:root {
  --bg: #f3efe6;
  --paper: #fffdf8;
  --ink: #1f1b16;
  --muted: #6f675e;
  --line: #e4ddd2;
  --accent: #c2410c;
  --accent-ink: #fff7ed;
  --ok: #3f6b4b;
  --shadow: 0 10px 30px rgba(31, 27, 22, 0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(900px 420px at 10% -10%, #f8d9c4 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select { font: inherit; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 8vw;
}
.brand { font-weight: 750; letter-spacing: 0.04em; }
.brand span { color: var(--accent); }

.wrap { width: min(920px, 92vw); margin: 0 auto 64px; }
h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.15; margin: 12px 0 8px; }
.lead { color: var(--muted); margin: 0 0 28px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.addr {
  display: grid;
  grid-template-columns: 1fr auto minmax(140px, 220px) auto;
  gap: 8px;
  align-items: center;
}
.addr input, .addr select, .field {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 12px 14px;
}
.addr input { min-width: 0; }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}
.inbox-interval {
  width: 4.2rem;
  padding: 6px 8px;
  margin: 0 2px;
}
.share { color: var(--muted); font-size: 13px; margin: 12px 0 0; word-break: break-all; }

button.primary, button.ghost, button.danger {
  border: 0;
  border-radius: 12px;
  padding: 11px 14px;
  cursor: pointer;
}
button.primary { background: var(--accent); color: var(--accent-ink); }
button.ghost { background: #efe8dc; color: var(--ink); }
button.danger { background: #9f1239; color: #fff; }
button:disabled { opacity: 0.55; cursor: default; }
label.chk { color: var(--muted); display: flex; gap: 8px; align-items: center; }

.inbox { margin-top: 28px; }
.inbox h2 { margin: 0 0 12px; font-size: 18px; }
.mail {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.mail-row {
  display: flex;
  align-items: stretch;
  gap: 10px;
}
.mail-row .mail-main {
  flex: 1;
  min-width: 0;
  width: auto;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  cursor: pointer;
}
.mail-row .mail-main:hover { border-color: #d4b8a2; }
.mail-code {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 7.5rem;
  max-width: 9rem;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.mail-code .code-val {
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  word-break: break-all;
  text-align: center;
  line-height: 1.2;
}
.mail-code .mail-copy-code {
  padding: 4px 12px;
  font-size: 12px;
}
@media (max-width: 520px) {
  .mail-row.has-code { flex-direction: column; }
  .mail-code {
    flex-direction: row;
    max-width: none;
    width: 100%;
    justify-content: space-between;
  }
}
.mail .from { font-weight: 650; }
.mail .sub { margin-top: 4px; }
.mail .meta { color: var(--muted); font-size: 12px; margin-top: 6px; }
.mail-table-wrap { margin-top: 4px; }
.mail-expand-hint { margin: 10px 0 0; font-size: 12px; }
.mail-summary-row { cursor: pointer; }
.mail-summary-row:hover td { background: rgba(248, 217, 196, 0.25); }
.mail-summary-row.expanded td { background: rgba(248, 217, 196, 0.4); }
.mail-detail-row > td { padding: 0 0 10px !important; vertical-align: top; border-top: none; }
.mail-expand-panel {
  padding: 14px 16px 18px;
  margin: 4px 0 0;
  border: 2px dashed #d4b8a2;
  border-radius: 12px;
  background: #fffefb;
}
.mail-expand-head { margin-bottom: 12px; }
.mail-expand-head p { margin: 4px 0; }
.mail-expand-frame {
  width: 100%;
  min-height: 260px;
  height: min(52vh, 520px);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.mail-expand-text {
  max-height: min(52vh, 520px);
  overflow: auto;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  white-space: pre-wrap;
  word-break: break-word;
}
.mail-from { font-weight: 650; max-width: 14rem; word-break: break-all; }
.mail-sub { max-width: 20rem; word-break: break-word; }
.mail-time { white-space: nowrap; color: var(--muted); font-size: 13px; }
.mail-code-inline {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}
.mail-code-inline .code-val {
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}
.mail-row-actions { white-space: nowrap; }
.mbox-inbox-panel { margin-top: 18px; border-color: #d4b8a2; }
.empty { color: var(--muted); }

dialog {
  border: 0;
  border-radius: 18px;
  width: min(760px, 94vw);
  padding: 0;
  background: var(--paper);
  box-shadow: var(--shadow);
}
dialog.mail-dlg {
  resize: both;
  overflow: auto;
  width: min(760px, 94vw);
  height: min(560px, 88vh);
  max-width: 98vw;
  max-height: 94vh;
  min-width: 320px;
  min-height: 260px;
}
dialog::backdrop { background: rgba(31, 27, 22, 0.35); }
.dlg { padding: 20px; }
dialog.mail-dlg .dlg {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  box-sizing: border-box;
}
.dlg header { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
dialog.mail-dlg .dlg-body {
  flex: 1 1 auto;
  min-height: 160px;
  display: flex;
  flex-direction: column;
}
.dlg-resize-hint {
  margin: 10px 0 0;
  font-size: 11px;
  text-align: right;
  user-select: none;
  pointer-events: none;
}
.frame {
  width: 100%;
  min-height: 280px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
dialog.mail-dlg .frame,
dialog.mail-dlg .plain:not([hidden]) {
  flex: 1 1 auto;
  min-height: 200px;
  height: 100%;
}
dialog.mail-dlg .plain:not([hidden]) {
  overflow: auto;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.frame[hidden],
.plain[hidden] { display: none !important; }
.plain { white-space: pre-wrap; word-break: break-word; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; margin-bottom: 18px; }
.stat { padding: 14px; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; }
.stat b { display: block; font-size: 26px; }
.stat span { color: var(--muted); font-size: 13px; }
.stat.warn b { color: #b45309; }
.stat.danger b { color: #b91c1c; }
.form { display: grid; gap: 10px; margin: 12px 0; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.row { display: flex; gap: 8px; flex-wrap: wrap; margin: 10px 0; align-items: center; }
.pager .page-size { width: auto; min-width: 4.5rem; padding: 6px 8px; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  background: #efe8dc;
  border-radius: 999px;
  padding: 6px 10px;
}
.login { width: min(420px, 92vw); margin: 12vh auto; }
.err { color: #9f1239; min-height: 1.2em; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 16px;
}
.tabs button {
  border: 1px solid var(--line);
  background: #fffdf8;
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.tabs button.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.pane { display: block; }
.pane[hidden] { display: none; }
.mbox-gen-tabs { margin-top: 8px; }
.mbox-toolbar { margin: 0 0 10px; align-items: center; display: flex; flex-wrap: wrap; gap: 10px; }
.mbox-toolbar[hidden],
.mbox-user-head[hidden],
#mbox-rand-len-wrap[hidden] { display: none !important; }
.mbox-user-head { margin: 0 0 12px; }
.mbox-user-head .seg { max-width: 420px; }
.mbox-hint { font-size: 13px; color: var(--muted); }
.mbox-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0 0 12px;
}
.mbox-split.only-list { grid-template-columns: 1fr; }
.mbox-split.only-list #mbox-user-col { display: none; }
.mbox-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 0 0 10px;
}
.mbox-foot .mbox-pass { flex: 1; min-width: 180px; }
.mbox-foot .primary { margin-left: auto; min-width: 120px; }
#mbox-rand-len-wrap[hidden] { display: none; }
.mbox-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 8px 0 6px;
}
.mbox-area {
  width: 100%;
  min-height: 160px;
  resize: vertical;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
}
.mbox-num { width: 72px; }
.seg {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 8px;
}
.seg button {
  flex: 1;
  border: 0;
  background: #fff;
  padding: 10px 8px;
  cursor: pointer;
  color: var(--muted);
  font-weight: 650;
}
.seg button + button { border-left: 1px solid var(--line); }
.seg button.active {
  background: var(--accent);
  color: var(--accent-ink);
}
@media (max-width: 820px) {
  .mbox-split { grid-template-columns: 1fr; }
  .mbox-foot .primary { margin-left: 0; width: 100%; }
}
.chart { width: 100%; height: auto; display: block; margin: 4px 0 12px; }
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 4px 0 8px;
  font-size: 13px;
  color: var(--muted);
}
.chart-key { display: inline-flex; align-items: center; gap: 6px; }
.chart-key i {
  width: 10px;
  height: 10px;
  border-radius: 99px;
  display: inline-block;
}

@media (max-width: 720px) {
  .addr { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .top { padding: 16px 4vw; }
}