/* 高考长期规划与自适应学习计划系统 V1.0
   界面原则（设计文档 4 章）：清晰、克制的管理型布局；同类页面沿用统一操作方式；
   桌面优先；长表单分区展示；危险操作要显式区分。 */

:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e3e6ea;
  --border-strong: #ccd2d9;
  --text: #1f2329;
  --text-soft: #5b6472;
  --text-mute: #8b939f;
  --primary: #2f5fd0;
  --primary-soft: #eaf0fd;
  --success: #2e7d55;
  --success-soft: #e9f5ee;
  --warn: #9a6b00;
  --warn-soft: #fdf3dd;
  --danger: #b03030;
  --danger-soft: #fdecec;
  --info-soft: #eef2f7;
  --radius: 8px;
  --radius-sm: 5px;
  --mono: "Cascadia Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.65;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

/* ---------------- 顶栏 ---------------- */
.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; }
.brand-text small { color: var(--text-mute); font-size: 11.5px; }

.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-soft);
  font-size: 13.5px;
}
.nav a:hover { background: var(--info-soft); text-decoration: none; }
.nav a.on { background: var(--primary-soft); color: var(--primary); font-weight: 600; }

.topbar-actions { margin-left: auto; display: flex; gap: 8px; }

/* ---------------- 通用 ---------------- */
main { padding: 22px 20px 40px; }

.page-head {
  display: flex; align-items: flex-end; gap: 16px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.page-head h1 { margin: 0; font-size: 21px; }
.page-head .sub { color: var(--text-mute); font-size: 13px; }
.page-head .grow { flex: 1; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card > h2, .card > h3 { margin-top: 0; }
.card h2 { font-size: 16px; margin-bottom: 12px; }
.card h3 { font-size: 14.5px; margin-bottom: 10px; }
.card .hint { color: var(--text-mute); font-size: 12.5px; margin-top: -6px; margin-bottom: 12px; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .topbar-inner { flex-wrap: wrap; height: auto; padding: 10px 0; }
  .nav { flex-wrap: wrap; }
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font-size: 13.5px;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.4;
}
.btn:hover { background: var(--info-soft); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #2450b8; }
.btn-danger { background: #fff; border-color: #e0b4b4; color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-soft); }
.btn-ghost:hover { background: var(--info-soft); }
.btn-sm { padding: 4px 10px; font-size: 12.5px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ---------------- 表格 ---------------- */
.table-scroll { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  font-size: 13.5px;
}
table.data th, table.data td {
  border-bottom: 1px solid var(--border);
  padding: 9px 10px;
  text-align: left;
  vertical-align: top;
}
table.data th {
  background: #fafbfc;
  color: var(--text-soft);
  font-weight: 600;
  white-space: nowrap;
}
table.data tr:hover td { background: #fbfcfd; }
table.data td.num, table.data th.num { text-align: right; white-space: nowrap; }
table.data td.actions { white-space: nowrap; }

/* ---------------- 徽标 ---------------- */
.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 12px;
  background: var(--info-soft);
  color: var(--text-soft);
  white-space: nowrap;
}
.badge-primary { background: var(--primary-soft); color: var(--primary); }
.badge-success { background: var(--success-soft); color: var(--success); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-danger { background: var(--danger-soft); color: var(--danger); }
.badge-mute { background: #f0f2f5; color: var(--text-mute); }

/* ---------------- 提示条 ---------------- */
.flashes { margin-bottom: 16px; }
.flash {
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 8px;
  background: var(--panel);
}
.flash-success { border-left-color: var(--success); background: var(--success-soft); }
.flash-error { border-left-color: var(--danger); background: var(--danger-soft); }
.flash-warning { border-left-color: var(--warn); background: var(--warn-soft); }
.flash-info { border-left-color: var(--primary); background: var(--primary-soft); }

.notice {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  background: var(--info-soft);
  color: var(--text-soft);
  font-size: 13px;
}
.notice.warn { background: var(--warn-soft); border-color: #eddcb4; color: #6b4c00; }
.notice.danger { background: var(--danger-soft); border-color: #ecc6c6; color: #7a2222; }
.notice strong { color: inherit; }

/* ---------------- 表单 ---------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 900px) { .form-grid { grid-template-columns: 1fr; } }

.field label { display: block; font-size: 13px; color: var(--text-soft); margin-bottom: 5px; }
.field .req { color: var(--danger); margin-left: 3px; }

/* 行内确认框（勾选"我已了解…"这类） */
.inline-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 10px;
}
.field .desc { font-size: 12px; color: var(--text-mute); margin-top: 4px; }

input[type=text], input[type=number], input[type=date], input[type=search],
input[type=file], select, textarea {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13.5px;
  color: var(--text);
  background: #fff;
}
textarea { min-height: 84px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-soft);
}

.filters {
  display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: flex-end;
}
.filters .field { min-width: 150px; }
.filters .field.wide { min-width: 240px; flex: 1; }

/* ---------------- 键值展示 ---------------- */
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 7px 14px; font-size: 13.5px; }
.kv dt { color: var(--text-mute); }
.kv dd { margin: 0; word-break: break-all; }
@media (max-width: 700px) { .kv { grid-template-columns: 1fr; } .kv dt { margin-top: 6px; } }

.mono { font-family: var(--mono); font-size: 12.5px; word-break: break-all; }
.muted { color: var(--text-mute); }
.small { font-size: 12.5px; }
.nowrap { white-space: nowrap; }

/* ---------------- 统计块 ---------------- */
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat .label { color: var(--text-mute); font-size: 12.5px; }
.stat .value { font-size: 22px; font-weight: 700; margin-top: 2px; }
.stat .sub { color: var(--text-mute); font-size: 12px; }

/* ---------------- 预览区 ---------------- */
.preview-frame {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 22px 26px;
}
.preview-frame iframe { width: 100%; height: 78vh; border: 0; }
.preview-text {
  font-family: var(--mono);
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}
.preview-frame img { max-width: 100%; height: auto; }
.preview-frame table { border-collapse: collapse; }
.preview-frame td, .preview-frame th {
  border: 1px solid var(--border);
  padding: 5px 9px;
}
.preview-frame h1 { font-size: 21px; }
.preview-frame h2 { font-size: 18px; }
.preview-frame h3 { font-size: 16px; }

/* ---------------- 未实现功能清单 ---------------- */
.pending-list { list-style: none; padding: 0; margin: 0; }
.pending-list li {
  display: flex; gap: 12px; align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border);
}
.pending-list li:last-child { border-bottom: 0; }
.pending-list .name { font-weight: 600; min-width: 132px; }
.pending-list .desc { color: var(--text-soft); font-size: 13px; }

/* ---------------- 页脚 ---------------- */
.footer {
  padding: 18px 20px 30px;
  color: var(--text-mute);
  font-size: 12.5px;
  border-top: 1px solid var(--border);
  margin-top: 10px;
}
.footer .sep { margin: 0 8px; }

/* ---------------- 危险区 ---------------- */
.danger-zone {
  border: 1px solid #ecc6c6;
  background: var(--danger-soft);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.danger-zone h3 { margin: 0 0 6px; color: #7a2222; font-size: 14px; }
.danger-zone p { margin: 0 0 10px; color: #7a2222; font-size: 12.5px; }

details.inline-form summary { cursor: pointer; color: var(--primary); font-size: 13px; }
details.inline-form[open] summary { margin-bottom: 10px; }

.sep-line { height: 1px; background: var(--border); margin: 18px 0; border: 0; }

/* ==================================================================
   Phase 2 —— 结构化目标与计划管理
   新增：导航换行（入口变多）、时间线、拖动列表、折叠面板、面包屑、tab
   ================================================================== */

/* ---------------- 导航换行（入口多于一行时） ---------------- */
.nav-wrap {
  display: flex; flex-wrap: wrap; gap: 4px 2px;
  margin-left: 8px;
}
.nav-wrap .nav { margin-left: 0; flex-wrap: wrap; }

/* ---------------- 通用小件 ---------------- */
.plain-list { list-style: none; padding: 0; margin: 0; }
.plain-list li { padding: 3px 0; }
.req { color: var(--danger); margin-left: 2px; }
.span-2 { grid-column: 1 / -1; }
.section-title {
  margin: 22px 0 10px;
  font-size: 14.5px; font-weight: 700;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.section-title:first-child { margin-top: 0; }

.card-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 12px;
}
.card-head h2, .card-head h3 { margin: 0; }

.inline-form { display: inline; }
.inline-input { display: inline-block; width: auto; margin-right: 6px; }

.row-deleted td { color: var(--text-mute); text-decoration: line-through; }
.tree-indent-1 { padding-left: 18px; }
.tree-indent-2 { padding-left: 36px; }

.checkbox-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  background: var(--panel);
  max-height: 320px; overflow-y: auto;
}
.checkbox-item {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 13px; line-height: 1.5;
}
.checkbox-item input[type="checkbox"] { margin-top: 3px; flex: none; }
.checkbox-item .meta { color: var(--text-mute); font-size: 12px; }

/* ---------------- <details> 折叠面板（指标、来源原文等） ---------------- */
.metric-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  margin-bottom: 8px;
  padding: 0;
}
.metric-block > summary {
  cursor: pointer; padding: 9px 14px;
  font-size: 13.5px; font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.metric-block > summary::-webkit-details-marker { display: none; }
.metric-block > summary::before {
  content: "▸"; color: var(--text-mute); margin-right: 2px;
  transition: transform .12s ease;
}
.metric-block[open] > summary::before { transform: rotate(90deg); }
.metric-block[open] > summary { border-bottom: 1px solid var(--border); }
.metric-block > summary .tab-note { font-weight: 400; color: var(--text-soft); font-size: 12.5px; }
.metric-block .body { padding: 12px 14px; }

/* ---------------- 来源原文引用块 ---------------- */
.source-quote {
  border-left: 3px solid var(--border-strong);
  background: var(--info-soft);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-soft);
  font-size: 13px;
  white-space: pre-wrap;
  margin: 0 0 10px;
}
.trace-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.trace-grid > div > h4 {
  margin: 0 0 6px; font-size: 12.5px; color: var(--text-mute);
  text-transform: uppercase; letter-spacing: .4px;
}
@media (max-width: 900px) { .trace-grid { grid-template-columns: 1fr; } }

/* ---------------- 面包屑 ---------------- */
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  font-size: 13px; color: var(--text-soft);
  margin-bottom: 10px;
}
.breadcrumb .sep { color: var(--text-mute); }
.breadcrumb .here { color: var(--text); font-weight: 600; }

/* ---------------- tab ---------------- */
.tabs {
  display: flex; gap: 2px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.tabs .tab {
  padding: 8px 15px;
  font-size: 13.5px;
  color: var(--text-soft);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs .tab:hover { background: var(--info-soft); text-decoration: none; }
.tabs .tab.on { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------------- 阶段时间线 ---------------- */
.timeline { margin: 4px 0 6px; }
.timeline-row {
  display: grid; grid-template-columns: 116px 1fr 96px;
  align-items: center; gap: 12px;
  padding: 5px 0;
  font-size: 13px;
}
.timeline-label { color: var(--text-soft); font-weight: 600; }
.timeline-track {
  position: relative; height: 18px;
  background: var(--info-soft);
  border-radius: 9px;
  overflow: hidden;
}
.timeline-bar {
  position: absolute; top: 0; bottom: 0;
  border-radius: 9px;
  min-width: 2px;
}
.timeline-bar.tone-0 { background: #7d9be8; }
.timeline-bar.tone-1 { background: #6fb3a0; }
.timeline-bar.tone-2 { background: #c9a35c; }
.timeline-bar.tone-3 { background: #a88fc4; }
.timeline-scale { color: var(--text-mute); font-size: 12px; text-align: right; font-variant-numeric: tabular-nums; }
.timeline-axis {
  display: flex; justify-content: space-between;
  font-size: 11.5px; color: var(--text-mute);
  margin-left: 128px; margin-right: 108px;
  padding-top: 4px;
}

/* ---------------- 计划事项列表（可拖动排序） ---------------- */
.item-list { list-style: none; padding: 0; margin: 0; }
.item-card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  padding: 11px 14px;
}
.item-card.dragging { opacity: .45; }
.item-card.drop-target { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-soft); }
.item-head { display: flex; align-items: flex-start; gap: 10px; }
.drag-handle {
  cursor: grab; color: var(--text-mute);
  font-size: 15px; line-height: 1.4; user-select: none;
  flex: none; padding: 0 2px;
}
.drag-handle:active { cursor: grabbing; }
.item-title { font-weight: 600; flex: 1; min-width: 0; }
.item-title .sub { font-weight: 400; color: var(--text-soft); font-size: 12.5px; margin-left: 6px; }
.item-meta {
  display: flex; flex-wrap: wrap; gap: 4px 14px;
  color: var(--text-mute); font-size: 12.5px;
  margin: 5px 0 0 25px;
}
.item-meta .kv-pair { white-space: nowrap; }
.item-body {
  margin: 7px 0 0 25px; font-size: 13px; color: var(--text-soft);
  white-space: pre-wrap;
}
.item-actions {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin: 9px 0 0 25px;
}
.item-edit { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }
.item-status-cancelled { opacity: .62; }
.item-status-cancelled .item-title { text-decoration: line-through; }

/* ---------------- 区间筛选输入 ---------------- */
.range-inputs { display: flex; align-items: last baseline; gap: 6px; }
.range-inputs input[type="date"] { width: 148px; }
.range-inputs .tilde { color: var(--text-mute); }

/* ---------------- 导出预览 ---------------- */
.export-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel);
  max-height: 620px; overflow: auto;
  padding: 18px 22px;
}
.export-preview pre {
  margin: 0; white-space: pre-wrap; word-break: break-word;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.7;
  color: var(--text);
}
.export-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--text-mute); font-size: 12.5px; }

/* ---------------- 统计条（计划中心各周期计数） ---------------- */
.stat-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 10px;
}
.stat-row .stat { text-align: center; }

/* ---------------- 表格内联编辑 ---------------- */
td.actions form { display: inline; }
td.actions .btn { margin-right: 4px; }
.sub-row td { background: var(--info-soft); font-size: 12.5px; color: var(--text-soft); }