:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1f232c;
  --line: #2a2f3a;
  --text: #e6e8ee;
  --muted: #8b93a3;
  --accent: #4f8cff;
  --accent-2: #1d6bff;
  --code: #ffd166;
  --error: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.brand { font-weight: 700; color: var(--text); letter-spacing: .2px; }
.logout { color: var(--muted); }

main { max-width: 1040px; margin: 0 auto; padding: 24px; }

h1 { font-size: 22px; margin: 0 0 6px; }
h2 { font-size: 16px; margin: 0 0 12px; color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); }
.empty { color: var(--muted); padding: 20px 4px; }
.crumbs { margin: 0 0 14px; }

.hero {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.new-address, .copy-row { display: flex; gap: 8px; }

input, button {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  padding: 9px 12px;
}

input:focus { outline: 2px solid var(--accent); border-color: transparent; }

button {
  cursor: pointer;
  background: var(--accent-2);
  border-color: transparent;
  font-weight: 600;
}
button:hover { filter: brightness(1.1); }
button:active { transform: translateY(1px); }

.grid { width: 100%; border-collapse: collapse; }
.grid th, .grid td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.grid th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.grid tr:hover td { background: var(--panel); }
.grid .subject { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.code {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--code);
  background: rgba(255, 209, 102, .08);
  border: 1px solid rgba(255, 209, 102, .25);
  border-radius: 6px;
  padding: 1px 8px;
  font-weight: 700;
  letter-spacing: .12em;
}

.msg {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
  color: var(--text);
}
.msg:hover { border-color: var(--accent); text-decoration: none; }
.msg-top { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; }
.msg .from { color: var(--muted); overflow: hidden; text-overflow: ellipsis; }
.msg .subject { margin: 6px 0 8px; font-weight: 600; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 16px;
}

.meta { display: grid; grid-template-columns: 90px 1fr; gap: 4px 10px; margin: 14px 0 0; font-size: 14px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; word-break: break-word; }

.code-block {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding: 14px 16px;
  border: 1px dashed rgba(255, 209, 102, .35);
  border-radius: 10px;
  background: rgba(255, 209, 102, .05);
}
.code-block .label { color: var(--muted); font-size: 13px; }
.big-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: .25em;
  color: var(--code);
}

.plain { white-space: pre-wrap; word-break: break-word; margin: 0; font-family: inherit; }
.html-body { background: #fff; color: #111; border-radius: 8px; padding: 16px; overflow: auto; }
.html-body img { max-width: 100%; height: auto; }

.login { width: min(360px, 100%); display: grid; gap: 12px; }
.centered { display: grid; place-items: center; min-height: 100vh; }
.error { color: var(--error); margin: 0; }

@media (max-width: 640px) {
  main { padding: 16px; }
  .hero { align-items: stretch; }
  .grid .subject { max-width: 140px; }
}