/* ============================================================================
   工作台外壳（左侧栏 + 项目列表）
   ----------------------------------------------------------------------------
   刻意与 app.js 解耦：不改 app.js 一行，靠"点击它已有的按钮"来驱动步骤。
   布局用 body 上的 grid —— 这样只需在顶栏后插入一个 <aside>，
   完全不用重构原有的 nav.steps 与 main ✗（重构风险远大于收益）。
   ========================================================================== */

body {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  grid-template-rows: auto auto minmax(0, 1fr);
  min-height: 100vh;
}

/* 顶栏横跨整行 */
.topbar { grid-column: 1 / -1; grid-row: 1; }

/* 侧栏占满顶栏以下的左边一整列 */
.side {
  grid-column: 1;
  grid-row: 2 / 4;
  border-right: 1px solid var(--line);
  background: var(--surface);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* 步骤条与内容区留在右侧 */
.steps { grid-column: 2; grid-row: 2; }
main { grid-column: 2; grid-row: 3; }

.side-title {
  margin: 0 0 10px; padding: 0 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .08em;
  color: var(--muted); text-transform: uppercase;
}

.side-btn {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 10px 12px;
  border: 0; border-radius: 10px; background: transparent;
  color: var(--text); font: inherit; font-size: 14px; font-weight: 500;
  text-align: left; cursor: pointer;
  transition: background .15s, color .15s;
}
.side-btn:hover { background: var(--bg); }
.side-btn.is-active { background: #eaf1ff; color: var(--brand); font-weight: 600; }
.side-btn .ico { flex: 0 0 18px; text-align: center; font-size: 15px; }
.side-btn .tag {
  margin-left: auto; padding: 1px 7px; border-radius: 999px;
  background: var(--bg); color: var(--muted);
  font-size: 11.5px; font-weight: 600;
}

.side-sep { margin: 10px 8px; border-top: 1px solid var(--line); }

.side-foot {
  margin-top: auto; padding: 12px 10px 2px;
  border-top: 1px solid var(--line);
  font-size: 12px; line-height: 1.65; color: var(--muted);
}

/* ------------------------------------------------------------ 项目列表 */
.list-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; margin-bottom: 18px;
}
.list-head h2 { margin: 0; font-size: 19px; }
.list-head p { margin: 5px 0 0; font-size: 13px; color: var(--muted); }

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(258px, 1fr));
  gap: 14px;
}

.doc-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); padding: 15px 16px;
  display: flex; flex-direction: column; gap: 9px;
  transition: box-shadow .16s, transform .16s, border-color .16s;
}
.doc-card:hover {
  box-shadow: 0 10px 26px -14px rgba(16, 32, 56, .42);
  border-color: #c3d7f7; transform: translateY(-1px);
}
.doc-card h3 {
  margin: 0; font-size: 14.5px; font-weight: 600; line-height: 1.45;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.doc-meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12.5px; color: var(--muted); }
.doc-meta span { display: inline-flex; align-items: center; gap: 4px; }
.doc-actions { display: flex; gap: 8px; margin-top: 2px; }

.list-empty {
  padding: 46px 24px; text-align: center;
  border: 1px dashed var(--line); border-radius: var(--radius);
  background: var(--surface);
}
.list-empty h3 { margin: 0 0 8px; font-size: 16px; }
.list-empty p { margin: 0 0 16px; font-size: 13.5px; color: var(--muted); }

/* 列表视图与步骤视图互斥：列表打开时隐藏步骤条 */
body.is-list .steps { display: none; }
body.is-list main { grid-row: 2 / 4; }

/* ------------------------------------------------------------ 窄屏 */
@media (max-width: 900px) {
  body { grid-template-columns: 1fr; grid-template-rows: auto auto auto 1fr; }
  .topbar { grid-column: 1; grid-row: 1; }
  /* 手机上侧栏变成横向滚动的一排按钮 */
  .side {
    grid-column: 1; grid-row: 2;
    flex-direction: row; gap: 8px; overflow-x: auto;
    border-right: 0; border-bottom: 1px solid var(--line);
    padding: 10px 12px;
  }
  .side-title, .side-sep, .side-foot { display: none; }
  .side-btn { width: auto; white-space: nowrap; padding: 8px 12px; }
  .step { grid-column: 1; grid-row: 3; }
  main { grid-column: 1; grid-row: 4; }
  body.is-list main { grid-row: 3 / 5; }
}

/* 我的标书：按地区归类的小标题 */
.region-heading {
  display: flex; align-items: baseline; gap: .5rem;
  margin: 1.1rem 0 .6rem; font-size: 1rem; font-weight: 700;
  color: var(--text, #1f2933);
}
.region-heading:first-child { margin-top: 0; }
.region-count {
  font-size: .8125rem; font-weight: 500; color: var(--muted, #6b7280);
}