:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e3e5e8;
  --border-strong: #d0d3d8;
  --text: #1f2329;
  --muted: #8a8f99;
  --accent: #185FA5;
  --accent-soft: #E6F1FB;
  --danger: #A32D2D;
  --radius: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* ---------- 顶栏 ---------- */
.topbar {
  flex: none; display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand { font-size: 14px; font-weight: 500; letter-spacing: .2px; }
.plan-name {
  border: 1px solid transparent; background: transparent; font: inherit;
  font-weight: 500; padding: 4px 8px; border-radius: var(--radius); width: 180px;
}
.plan-name:hover { border-color: var(--border); }
.plan-name:focus { outline: none; border-color: var(--accent); background: #fff; }
.plan-select {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 4px 8px; font: inherit; background: #fff; max-width: 200px;
}
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.save-state { font-size: 12px; color: var(--muted); min-width: 56px; text-align: right; }

/* ---------- 通用控件 ---------- */
.btn {
  border: 1px solid var(--border-strong); background: #fff; color: var(--text);
  border-radius: var(--radius); padding: 5px 10px; font: inherit; font-size: 12px;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #14507f; color: #fff; }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.btn-icon { padding: 5px 9px; min-width: 30px; }
.btn-block { width: 100%; margin-top: 14px; padding: 8px; font-size: 13px; }
.muted { color: var(--muted); font-size: 12px; }
.hint { color: var(--muted); font-size: 11px; margin: 2px 0 10px; line-height: 1.45; }
.sep { width: 1px; height: 16px; background: var(--border); }
.text-input {
  width: 100%; border: 1px solid var(--border-strong); border-radius: var(--radius);
  padding: 5px 8px; font: inherit; font-size: 12px;
}
.text-input:focus { outline: none; border-color: var(--accent); }

/* ---------- 布局 ---------- */
.layout { flex: 1; display: grid; grid-template-columns: 268px minmax(0, 1fr) 252px; min-height: 0; }
.panel {
  background: var(--panel); display: flex; flex-direction: column;
  min-height: 0; overflow-y: auto; padding: 12px;
}
.panel-left { border-right: 1px solid var(--border); }
.panel-right { border-left: 1px solid var(--border); }
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; font-weight: 500; color: var(--text);
  padding: 6px 0 8px;
}
.panel-actions { display: flex; gap: 6px; margin-bottom: 10px; }
.panel-actions .btn { flex: 1; padding: 5px 4px; }

/* ---------- 名单 ---------- */
.roster-list { border-top: 1px solid var(--border); }
.roster-row {
  display: grid; grid-template-columns: 6px minmax(0, 1.1fr) minmax(0, .9fr) minmax(0, .9fr) 20px;
  gap: 4px; align-items: center; padding: 3px 0;
  border-bottom: 1px solid var(--border);
}
.roster-row .dot { width: 6px; height: 6px; border-radius: 50%; }
.roster-row input {
  border: 1px solid transparent; background: transparent; font: inherit; font-size: 12px;
  padding: 3px 4px; border-radius: 4px; width: 100%; min-width: 0;
}
.roster-row input:hover { border-color: var(--border); }
.roster-row input:focus { outline: none; border-color: var(--accent); background: #fff; }
.roster-row .del {
  border: none; background: none; color: var(--muted); cursor: pointer;
  font-size: 14px; line-height: 1; padding: 0 2px;
}
.roster-row .del:hover { color: var(--danger); }
.roster-row.locked-bg { background: #fbfbfc; }
.roster-empty { color: var(--muted); font-size: 12px; padding: 14px 4px; text-align: center; }

.setlist { margin-top: 14px; }
.pool-list { display: flex; flex-wrap: wrap; gap: 5px; }
.pool-chip {
  display: inline-flex; align-items: center; gap: 4px;
  border: 1px dashed var(--border-strong); border-radius: 20px;
  padding: 2px 8px; font-size: 12px; cursor: grab; background: #fff;
}
.pool-chip:hover { border-color: var(--accent); color: var(--accent); }
.pool-chip .seat-btn {
  border: none; background: none; color: var(--accent); cursor: pointer;
  font-size: 11px; padding: 0 0 0 3px;
}

/* ---------- 画布 ---------- */
.canvas-area { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.canvas-toolbar {
  flex: none; display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.canvas {
  flex: 1; overflow: auto; padding: 18px; min-height: 0;
  background: var(--bg);
  display: flex; align-items: flex-start; justify-content: center;
}
.canvas svg { background: #fff; border-radius: 10px; box-shadow: 0 1px 3px rgba(0,0,0,.05); touch-action: none; }
.canvas svg text { user-select: none; }
.seat-group { cursor: grab; }
.seat-group:active { cursor: grabbing; }
.seat-hover rect { stroke-width: 2px !important; }

.conflict-bar {
  flex: none; max-height: 118px; overflow-y: auto;
  background: var(--panel); border-top: 1px solid var(--border); padding: 8px 14px;
}
.conflict-item { display: flex; gap: 6px; align-items: flex-start; font-size: 12px; padding: 2px 0; }
.conflict-item.warn::before { content: "·"; color: #BA7517; font-weight: 700; }
.conflict-item.error::before { content: "!"; color: var(--danger); font-weight: 700; }
.conflict-ok { color: var(--muted); font-size: 12px; }

/* ---------- 右侧表单 ---------- */
.form-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin-bottom: 12px; }
.form-tabs .tab:last-child { grid-column: span 2; }
.tab {
  border: 1px solid var(--border-strong); background: #fff; border-radius: var(--radius);
  padding: 7px 4px; font: inherit; font-size: 12px; cursor: pointer;
}
.tab:hover { border-color: var(--accent); }
.tab.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 500; }

.param-block { display: flex; flex-direction: column; gap: 9px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.param-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.param-row label { font-size: 12px; color: var(--text); }
.param-row input[type="number"] {
  width: 62px; border: 1px solid var(--border-strong); border-radius: var(--radius);
  padding: 4px 6px; font: inherit; font-size: 12px; text-align: center;
}
.param-row input[type="number"]:focus { outline: none; border-color: var(--accent); }
.param-total { font-size: 12px; color: var(--accent); padding-top: 2px; }
.param-warn { font-size: 11px; color: var(--danger); }

.rule-block { padding-bottom: 6px; }
.rule-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 10px; }
.rule-label { font-size: 12px; }
.seg { display: flex; border: 1px solid var(--border-strong); border-radius: var(--radius); overflow: hidden; }
.seg-btn {
  border: none; background: #fff; padding: 4px 12px; font: inherit; font-size: 12px; cursor: pointer; color: var(--text);
}
.seg-btn + .seg-btn { border-left: 1px solid var(--border-strong); }
.seg-btn.active { background: var(--accent); color: #fff; }
.check-row { display: flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 12px; cursor: pointer; }
.check-row input { margin: 0; }

/* ---------- 领导席 ---------- */
.param-sep { height: 1px; background: var(--border); margin: 6px 0 10px; }
.btn-mini { padding: 3px 10px; font-size: 11px; }
.pick-list {
  border: 1px solid var(--border); border-radius: var(--radius);
  max-height: 46vh; overflow-y: auto; background: #fff;
}
.pick-row {
  display: flex; align-items: center; gap: 8px; padding: 6px 10px;
  font-size: 12px; cursor: pointer; border-bottom: 1px solid var(--border);
}
.pick-row:last-child { border-bottom: none; }
.pick-row:hover { background: #f7f9fb; }
.pick-row input { margin: 0; flex: none; }
.pick-name { min-width: 76px; }
.pick-org { color: var(--muted); flex: 1; }
.pick-tag {
  flex: none; font-size: 10px; padding: 1px 6px; border-radius: 8px;
  background: #FAEEDA; color: #854F0B; border: 1px solid #E8D3A6;
}

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(20, 22, 26, .38);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 24px;
}
.modal-mask.hidden { display: none; }
.modal {
  background: #fff; border-radius: 12px; width: 100%; max-width: 720px;
  max-height: 86vh; display: flex; flex-direction: column; overflow: hidden;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 500; font-size: 13px;
}
.modal-body { padding: 16px; overflow-y: auto; }
.modal-foot {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 12px 16px; border-top: 1px solid var(--border); background: #fafbfc;
}
.modal-body textarea {
  width: 100%; min-height: 150px; border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 8px 10px; font: inherit; font-size: 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace; resize: vertical;
}
.modal-body textarea:focus { outline: none; border-color: var(--accent); }
.preview-table { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 10px; }
.preview-table th, .preview-table td {
  border: 1px solid var(--border); padding: 4px 6px; text-align: left; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; max-width: 160px;
}
.preview-table th { background: #fafbfc; font-weight: 500; }
.preview-table select {
  border: 1px solid var(--border-strong); border-radius: 4px; font: inherit; font-size: 12px;
  padding: 2px 4px; width: 100%; background: #fff;
}
.import-split { display: flex; gap: 10px; margin-bottom: 12px; }
.file-note { font-size: 12px; color: var(--muted); }
.field-label { font-size: 12px; font-weight: 500; margin-bottom: 6px; display: block; }