:root {
  --bg: #0e1117;
  --panel: #161b24;
  --panel-2: #1d2431;
  --line: #2a3342;
  --text: #e6edf3;
  --muted: #8b98a9;
  --accent: #6d8bff;
  --accent-2: #59e6c3;
  --danger: #ff6b6b;
  --good: #37d67a;
  --warn: #ffb020;
  --bad: #ff6b6b;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

.app {
  display: grid;
  grid-template-columns: 340px 1fr;
  grid-template-rows: 1fr auto;
  grid-template-areas:
    "sidebar board"
    "sidebar toolbar";
  height: 100vh;
}

/* ---------- 左侧栏 ---------- */
.sidebar {
  grid-area: sidebar;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #0b1020;
  letter-spacing: 0.5px;
}
.brand-text h1 { font-size: 16px; margin: 0; }
.brand-text p { font-size: 12px; margin: 2px 0 0; color: var(--muted); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12px; color: var(--muted); }
.field label .hint-sm { color: #5c6b7e; margin-left: 4px; font-size: 11px; }
.field-inline { flex-direction: row; gap: 12px; }
.field-inline > div { flex: 1; display: flex; flex-direction: column; gap: 6px; }

textarea, select, input[type="text"] {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}
textarea:focus, select:focus, input[type="text"]:focus { border-color: var(--accent); }

.dims { display: flex; flex-wrap: wrap; gap: 8px; }
.dim-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s;
}
.dim-chip.on {
  border-color: var(--accent);
  background: rgba(109, 139, 255, 0.14);
  color: #cdd8ff;
}

.btn-primary {
  margin-top: 4px;
  background: linear-gradient(135deg, var(--accent), #7a63ff);
  border: none;
  color: white;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--shadow);
  transition: transform 0.1s, opacity 0.2s;
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.55; cursor: progress; transform: none; }
.spark { animation: spin 4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.agent-log {
  margin-top: auto;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--muted);
  min-height: 60px;
  max-height: 160px;
  overflow-y: auto;
  line-height: 1.7;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.agent-log .ok { color: var(--accent-2); }
.agent-log .step { color: var(--text); }

/* ---------- 画板 ---------- */
.board {
  grid-area: board;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 1px 1px, #222b3a 1px, transparent 0);
  background-size: 26px 26px;
  cursor: grab;
}
.board.panning { cursor: grabbing; }

.viewport {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  width: 100%;
  height: 100%;
  will-change: transform;
  backface-visibility: hidden;
}
/* 按钮缩放 / 适应画板时的缓动过渡（拖拽平移期间不加该类，保持即时跟手） */
.viewport.animating {
  transition: transform 0.38s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.edges {
  position: absolute;
  top: 0;
  left: 0;
  width: 4000px;
  height: 4000px;
  overflow: visible;
  pointer-events: none;
}
.edges path {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 6 6;
  opacity: 0.9;
}

.nodes { position: absolute; top: 0; left: 0; }

.board-hint {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  font-size: 12px;
  color: var(--muted);
  background: rgba(14, 17, 23, 0.7);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  pointer-events: none;
}

/* ---------- 卡片 ---------- */
.card {
  position: absolute;
  top: 0;
  left: 0;
  width: 248px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
  will-change: transform;
  /* 位置由 JS 通过 transform 设置；此处仅过渡阴影，拖拽时不影响位移 */
  transition: box-shadow 0.18s ease;
}
/* 登场：JS 加类，过渡 transform + opacity 到位，结束后移除以保证拖拽零延迟 */
.card.entering {
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.28s ease;
}
/* 拖拽中：轻微浮起，强化跟手反馈 */
.card.dragging {
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.5);
  cursor: grabbing;
}
.card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  cursor: grab;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.card-head:active { cursor: grabbing; }
.card-icon { font-size: 15px; }
.card-title { font-size: 13px; font-weight: 600; flex: 1; }
.card-score {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
}
.card-body { padding: 12px; font-size: 12px; color: var(--muted); line-height: 1.7; }
.card-body ul { margin: 6px 0 0; padding-left: 18px; }
.card-body li { margin: 2px 0; }

.bar {
  height: 6px;
  border-radius: 999px;
  background: var(--panel-2);
  overflow: hidden;
  margin: 8px 0 4px;
}
.bar > span { display: block; height: 100%; border-radius: 999px; }

/* 宽卡片（机会/改进/挑战） */
.card.wide { width: 300px; }

/* 富列表 */
.card-body ol.rich { margin: 4px 0 0; padding-left: 20px; }
.card-body ol.rich li { margin: 5px 0; color: var(--text); }
.card-body ol.improve li { margin: 9px 0; }
.card-body ol.improve b { font-weight: 600; }
.card-body .why {
  display: block;
  color: var(--muted);
  font-size: 11.5px;
  margin-top: 2px;
  line-height: 1.6;
}
.challenge-q { color: var(--warn); font-weight: 600; margin-bottom: 8px; }
.challenge-a { color: var(--text); }
.challenge-a b { color: var(--accent-2); }

/* 中心节点 */
.card.central {
  width: 280px;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
}
.card.central .card-head {
  background: linear-gradient(135deg, rgba(109, 139, 255, 0.25), rgba(89, 230, 195, 0.15));
}

/* 报告节点 */
.card.report { width: 300px; border-color: var(--accent-2); }
.card.report .card-head { background: linear-gradient(135deg, rgba(89, 230, 195, 0.22), transparent); }
.verdict {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}
.grade-badge {
  display: inline-block;
  font-weight: 800;
  padding: 1px 8px;
  border-radius: 8px;
  margin-left: 6px;
}

.s-good { color: var(--good); }
.s-warn { color: var(--warn); }
.s-bad { color: var(--bad); }
.bg-good { background: rgba(55, 214, 122, 0.16); color: var(--good); }
.bg-warn { background: rgba(255, 176, 32, 0.16); color: var(--warn); }
.bg-bad { background: rgba(255, 107, 107, 0.16); color: var(--bad); }

/* ---------- 底部工具栏 ---------- */
.toolbar {
  grid-area: toolbar;
  height: 52px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px;
}
.tool-group { display: flex; align-items: center; gap: 8px; }
.tool-sep { width: 1px; height: 24px; background: var(--line); }
.tool {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.12s;
}
.tool:hover { border-color: var(--accent); }
.tool.danger:hover { border-color: var(--danger); color: var(--danger); }
.zoom-label { font-size: 12px; color: var(--muted); width: 44px; text-align: center; }

.score-chip {
  font-size: 13px;
  color: var(--muted);
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
}
.score-chip strong { color: var(--accent-2); font-size: 15px; margin: 0 2px; }
.score-chip .grade { font-weight: 800; }