via [data-theme]
 * ============================================================ */

/* 1. Dark (default) — already defined in :root */
[data-theme="dark"] {
  --bg-app: #1b1b26;
  --bg-panel: #23232f;
  --bg-panel-2: #2a2a38;
  --bg-elevated: #313142;
  --bg-canvas: #14141d;
  --bg-input: #1a1a24;
  --border: #383848;
  --border-strong: #4a4a5e;
  --border-focus: #4f8cff;
  --text: #e4e4ec;
  --text-dim: #9a9aac;
  --text-mute: #6b6b7d;
  --text-inv: #1b1b26;
  --primary: #4f8cff;
  --primary-hover: #6ba0ff;
  --primary-soft: rgba(79, 140, 255, 0.14);
  --accent: #7c6cff;
}

/* 2. Bilibili (B站风) — pink + blue */
[data-theme="bilibili"] {
  --bg-app: #f4f5f7;
  --bg-panel: #ffffff;
  --bg-panel-2: #f0f1f3;
  --bg-elevated: #f7f8fa;
  --bg-canvas: #eef0f3;
  --bg-input: #f4f5f7;
  --border: #e3e5e8;
  --border-strong: #c9cdd4;
  --border-focus: #fb7299;
  --text: #18191c;
  --text-dim: #61666d;
  --text-mute: #9499a0;
  --text-inv: #ffffff;
  --primary: #fb7299;
  --primary-hover: #ff8fb0;
  --primary-soft: rgba(251, 114, 153, 0.12);
  --accent: #00a1d6;
}

/* 3. Minimal White (极简白) */
[data-theme="white"] {
  --bg-app: #ffffff;
  --bg-panel: #ffffff;
  --bg-panel-2: #fafafa;
  --bg-elevated: #f5f5f5;
  --bg-canvas: #f8f8f8;
  --bg-input: #f5f5f5;
  --border: #eeeeee;
  --border-strong: #dddddd;
  --border-focus: #1677ff;
  --text: #222222;
  --text-dim: #666666;
  --text-mute: #aaaaaa;
  --text-inv: #ffffff;
  --primary: #1677ff;
  --primary-hover: #4096ff;
  --primary-soft: rgba(22, 119, 255, 0.10);
  --accent: #595959;
}

/* 4. Sakura (樱花风) */
[data-theme="sakura"] {
  --bg-app: #fff5f7;
  --bg-panel: #ffffff;
  --bg-panel-2: #fff0f3;
  --bg-elevated: #ffeef2;
  --bg-canvas: #fff8fa;
  --bg-input: #fff0f3;
  --border: #f3dce2;
  --border-strong: #e8c4cd;
  --border-focus: #ff7eb3;
  --text: #4a2c3a;
  --text-dim: #8a6577;
  --text-mute: #c1a0ad;
  --text-inv: #ffffff;
  --primary: #ff7eb3;
  --primary-hover: #ff9dc5;
  --primary-soft: rgba(255, 126, 179, 0.12);
  --accent: #b57edc;
}

/* 5. Forest Green (森野绿) */
[data-theme="forest"] {
  --bg-app: #1a2420;
  --bg-panel: #222e28;
  --bg-panel-2: #2a3830;
  --bg-elevated: #33443a;
  --bg-canvas: #121a16;
  --bg-input: #1c2821;
  --border: #3a4a40;
  --border-strong: #4d6053;
  --border-focus: #52b788;
  --text: #e0e8e2;
  --text-dim: #9aada0;
  --text-mute: #6b8073;
  --text-inv: #1a2420;
  --primary: #52b788;
  --primary-hover: #74c69d;
  --primary-soft: rgba(82, 183, 136, 0.14);
  --accent: #95d5b2;
}

/* 6. Ink Wash (烟雨水墨风) */
[data-theme="ink"] {
  --bg-app: #f2efe9;
  --bg-panel: #faf8f4;
  --bg-panel-2: #ece8e0;
  --bg-elevated: #e5e1d8;
  --bg-canvas: #f7f5f0;
  --bg-input: #ece8e0;
  --border: #d6d2c8;
  --border-strong: #b8b3a8;
  --border-focus: #4a4a4a;
  --text: #2b2b2b;
  --text-dim: #6b6b6b;
  --text-mute: #9a9a9a;
  --text-inv: #faf8f4;
  --primary: #4a4a4a;
  --primary-hover: #2b2b2b;
  --primary-soft: rgba(74, 74, 74, 0.10);
  --accent: #8b7355;
}

/* ---- Theme switcher UI ---- */
.theme-switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  color: var(--text-dim);
}
.theme-switch:hover { background: var(--bg-elevated); color: var(--text); }
.theme-switch .ts-ico { width: 14px; height: 14px; color: var(--primary); }
.theme-switch .ts-name { font-size: 12px; }
.theme-switch .ts-arrow { width: 10px; height: 10px; color: var(--text-mute); transition: transform .15s; }
.theme-switch.open .ts-arrow { transform: rotate(180deg); }

.theme-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  min-width: 180px;
  z-index: 300;
  display: none;
}
.theme-switch.open .theme-menu { display: block; }
.theme-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  color: var(--text);
}
.theme-menu-item:hover { background: var(--bg-elevated); }
.theme-menu-item.active { background: var(--primary-soft); color: var(--primary); }
.theme-menu-item .ts-swatch {
  width: 18px; height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid var(--border);
  display: flex;
  overflow: hidden;
}
.theme-menu-item .ts-swatch span { flex: 1; }
.theme-menu-item .ts-check { margin-left: auto; color: var(--primary); font-size: 12px; }