:root {
  --bg: #111;
  --panel: #1b1a18;
  --line: #3a362d;
  --cream: #f4e9d0;
  --muted: #a89f8a;
  --accent: #d9a441;
  --danger: #e0715f;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  color: var(--cream);
  font-family: Georgia, serif;
}
a { color: var(--accent); }
h1, h2 { font-weight: normal; letter-spacing: .12em; text-transform: uppercase; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #1a1306;
  border: 0;
  padding: 12px 28px;
  font: inherit;
  font-size: 1rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.1); }
.btn.ghost { background: transparent; color: var(--cream); border: 1px solid var(--line); padding: 8px 16px; font-size: .8rem; }
.btn.small { padding: 6px 12px; font-size: .75rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px;
  width: min(380px, 92vw);
}
.center { min-height: 100vh; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 18px; padding: 16px; }
label { display: block; margin: 14px 0 6px; font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
input[type=text], input[type=password] {
  width: 100%;
  padding: 10px 12px;
  background: #0d0c0b;
  border: 1px solid var(--line);
  color: var(--cream);
  font: inherit;
}
input:focus { outline: 1px solid var(--accent); }
.msg-error { color: var(--danger); min-height: 1.4em; margin-top: 12px; font-size: .9rem; }
.addr-hint { color: var(--muted); font-size: .85rem; }

/* inbox */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.topbar .who { color: var(--muted); font-size: .9rem; }
.topbar .actions { display: flex; gap: 8px; }
.layout { display: grid; grid-template-columns: 170px 340px 1fr; height: calc(100vh - 57px); }
.sidebar { border-right: 1px solid var(--line); padding: 14px 10px; display: flex; flex-direction: column; gap: 4px; }
.compose-btn { margin-bottom: 12px; padding: 10px 16px; }
.folder {
  background: none; border: 0; color: var(--cream); font: inherit; text-align: left;
  padding: 8px 12px; cursor: pointer; display: flex; justify-content: space-between;
}
.folder:hover { background: var(--panel); }
.folder.active { background: var(--panel); color: var(--accent); }
.count { color: var(--accent); font-size: .85rem; }
.list { border-right: 1px solid var(--line); overflow-y: auto; }
.list-head {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 10px 16px; border-bottom: 1px solid var(--line);
  font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
  position: sticky; top: 0; background: var(--bg);
}
.item .when { color: var(--muted); font-size: .75rem; white-space: nowrap; }
.reader-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.note { font-size: .8rem; padding-top: 0; }
textarea {
  width: 100%; padding: 10px 12px; background: #0d0c0b; border: 1px solid var(--line);
  color: var(--cream); font: inherit; line-height: 1.5; resize: vertical;
}
textarea:focus { outline: 1px solid var(--accent); }
.panel .card.compose { width: min(680px, 96vw); }
.row { display: flex; gap: 10px; margin-top: 8px; }
.btn:disabled { opacity: .6; cursor: wait; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--accent); padding: 10px 18px; z-index: 10;
}
.item { padding: 12px 16px; border-bottom: 1px solid var(--line); cursor: pointer; }
.item:hover, .item.active { background: var(--panel); }
.item .from { font-size: .9rem; display: flex; justify-content: space-between; gap: 8px; }
.item .subj { margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item .prev { color: var(--muted); font-size: .8rem; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item.unread .from, .item.unread .subj { font-weight: bold; color: #fff; }
.item.unread .from::before { content: "\25CF"; color: var(--accent); margin-right: 6px; }
.reader { padding: 24px 28px; overflow-y: auto; }
.reader h2 { margin: 0 0 6px; text-transform: none; letter-spacing: 0; font-size: 1.4rem; }
.reader .meta { color: var(--muted); font-size: .85rem; margin-bottom: 18px; }
.reader pre { white-space: pre-wrap; word-wrap: break-word; font: inherit; line-height: 1.5; }
.empty { color: var(--muted); padding: 24px; }

.panel { position: fixed; inset: 0; background: rgba(0,0,0,.7); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 5; }
.panel .card { width: min(520px, 94vw); max-height: 90vh; overflow-y: auto; }
.linkbox { background: #0d0c0b; border: 1px solid var(--line); padding: 10px; word-break: break-all; font-family: monospace; font-size: .8rem; margin: 12px 0; }
.invite-row { font-size: .85rem; color: var(--muted); padding: 4px 0; border-bottom: 1px solid var(--line); }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; height: auto; }
  .sidebar { flex-direction: row; flex-wrap: wrap; align-items: center; border-right: 0; border-bottom: 1px solid var(--line); padding: 8px 12px; }
  .compose-btn { margin: 0 8px 0 0; }
  .folder { gap: 6px; }
  .list { border-right: 0; max-height: 45vh; border-bottom: 1px solid var(--line); }
}