/* TunnelWatch 状态面板 — 极浅色 + 1dp 描边,跟 Android widget 风格一致 */
:root {
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --border: #E5E7EB;
  --text: #1A1F2E;
  --secondary: #888888;
  --meta: #666666;
  --ok: #22C55E;
  --warn: #F59E0B;
  --err: #EF4444;
  --primary: #0F4C81;
  --primary-soft: #E8F0F8;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.page {
  width: 100%;
  margin: 0 auto;
  padding: 20px 20px 80px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dashboard-layout {
  display: grid;
  grid-template-columns: 344px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
}
.dashboard-main { min-width: 0; }

/* ---------- Billing receipt rail ---------- */
.receipt-rail {
  position: sticky;
  top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  max-height: calc(100vh - 28px);
}
.receipt-toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 4px;
}
.receipt-toolbar h2 {
  margin: 1px 0 0;
  font-size: 18px;
  line-height: 1.1;
}
.receipt-kicker {
  color: var(--secondary);
  font: 700 9px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .16em;
}
.receipt-add,
.bill-form-actions button {
  appearance: none;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--surface);
  border-radius: 4px;
  padding: 7px 11px;
  font: 700 11px/1.2 inherit;
  cursor: pointer;
}
.receipt-add:hover,
.bill-form-actions button:hover { background: var(--primary); border-color: var(--primary); }
.receipt-add:focus-visible,
.bill-form button:focus-visible,
.bill-form input:focus-visible,
.bill-form select:focus-visible,
.bill-form textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.bill-form {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px;
  display: grid;
  gap: 10px;
  animation: bill-form-in .22s cubic-bezier(.22, 1, .36, 1) both;
}
.bill-form[hidden] { display: none; }
@keyframes bill-form-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.bill-form-title,
.bill-form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.bill-form-title strong { font-size: 13px; }
.bill-form-title button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--secondary);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.bill-form label {
  display: grid;
  gap: 4px;
  color: var(--meta);
  font-size: 10px;
  letter-spacing: .04em;
}
.bill-form input,
.bill-form select,
.bill-form textarea {
  width: 100%;
  min-width: 0;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  color: var(--text);
  padding: 5px 1px;
  font: 500 12px/1.35 inherit;
}
.bill-form textarea { resize: vertical; }
.bill-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.bill-unlimited { display: flex !important; align-items: center; grid-auto-flow: column; justify-content: start; }
.bill-unlimited input { width: 14px; accent-color: var(--primary); }
.bill-form-actions span { color: var(--err); font-size: 10px; }

.receipt-paper {
  position: relative;
  overflow: auto;
  scrollbar-width: thin;
  background: var(--surface);
  border: 1px solid oklch(0.9 0.008 255);
  box-shadow: 0 10px 28px oklch(0.32 0.025 255 / .08);
  padding: 18px 18px 24px;
  color: oklch(0.28 0.018 255);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.receipt-paper::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 7px;
  background: radial-gradient(circle at 4px 8px, transparent 4px, var(--surface) 4.5px) 0 0 / 8px 8px repeat-x;
}
.receipt-head,
.receipt-entry-head,
.receipt-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.receipt-head {
  font-size: 9px;
  letter-spacing: .1em;
}
.receipt-summary {
  display: grid;
  gap: 2px;
  padding: 20px 0 14px;
}
.receipt-summary span { color: var(--meta); font-size: 10px; }
.receipt-summary strong { font-size: 30px; line-height: 1; letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.receipt-rule {
  overflow: hidden;
  height: 12px;
  color: oklch(0.72 0.01 255);
  font-size: 9px;
  white-space: nowrap;
  letter-spacing: .2em;
}
.receipt-feed { display: grid; }
.receipt-entry {
  padding: 15px 0 14px;
  border-bottom: 1px dashed oklch(0.82 0.008 255);
  transform-origin: top center;
  animation: receipt-print .42s cubic-bezier(.22, 1, .36, 1) both;
}
@keyframes receipt-print {
  from { opacity: 0; transform: translateY(-14px) scaleY(.96); }
  to { opacity: 1; transform: translateY(0) scaleY(1); }
}
.receipt-entry-head strong { font: 700 12px/1.3 inherit; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.receipt-entry-head span { flex: none; font-size: 9px; color: var(--meta); }
.receipt-kind {
  margin: 4px 0 9px;
  color: var(--primary);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .12em;
}
.receipt-line { padding: 2px 0; color: var(--meta); font-size: 10px; }
.receipt-line b { color: var(--text); font-weight: 600; text-align: right; }
.receipt-amount { margin-top: 7px; color: var(--text); font-size: 16px !important; }
.receipt-actions { display: flex; gap: 12px; padding-top: 10px; }
.receipt-actions button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--meta);
  padding: 0;
  font: 700 9px/1 inherit;
  cursor: pointer;
  letter-spacing: .06em;
}
.receipt-actions button:hover { color: var(--primary); }
.receipt-empty { padding: 36px 0; color: var(--secondary); text-align: center; font-size: 10px; line-height: 1.8; }
.receipt-foot { padding-top: 18px; color: var(--secondary); text-align: center; font-size: 8px; line-height: 1.8; letter-spacing: .08em; }

/* ---------- 筛选面板 / 共享 banner ---------- */
.bill-filter {
  display: grid;
  gap: 8px;
  padding: 10px 0 12px;
  border-bottom: 1px dashed oklch(0.82 0.008 255);
  margin-bottom: 4px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
}
.bill-filter[hidden] { display: none; }
.bill-filter-row { display: grid; gap: 4px; }
.bill-filter-row > label,
.bill-filter-payers {
  display: grid;
  gap: 4px;
}
.bill-filter-label,
.bill-filter-row label {
  color: var(--secondary);
  font: 700 9px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .14em;
}
.bill-filter-dates {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 12px;
}
.bill-filter-dates input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 6px;
  font: 500 12px/1.2 inherit;
  color: var(--text);
  background: var(--surface);
}
.bill-filter-dash { color: var(--secondary); }
.bill-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 22px;
}
.bill-filter-chips .chip {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--meta);
  border-radius: 999px;
  padding: 3px 9px;
  font: 600 10px/1.2 inherit;
  cursor: pointer;
  letter-spacing: .02em;
  transition: background .12s, color .12s, border-color .12s;
}
.bill-filter-chips .chip:hover { color: var(--text); }
.bill-filter-chips .chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.bill-filter-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.bill-filter-actions > * { flex: 0 0 auto; }

/* 支付人多选下拉 */
.payer-dropdown {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
}
.payer-dropdown > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  color: var(--text);
  font: 600 10px/1.2 inherit;
  letter-spacing: .04em;
  user-select: none;
  min-width: 0;
}
.payer-dropdown > summary::-webkit-details-marker { display: none; }
.payer-dropdown[open] > summary {
  border-color: var(--primary);
  color: var(--primary);
}
.payer-dropdown-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1;
}
.payer-dropdown-caret {
  font-size: 9px;
  color: var(--secondary);
  transition: transform .15s;
}
.payer-dropdown[open] .payer-dropdown-caret { transform: rotate(180deg); }
.payer-dropdown-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 200px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 8px 24px oklch(0.32 0.025 255 / .12);
  padding: 4px;
  display: grid;
  gap: 1px;
  min-width: 140px;
}
.payer-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 11px;
  color: var(--text);
  cursor: pointer;
  letter-spacing: 0;
}
.payer-option:hover { background: var(--primary-soft); }
.payer-option input { width: 12px; height: 12px; accent-color: var(--primary); }
.payer-empty {
  padding: 8px 10px;
  color: var(--secondary);
  font-size: 10px;
  text-align: center;
}
.bill-filter-reset,
.bill-filter-share {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 4px;
  padding: 5px 10px;
  font: 700 10px/1.2 inherit;
  letter-spacing: .04em;
  cursor: pointer;
}
.bill-filter-share {
  background: var(--text);
  color: var(--surface);
  border-color: var(--text);
}
.bill-filter-share:hover { background: var(--primary); border-color: var(--primary); }
.bill-filter-reset:hover { color: var(--primary); border-color: var(--primary); }

.shared-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  margin: 6px 0 10px;
  background: var(--primary-soft);
  border: 1px solid var(--primary);
  border-radius: 6px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
  font-size: 11px;
  color: var(--primary);
}
.shared-banner strong { display: block; font-size: 12px; }
.shared-banner span { display: block; color: var(--meta); font-size: 10px; margin-top: 1px; }

/* 共享筛选视图:只显示账本,把图表区、device picker、view switcher、footer 全部隐藏 */
body.is-share-mode .dashboard-main,
body.is-share-mode #view-switcher,
body.is-share-mode .device-picker,
body.is-share-mode .page-footer,
body.is-share-mode .brand h1::after { display: none !important; }
body.is-share-mode .topbar { gap: 8px; }
body.is-share-mode .dashboard-layout { grid-template-columns: 1fr; }
body.is-share-mode .receipt-rail { position: static; max-width: 520px; margin: 0 auto; }
body.is-share-mode .receipt-paper { max-height: calc(100vh - 220px); }
body.is-share-mode .brand h1 { font-size: 16px; }

@media (max-width: 980px) {
  .dashboard-layout { grid-template-columns: 1fr; }
  .receipt-rail { position: static; max-height: none; }
  .receipt-paper { max-height: 520px; }
}

/* ---------- Masonry (真瀑布流 CSS columns) ----------
   CSS columns 才是真瀑布流 —— 不同高度的卡片在 column 内按内容自然累加,
   column 不会"拉平"该行卡片高度,底部永远不留空白(短列到顶,长列自然更长)。

   配合 column-count 显式断点:
   - 1100-1699 → 2 列(每列 ~673,卡片 6/列,正好填满)
   - 1700-2299 → 3 列(每列 ~644,卡片 4/列,正好填满)
   - 2300-2999 → 4 列(每列 ~554,卡片 3/列,正好填满)
   - 3000+     → 6 列(每列 ~482,卡片 2/列,正好填满 2 行) — 12 张卡可整除

   column-width: 420px 作为最小列宽上限,column-count 作为最大列数,
   浏览器自动取 min(column-count, floor((容器宽-间隙)/column-width))。
   卡片宽度 = (容器宽 - (n-1)*gap) / n,落在 482~673 之间(自然 ≤720,≥420)。

   column-fill: balance(默认) — 浏览器会让各列高度尽量接近,避免某列过长/过短;
   容器无固定高度,所以无底部空白问题。
*/
.masonry {
  column-count: 1;
  column-width: 420px;
  column-gap: 14px;
  column-fill: balance;
}
@media (min-width: 1100px) { .masonry { column-count: 2; } }
@media (min-width: 1700px) { .masonry { column-count: 3; } }
@media (min-width: 2300px) { .masonry { column-count: 4; } }
@media (min-width: 3000px) { .masonry { column-count: 6; } }

/* 关键:阻止卡片在 column 内被切断 */
.masonry > section {
  break-inside: avoid;
  page-break-inside: avoid;
  -webkit-column-break-inside: avoid;
  display: block;            /* column 子元素需要 block 才能正确 flow */
  width: 100%;
  margin: 0 0 14px;          /* 列内卡片之间的垂直间距(配合 column-gap 做列间距) */
  min-width: 0;              /* 防止 canvas 等子元素溢出 */
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-soft);
}
.device-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
}
.device-picker label {
  font-size: 11px;
  color: var(--secondary);
  letter-spacing: 0.3px;
}
.device-picker select {
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--text);
  outline: none;
  min-width: 140px;
  font-weight: 500;
}

/* ---------- Widget mirror ---------- */
.widget-mirror {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.widget-server {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.widget-update {
  font-size: 10px;
  color: var(--secondary);
  white-space: nowrap;
}
.widget-row {
  font-size: 12px;
  color: var(--text);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
}
.uid-row, .sub-row {
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.uid-row::-webkit-scrollbar, .sub-row::-webkit-scrollbar { display: none; }
.uid-chip, .sub-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 12px;
  white-space: nowrap;
}
.uid-chip .sq {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 1px;
}
.widget-meta {
  font-size: 11px;
  color: var(--meta);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  margin-top: 2px;
}
.widget-meta .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* ---------- Chart cards ---------- */
.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px 16px;
}
.chart-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.chart-card h2 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.chart-hint {
  font-size: 11px;
  color: var(--secondary);
}
.chart-wrap {
  position: relative;
  width: 100%;
  height: 240px;
}

/* ---------- Region card list ---------- */
.region-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.region-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.region-row:last-child { border-bottom: none; }
.region-row .region-name {
  flex: 0 0 64px;
  font-weight: 600;
  color: var(--text);
}
.region-row .region-bar {
  flex: 1;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.region-row .region-bar .fill {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--ok);
  transition: width 0.3s;
}
.region-row .region-bar .fill.warn { background: var(--warn); }
.region-row .region-bar .fill.err  { background: var(--err); }
.region-row .region-count {
  flex: 0 0 64px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--secondary);
  font-size: 11px;
}
.region-row .region-lat {
  flex: 0 0 64px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-size: 11px;
  font-weight: 600;
}

/* ---------- Slowest nodes list ---------- */
.slowest-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.slowest-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.slowest-row:last-child { border-bottom: none; }
.slowest-row .rank {
  flex: 0 0 22px;
  text-align: center;
  font-weight: 700;
  color: var(--meta);
  font-size: 11px;
}
.slowest-row .name {
  flex: 1;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.slowest-row .region {
  flex: 0 0 56px;
  color: var(--meta);
  font-size: 11px;
}
.slowest-row .lat {
  flex: 0 0 64px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--warn);
}

/* ---------- Footer ---------- */
.page-footer {
  margin-top: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--secondary);
}
.page-footer .pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  margin-right: 6px;
  vertical-align: middle;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ---------- Status dot in mirror ---------- */
.mirror-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

/* ---------- Empty / loading ---------- */
.empty {
  color: var(--secondary);
  font-style: italic;
  font-size: 12px;
}