:root {
  --bg: #0b0d10;
  --bg-2: #12161c;
  --card: #171c24;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef2f6;
  --muted: #8b97a6;
  --accent: #6cb6ff;
  --accent-2: #9ad0ff;
  --ok: #6ec89a;
  --warn: #e0a03a;
  --danger: #e07a7a;
  --user: #1d4f8a;
  --assistant: #1b222c;
  --radius: 16px;
  --pad: 16px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-tap-highlight-color: transparent;
}
body { padding-top: var(--safe-top); }
button, input, textarea { font: inherit; color: inherit; }
button {
  border: 0;
  background: none;
  cursor: pointer;
}
.hidden { display: none !important; }
.screen { min-height: 100dvh; }
.error { color: var(--danger); }

#login {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  text-align: center;
  gap: 8px;
}
.login-icon {
  width: 88px;
  height: 88px;
  border-radius: 22px;
}
#login h1 { margin: 8px 0 0; font-size: 28px; }
#login p { color: var(--muted); margin: 0 0 12px; max-width: 28ch; }
#login-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(360px, 100%);
}
#login-form input,
#modal-input {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  outline: none;
}
#login-form button,
.fab,
#modal-ok,
.send {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #082038;
  font-weight: 700;
  border-radius: 12px;
  padding: 14px 16px;
}

.top {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: space-between;
  padding: 10px var(--pad) 8px;
  position: sticky;
  top: 0;
  z-index: 5;
  background: linear-gradient(180deg, var(--bg) 80%, transparent);
}
.brand { display: flex; gap: 10px; align-items: center; min-width: 0; flex: 1; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.brand h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sub { margin: 0; color: var(--muted); font-size: 12px; }
.ghost {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--text);
}
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  font-size: 26px;
  line-height: 1;
  color: var(--text);
  flex: 0 0 auto;
}

.slot-bar {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 0 var(--pad) 10px;
  -webkit-overflow-scrolling: touch;
}
.slot {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 11px;
  color: var(--muted);
}
.slot.ok { color: var(--ok); border-color: rgba(110, 200, 154, 0.3); }
.slot.bad { color: var(--danger); }
.slot.warn { color: var(--warn); }

.harness-pick {
  display: flex;
  gap: 8px;
  padding: 0 var(--pad) 10px;
}
.harness-pick button {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 12px;
  padding: 10px 8px;
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
}
.harness-pick button.active {
  background: #102033;
  color: var(--accent-2);
  border-color: rgba(108, 182, 255, 0.35);
}

.list {
  padding: 0 var(--pad) 96px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.empty {
  text-align: center;
  color: var(--muted);
  padding: 48px 12px;
}
.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 12px 12px 14px;
  min-height: 64px;
  text-align: left;
  width: 100%;
}
.row .title {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
  overflow-wrap: anywhere;
}
.row .meta {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.row-del {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 18px;
}

.fab-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px var(--pad) calc(16px + var(--safe-bottom));
  background: linear-gradient(180deg, transparent, var(--bg) 30%);
}
.fab { width: 100%; }

#view-thread {
  display: flex;
  flex-direction: column;
  height: calc(100dvh - var(--safe-top) - 58px);
}
.thread {
  flex: 1;
  overflow-y: auto;
  padding: 8px var(--pad) 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.bubble {
  max-width: 92%;
  border-radius: 16px;
  padding: 10px 12px;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}
.bubble.user {
  align-self: flex-end;
  background: var(--user);
}
.bubble.assistant {
  align-self: flex-start;
  background: var(--assistant);
  border: 1px solid var(--line);
}
.bubble.error {
  align-self: stretch;
  background: #2a1518;
  color: var(--danger);
  border: 1px solid rgba(224, 122, 122, 0.3);
}
.think-wrap {
  margin-bottom: 8px;
}
.think-wrap summary {
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
}
.think {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
  border-left: 2px solid var(--line);
  padding-left: 8px;
  white-space: pre-wrap;
}
.tools {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}
.tool {
  font-size: 11px;
  color: var(--accent-2);
  background: #102033;
  border-radius: 999px;
  padding: 3px 8px;
}
.composer {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  padding: 8px var(--pad) calc(10px + var(--safe-bottom));
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}
.composer textarea {
  flex: 1;
  resize: none;
  max-height: 140px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  outline: none;
}
.send {
  padding: 10px 14px;
  border-radius: 14px;
  min-width: 64px;
}
.send.stop {
  background: #5a2a2a;
  color: #ffd0d0;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 20;
}
.modal-card {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}
.modal-card p { margin: 0 0 12px; }
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}
#modal-input { width: 100%; }

.streaming::after {
  content: "▍";
  animation: blink 1s steps(1) infinite;
  color: var(--accent);
}
@keyframes blink {
  50% { opacity: 0; }
}