/* ============================================================
 * app.css — 应用外壳（深色工作台）
 * ============================================================ */

:root {
  --bg:            #0f1115;
  --bg-elev:       #171a21;
  --bg-elev-2:     #1e222b;
  --bg-hover:      #232833;
  --border:        #2a2f3a;
  --border-strong: #3a4150;

  --text:          #e6e9ef;
  --text-dim:      #9aa3b2;
  --text-faint:    #6b7484;

  --accent:        #4a8cff;
  --accent-dim:    #2f5fb3;
  --accent-soft:   rgba(74,140,255,.14);

  --ok:            #35c07f;
  --warn:          #e0a83c;
  --danger:        #e05c62;
  --ok-soft:       rgba(53,192,127,.14);
  --danger-soft:   rgba(224,92,98,.14);
  --warn-soft:     rgba(224,168,60,.14);

  --radius:   8px;
  --radius-s: 5px;
  --shadow:   0 4px 20px rgba(0,0,0,.35);
  --shadow-s: 0 2px 8px rgba(0,0,0,.25);

  --sidebar-w: 214px;
  --topbar-h:  52px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
          "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  --mono: "SF Mono", "Cascadia Mono", Consolas, "Courier New", monospace;
}

[data-theme="light"] {
  --bg:            #f4f6f9;
  --bg-elev:       #ffffff;
  --bg-elev-2:     #f7f9fc;
  --bg-hover:      #eef1f6;
  --border:        #dfe4ec;
  --border-strong: #c3cbd8;
  --text:          #1c2431;
  --text-dim:      #5a6577;
  --text-faint:    #8a93a3;
  --accent:        #2563eb;
  --accent-dim:    #1d4ed8;
  --accent-soft:   rgba(37,99,235,.1);
  --shadow:   0 4px 18px rgba(20,30,50,.1);
  --shadow-s: 0 1px 4px rgba(20,30,50,.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 13.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent-soft); }

/* 滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }

/* ============ 布局 ============ */
#app { display: flex; height: 100vh; overflow: hidden; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
}

.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  height: var(--topbar-h);
  flex: 0 0 var(--topbar-h);
}
.brand-logo {
  width: 30px; height: 30px; flex: none;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #7b5cff);
  color: #fff; font-weight: 700; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: .5px;
}
.brand-title { font-weight: 600; font-size: 13.5px; letter-spacing: .2px; }
.brand-sub { font-size: 10px; color: var(--text-faint); letter-spacing: .6px; text-transform: uppercase; }

.nav { flex: 1; overflow-y: auto; padding: 10px 8px 20px; }
.nav-group {
  font-size: 10.5px; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: .8px;
  padding: 14px 10px 5px;
  font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px; margin-bottom: 1px;
  border-radius: var(--radius-s);
  color: var(--text-dim);
  cursor: pointer; user-select: none;
  font-size: 13px;
  transition: background .12s, color .12s;
}
.nav-item .ni { width: 15px; text-align: center; opacity: .7; font-size: 12px; }
.nav-item em {
  margin-left: auto; font-style: normal;
  font-size: 10.5px; padding: 1px 6px;
  background: var(--bg-elev-2); color: var(--text-faint);
  border-radius: 9px; min-width: 18px; text-align: center;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 500; }
[data-theme="light"] .nav-item.active { color: var(--accent); }
.nav-item.active .ni { opacity: 1; }
.nav-item.active em { background: var(--accent); color: #fff; }

.sidebar-foot { padding: 10px 16px; border-top: 1px solid var(--border); }
.ver { font-size: 10.5px; color: var(--text-faint); }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  height: var(--topbar-h); flex: 0 0 var(--topbar-h);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px;
}
.crumb { font-size: 13px; color: var(--text-dim); font-weight: 500; }
.crumb b { color: var(--text); font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.autosave { font-size: 11px; color: var(--text-faint); transition: color .2s; }
.autosave.saving { color: var(--warn); }

.view { flex: 1; overflow-y: auto; padding: 20px; }

/* ============ 通用组件 ============ */
.page-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; margin-bottom: 16px; flex-wrap: wrap;
}
.page-title { font-size: 19px; font-weight: 600; margin: 0 0 3px; letter-spacing: -.2px; }
.page-desc { font-size: 12.5px; color: var(--text-dim); margin: 0; max-width: 720px; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 11px 15px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev-2);
}
.card-title { font-size: 13px; font-weight: 600; margin: 0; display: flex; align-items: center; gap: 7px; }
.card-title .hint { font-weight: 400; color: var(--text-faint); font-size: 11.5px; }
.card-body { padding: 15px; }
.card-body.tight { padding: 0; }

.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6.5px 13px;
  border-radius: var(--radius-s);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev-2);
  color: var(--text);
  font-size: 12.5px; font-family: inherit;
  cursor: pointer; white-space: nowrap;
  transition: background .12s, border-color .12s, opacity .12s;
  line-height: 1.4;
}
.btn:hover { background: var(--bg-hover); border-color: var(--text-faint); }
.btn:active { transform: translateY(.5px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 500; }
.btn-primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-dim); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); }
.btn-danger { color: var(--danger); border-color: transparent; background: transparent; }
.btn-danger:hover { background: var(--danger-soft); border-color: transparent; }
.btn-sm { padding: 3.5px 9px; font-size: 11.5px; }
.btn-block { width: 100%; justify-content: center; }

.btn-group { display: inline-flex; border: 1px solid var(--border-strong); border-radius: var(--radius-s); overflow: hidden; }
.btn-group .btn { border: none; border-radius: 0; border-right: 1px solid var(--border); }
.btn-group .btn:last-child { border-right: none; }
.btn-group .btn.on { background: var(--accent); color: #fff; }

/* 表单 */
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field > label {
  font-size: 11.5px; color: var(--text-dim); font-weight: 500;
  display: flex; align-items: center; gap: 4px;
}
.field > label .req { color: var(--danger); }
.field .sub { font-size: 10.5px; color: var(--text-faint); }

input[type=text], input[type=number], input[type=date], input[type=email],
select, textarea {
  width: 100%;
  padding: 6.5px 9px;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-s);
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  line-height: 1.4;
  transition: border-color .12s, box-shadow .12s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input::placeholder, textarea::placeholder { color: var(--text-faint); }
input:disabled, select:disabled, textarea:disabled { opacity: .55; cursor: not-allowed; }
textarea { resize: vertical; min-height: 62px; line-height: 1.5; }
select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%239aa3b2' d='M0 0h10L5 6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 9px center;
  padding-right: 26px;
}
input.num, td input.num { text-align: right; font-variant-numeric: tabular-nums; }
input[type=checkbox] { width: auto; accent-color: var(--accent); cursor: pointer; }

.form-grid { display: grid; gap: 12px 14px; grid-template-columns: repeat(4, 1fr); }
.form-grid.g2 { grid-template-columns: repeat(2, 1fr); }
.form-grid.g3 { grid-template-columns: repeat(3, 1fr); }
.form-grid .span2 { grid-column: span 2; }
.form-grid .span4 { grid-column: 1 / -1; }
.form-grid .span3 { grid-column: span 3; }
@media (max-width: 1000px) { .form-grid, .form-grid.g2, .form-grid.g3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px)  { .form-grid, .form-grid.g2, .form-grid.g3 { grid-template-columns: 1fr; }
                            .form-grid .span2, .form-grid .span3, .form-grid .span4 { grid-column: auto; } }

.fieldset-label {
  font-size: 11.5px; font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: .5px;
  padding-bottom: 7px; margin-bottom: 2px;
  border-bottom: 1px solid var(--border);
  grid-column: 1 / -1;
  margin-top: 4px;
}
.fieldset-label:first-child { margin-top: 0; }

/* 表格 */
table.tbl { width: 100%; border-collapse: collapse; font-size: 12.5px; }
table.tbl th {
  text-align: left; font-weight: 600; font-size: 11.5px;
  color: var(--text-dim);
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev-2);
  white-space: nowrap;
}
table.tbl td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.tbl tbody tr:last-child td { border-bottom: none; }
table.tbl tbody tr:hover { background: var(--bg-elev-2); }
table.tbl td.num, table.tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.tbl td.act { text-align: right; white-space: nowrap; }
table.tbl input, table.tbl select, table.tbl textarea {
  border-color: transparent; background: transparent; padding: 4px 6px;
  font-size: 12.5px;
}
table.tbl input:hover, table.tbl select:hover { border-color: var(--border-strong); background: var(--bg); }
table.tbl input:focus, table.tbl select:focus, table.tbl textarea:focus { background: var(--bg); }
table.tbl tr.sub td { background: var(--bg-elev-2); font-size: 11.5px; color: var(--text-dim); }

.tag {
  display: inline-block; padding: 1.5px 7px;
  border-radius: 10px; font-size: 10.5px; font-weight: 500;
  background: var(--bg-elev-2); color: var(--text-dim);
  border: 1px solid var(--border);
}
.tag.draft { background: var(--bg-elev-2); color: var(--text-faint); }
.tag.confirmed { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.tag.shipped { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.tag.done { background: var(--ok-soft); color: var(--ok); border-color: transparent; }

/* 统计卡 */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
@media (max-width: 900px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
}
.stat-label { font-size: 11.5px; color: var(--text-dim); margin-bottom: 6px; }
.stat-value { font-size: 23px; font-weight: 600; letter-spacing: -.5px; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 11px; color: var(--text-faint); margin-top: 3px; }

/* 空状态 */
.empty {
  padding: 46px 20px; text-align: center; color: var(--text-faint);
}
.empty-icon { font-size: 30px; opacity: .3; margin-bottom: 10px; }
.empty-title { font-size: 13.5px; color: var(--text-dim); margin-bottom: 4px; }
.empty-desc { font-size: 12px; max-width: 400px; margin: 0 auto 14px; line-height: 1.7; }

/* 工具栏 */
.toolbar {
  display: flex; align-items: center; gap: 9px;
  margin-bottom: 14px; flex-wrap: wrap;
}
.toolbar input[type=text] { width: 240px; }
.spacer { flex: 1; }

/* Toast */
.toast {
  position: fixed; bottom: 22px; left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: var(--bg-elev-2); color: var(--text);
  border: 1px solid var(--border-strong);
  padding: 9px 18px; border-radius: 20px;
  font-size: 12.5px; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 900;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: var(--danger); color: var(--danger); }

/* 下拉联想 */
.combo-box {
  position: absolute; top: 100%; left: 0; right: 0; z-index: 500;
  background: var(--bg-elev); border: 1px solid var(--border-strong);
  border-radius: var(--radius-s); box-shadow: var(--shadow);
  max-height: 220px; overflow-y: auto; margin-top: 2px;
}
.combo-item { padding: 6px 10px; font-size: 12.5px; cursor: pointer; }
.combo-item:hover { background: var(--accent-soft); color: var(--accent); }

/* 单据选择面板 */
.doc-layout { display: flex; gap: 16px; align-items: flex-start; }
.doc-side { width: 190px; flex: 0 0 190px; position: sticky; top: 0; }
.doc-picker { display: flex; flex-direction: column; gap: 3px; }
.doc-pick {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 11px; border-radius: var(--radius-s);
  cursor: pointer; border: 1px solid transparent;
  color: var(--text-dim); font-size: 12.5px;
  transition: background .12s;
}
.doc-pick:hover { background: var(--bg-hover); color: var(--text); }
.doc-pick.on { background: var(--accent-soft); color: var(--accent); border-color: transparent; font-weight: 500; }
.doc-pick .dp-num {
  width: 20px; height: 20px; flex: none;
  border-radius: 4px; background: var(--bg-elev-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 10.5px; color: var(--text-faint);
}
.doc-pick.on .dp-num { background: var(--accent); color: #fff; }
.doc-pick .dp-check { margin-left: auto; color: var(--ok); font-size: 12px; }
.doc-preview { flex: 1; min-width: 0; }

.paper-wrap {
  background: #2b303b;
  padding: 22px;
  border-radius: var(--radius);
  overflow: auto;
}
[data-theme="light"] .paper-wrap { background: #e9edf3; }

/* 标签页 */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab {
  padding: 8px 15px; font-size: 13px; cursor: pointer;
  color: var(--text-dim); border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: color .12s, border-color .12s;
}
.tab:hover { color: var(--text); }
.tab.on { color: var(--accent); border-bottom-color: var(--accent); font-weight: 500; }

/* 汇总条 */
.sum-bar {
  display: flex; gap: 20px; flex-wrap: wrap;
  padding: 11px 15px;
  background: var(--bg-elev-2);
  border-top: 1px solid var(--border);
  font-size: 12.5px;
}
.sum-item { display: flex; flex-direction: column; gap: 1px; }
.sum-label { font-size: 10.5px; color: var(--text-faint); }
.sum-value { font-weight: 600; font-variant-numeric: tabular-nums; }
.sum-item.strong .sum-value { color: var(--accent); font-size: 15px; }

/* 文档式文本框（提单等长文本） */
.mono-area { font-family: var(--mono); font-size: 12px; }

/* 打印 */
.print-root { display: none; }

@media print {
  body > #app, .toast { display: none !important; }
  .print-root { display: block !important; }
}

@media (max-width: 860px) {
  :root { --sidebar-w: 60px; }
  .brand-text, .nav-item span:not(.ni), .nav-item em, .nav-group, .ver { display: none; }
  .nav-item { justify-content: center; }
  .doc-layout { flex-direction: column; }
  .doc-side { width: 100%; flex: none; }
}