:root {
  --bg: #0f1b2d;
  --panel: #16253b;
  --panel-2: #1d3150;
  --text: #e8eef7;
  --muted: #9aabc2;
  --accent: #f2a93b;
  --link: #7cc4ff;
  --danger: #e5534b;
  --ok: #4cc38a;
  --border: #2a4062;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
}
.top {
  display: flex; align-items: center; gap: 10px;
  padding: calc(env(safe-area-inset-top) + 10px) 14px 10px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.top h1 { font-size: 18px; margin: 0; flex: 1; }
.logo { width: 28px; height: 28px; border-radius: 7px; }
.status { font-size: 12px; color: var(--bg); background: var(--accent); padding: 2px 8px; border-radius: 999px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 45vw; }
.icon-btn { background: none; border: 0; color: var(--text); font-size: 24px; padding: 0 6px; }

.feed { flex: 1; overflow-y: auto; padding: 12px 12px 20px; scroll-padding-top: 8px; }
.empty { color: var(--muted); text-align: center; margin-top: 30vh; }

.msg { margin: 0 0 16px; }
.stamp { font-size: 12px; color: var(--muted); margin: 4px 2px; }
.brief { background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 12px; padding: 10px 14px 14px; }
.brief > .stamp { margin: 0 0 4px; }
.assistant { background: var(--panel); border-radius: 12px; padding: 4px 14px 8px; margin-right: 24px; }
.user { display: flex; flex-direction: column; align-items: flex-end; margin-left: 48px; }
.user .bubble { background: #2b5a8c; padding: 8px 12px; border-radius: 14px 14px 4px 14px; white-space: pre-wrap; word-break: break-word; }
.system { text-align: center; color: var(--muted); font-size: 14px; }

.md h2 { font-size: 20px; margin: 8px 0 4px; line-height: 1.3; }
.md h3 { font-size: 17px; margin: 18px 0 6px; padding-top: 12px; border-top: 1px solid var(--border); }
.md h4 { font-size: 16px; margin: 14px 0 4px; }
.md h5 { font-size: 15px; margin: 10px 0 4px; }
.md h3:first-child { border-top: 0; padding-top: 0; }
.md p { margin: 6px 0; }
.md ul, .md ol { margin: 6px 0; padding-left: 22px; }
.md li { margin: 3px 0; }
.md hr { border: 0; border-top: 2px solid var(--border); margin: 16px 0; }
.md code { background: var(--panel-2); padding: 1px 4px; border-radius: 4px; font-size: 14px; }
.md blockquote { margin: 6px 0; padding-left: 10px; border-left: 3px solid var(--border); color: var(--muted); }
.md .table { overflow-x: auto; }
.md table { border-collapse: collapse; margin: 6px 0; font-size: 14px; }
.md th, .md td { border: 1px solid var(--border); padding: 4px 8px; }
.md th { background: var(--panel-2); }
a { color: var(--link); }
a.gmail { display: inline-block; margin-top: 2px; padding: 4px 10px; border: 1px solid var(--link); border-radius: 8px; text-decoration: none; font-size: 14px; }

.extras { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 8px; }
.extras h4 { margin: 4px 0 8px; font-size: 15px; color: var(--accent); }
.card, .trash-item { background: var(--panel-2); border-radius: 10px; padding: 10px; margin: 8px 0; }
.card-title { font-weight: 600; }
.meta { font-size: 13px; color: var(--muted); word-break: break-word; }
.subject { font-weight: 500; margin: 2px 0 6px; word-break: break-word; }
.muted { color: var(--muted); font-size: 14px; }
.done { color: var(--ok); font-size: 14px; align-self: center; }
.error { color: var(--danger); }

.row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
button, a.button {
  font: inherit; font-size: 15px; border: 0; border-radius: 9px; padding: 8px 14px;
  background: var(--accent); color: #1a1205; font-weight: 600; text-decoration: none; display: inline-block;
}
button.secondary, a.button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); font-weight: 500; }
button.danger { background: var(--danger); color: white; }
button.small { padding: 5px 10px; font-size: 14px; }
button.wide { width: 100%; margin: 6px 0; }
button:disabled { opacity: 0.5; }

.composer {
  display: flex; gap: 8px; padding: 8px 10px calc(env(safe-area-inset-bottom) + 8px);
  background: var(--panel); border-top: 1px solid var(--border);
}
.composer textarea {
  flex: 1; resize: none; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 18px; padding: 8px 14px; max-height: 160px;
}
.composer button { border-radius: 50%; width: 42px; height: 42px; padding: 0; font-size: 18px; align-self: flex-end; }

dialog.sheet {
  width: min(560px, 100vw); max-width: 100vw; max-height: 92vh; margin: auto auto 0; border: 0;
  border-radius: 16px 16px 0 0; background: var(--panel); color: var(--text); padding: 16px 16px calc(env(safe-area-inset-bottom) + 16px);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.55); }
dialog h2 { margin: 0 0 8px; font-size: 19px; }
dialog h3 { margin: 18px 0 4px; font-size: 16px; }
dialog textarea { width: 100%; font: 14px/1.4 ui-monospace, monospace; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.field { display: flex; gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--border); font-size: 14px; word-break: break-word; }
.field .label { color: var(--muted); min-width: 92px; }
pre.body { white-space: pre-wrap; word-break: break-word; font: 14px/1.45 system-ui, sans-serif; background: var(--bg); border-radius: 8px; padding: 10px; max-height: 45vh; overflow-y: auto; }

/* attachments */
.composer .attach { background: transparent; color: var(--text); border: 1px solid var(--border); font-size: 18px; }
.pending { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 10px 0; background: var(--panel); border-top: 1px solid var(--border); }
.chip { display: flex; align-items: center; gap: 6px; background: var(--panel-2); border-radius: 10px; padding: 4px 6px; max-width: 100%; font-size: 13px; }
.chip img { width: 36px; height: 36px; object-fit: cover; border-radius: 6px; }
.chip .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 52vw; }
.chip.error { color: var(--danger); }
.chip .x { background: transparent; color: var(--muted); padding: 2px 6px; font-size: 14px; }
.uploads { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; margin-bottom: 4px; }
.uploads img { max-width: 62vw; max-height: 260px; border-radius: 12px; display: block; }
.file-chip { background: #2b5a8c; color: var(--text); padding: 8px 12px; border-radius: 12px; text-decoration: none; font-size: 14px; }

/* read receipts */
.receipt { font-size: 12px; color: var(--muted); margin: 4px 2px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.receipt .ticks.read { color: var(--link); }
.receipt.failed { color: var(--danger); }

/* working indicator */
.working { border: 1px solid var(--border); }
.shimmer-text {
  font-weight: 600; margin: 6px 0 2px;
  background: linear-gradient(90deg, var(--muted) 0%, var(--muted) 35%, #ffffff 50%, var(--muted) 65%, var(--muted) 100%);
  background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 2s linear infinite;
}
.working .activity { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.skeleton span {
  display: block; height: 10px; border-radius: 6px; margin: 7px 0;
  background: linear-gradient(90deg, var(--panel-2) 0%, #2c4670 50%, var(--panel-2) 100%);
  background-size: 300% 100%; animation: shimmer 1.6s linear infinite;
}
.skeleton span:nth-child(1) { width: 92%; }
.skeleton span:nth-child(2) { width: 78%; }
.skeleton span:nth-child(3) { width: 55%; }
@keyframes shimmer { from { background-position: 100% 0; } to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .shimmer-text, .skeleton span { animation-duration: 6s; } }

/* developer updates */
.developer { border-left: 3px solid var(--ok); }
.developer .who { font-size: 13px; color: var(--ok); font-weight: 600; margin-top: 6px; }


/* "Seen" shimmers while a reply is on its way */
.receipt .ticks.waiting {
  background: linear-gradient(90deg, var(--link) 0%, var(--link) 35%, #ffffff 50%, var(--link) 65%, var(--link) 100%);
  background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 2s linear infinite;
}