:root {
  --bg: #f4f6f9;
  --panel-bg: #ffffff;
  --line: #dfe3ea;
  --text: #202530;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-d: #1d4ed8;
  --accent: #0f172a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* 录入面板 */
.panel {
  width: 360px;
  flex: 0 0 360px;
  background: var(--panel-bg);
  border-right: 1px solid var(--line);
  padding: 16px 18px;
  overflow-y: auto;
  height: 100vh;
  position: sticky;
  top: 0;
}

.panel h1 {
  font-size: 18px;
  margin: 0 0 14px;
}

.group { margin-bottom: 18px; }

.group h2 {
  font-size: 14px;
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  color: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 3px;
}

label input,
label select,
textarea {
  font: inherit;
  font-size: 13px;
  color: var(--text);
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  width: 100%;
}

textarea {
  width: 100%;
  resize: vertical;
  font-family: ui-monospace, Consolas, monospace;
}

.hint { font-size: 11px; color: var(--muted); margin: 0 0 6px; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  position: sticky;
  bottom: 0;
  background: var(--panel-bg);
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

button {
  font: inherit;
  font-size: 13px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
button.primary:hover { background: var(--primary-d); }

/* 预览区 */
.preview {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
}

.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 15px;
  /* 不再用 height:100% 避免撑出多余空间 */
  min-height: 200px;
}

.report {
  max-width: 900px;
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px 32px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  /* 从顶部开始，不留上方空白 */
  margin-top: 0;
  /* flex 纵向布局下，用 align-self 实现水平居中 */
  align-self: center;
}

.report-head .title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

table.meta {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
table.meta td {
  border: 1px solid var(--line);
  padding: 5px 8px;
  width: 33.33%;
}

.section-title {
  font-size: 15px;
  font-weight: 700;
  margin: 22px 0 10px;
  padding-left: 8px;
  border-left: 4px solid var(--primary);
}

.trace {
  width: 100%;
  height: 280px;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 14px;
  margin: 16px 0;
  font-size: 13px;
}
.summary .box {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
}
.summary .box h4 { margin: 0 0 6px; font-size: 12px; color: var(--muted); }
.summary .box .row { display: flex; justify-content: space-between; }

table.events {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
table.events th,
table.events td {
  border: 1px solid var(--line);
  padding: 4px 5px;
  text-align: center;
}
table.events thead { background: #eef2f7; }

.remark-box {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
}

/* 打印 */
@media print {
  .panel { display: none; }
  .preview { padding: 0; overflow: visible; }
  .report { border: none; box-shadow: none; max-width: none; padding: 0; }
  @page { size: A4; margin: 12mm; }
}