:root {
  color-scheme: dark;
  --bg: #0b0f0c;
  --panel: #131a15;
  --panel-2: #18211b;
  --line: #2a3a2f;
  --line-soft: #223028;
  --text: #eef4ee;
  --muted: #9db0a3;
  --accent: #b3e2ba;
  --accent-dim: #7fbf8c;
  --danger: #f08a8a;
  --warn: #e8c07a;
  --radius: 12px;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body { margin: 0; background: radial-gradient(1200px 600px at 20% -10%, #16241b 0%, var(--bg) 60%); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Lock screen ---------- */
.lock-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}
.lock-card {
  width: min(24rem, 100%);
  display: grid;
  gap: .7rem;
  padding: 1.6rem;
  background: linear-gradient(180deg, #16201a, #101713);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55);
}
.lock-mark, .brand-mark {
  display: grid; place-items: center;
  width: 2.4rem; height: 2.4rem;
  border-radius: 10px;
  background: var(--accent);
  color: #0b1a10;
  font-weight: 800;
}
.lock-card h1 { margin: .2rem 0 0; font-size: 1.5rem; letter-spacing: -.02em; }
.lock-sub { margin: 0 0 .4rem; color: var(--muted); font-size: .9rem; }
.remember { display: flex; align-items: center; gap: .5rem; font-weight: 500; color: var(--muted); }
.remember input { width: auto; }

/* ---------- Controls ---------- */
label { font-weight: 600; font-size: .85rem; color: var(--muted); }
input, textarea, select, button { font: inherit; border-radius: 9px; }
input, textarea, select {
  width: 100%;
  color: var(--text);
  background: #0d1410;
  border: 1px solid var(--line);
  padding: .7rem .8rem;
}
textarea { resize: none; }
button {
  padding: .7rem 1rem;
  color: #0b1a10;
  background: var(--accent);
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: filter .15s ease, opacity .15s ease;
}
button:hover:not(:disabled) { filter: brightness(1.06); }
button:disabled { opacity: .55; cursor: wait; }
button.ghost {
  color: var(--text);
  background: transparent;
  border-color: var(--line);
  font-weight: 600;
}
button.small { padding: .45rem .7rem; font-size: .85rem; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.status { min-height: 1.2rem; margin: .35rem 0 0; color: var(--muted); font-size: .85rem; }
.status.error { color: var(--danger); }

/* ---------- App shell ---------- */
.app { min-height: 100dvh; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .7rem clamp(.8rem, 3vw, 1.4rem);
  background: rgba(11, 15, 12, .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: .65rem; min-width: 0; }
.brand strong { display: block; font-size: .98rem; }
.brand small { display: block; color: var(--muted); font-size: .78rem; }
.topbar-actions { display: flex; gap: .5rem; }

.layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22rem;
  gap: 1rem;
  padding: 1rem clamp(.8rem, 3vw, 1.4rem) 1.2rem;
  min-height: 0;
}
.chat-pane { display: flex; flex-direction: column; min-height: 0; gap: .6rem; }
.transcript {
  flex: 1;
  min-height: 40dvh;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: .75rem;
  padding: .9rem;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}
.composer { display: flex; gap: .6rem; align-items: flex-end; }
.composer textarea { max-height: 30dvh; }

/* ---------- Messages ---------- */
article.msg { padding: .8rem .9rem; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--line-soft); }
article.msg.user { background: #1d2b22; }
article.msg .who { display: flex; justify-content: space-between; gap: .5rem; font-size: .78rem; color: var(--muted); }
article.msg .body { margin: .4rem 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
article.msg .body code { background: #0d1410; padding: .1rem .3rem; border-radius: 4px; font-size: .9em; }
article.msg .meta { display: block; margin-top: .5rem; font-size: .76rem; color: var(--muted); }

/* ---------- Tool cards ---------- */
details.tool-card {
  margin-top: .6rem;
  background: #0c120e;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
details.tool-card > summary {
  display: flex; align-items: center; gap: .55rem;
  padding: .55rem .7rem;
  cursor: pointer;
  font-size: .84rem;
  font-weight: 600;
  list-style: none;
  background: #101812;
}
details.tool-card > summary::-webkit-details-marker { display: none; }
details.tool-card > summary::before { content: "▸"; color: var(--accent-dim); transition: transform .15s ease; }
details.tool-card[open] > summary::before { transform: rotate(90deg); }
.tool-name { color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.tool-badge { margin-left: auto; font-size: .72rem; color: var(--muted); font-weight: 500; }
.tool-badge.ok { color: var(--accent-dim); }
.tool-badge.fail { color: var(--danger); }
.tool-body { padding: .6rem .7rem .75rem; display: grid; gap: .5rem; }
.tool-body pre {
  margin: 0;
  padding: .6rem;
  max-height: 22rem;
  overflow: auto;
  background: #080c09;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  font: .8rem/1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.tool-body .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.tool-body img { max-width: 100%; border-radius: 8px; border: 1px solid var(--line); display: block; }

/* ---------- Telemetry drawer ---------- */
.telemetry { display: grid; gap: .8rem; align-content: start; min-height: 0; overflow: auto; }
.panel {
  padding: .85rem;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: .6rem;
}
.panel h2 { margin: 0; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.engine-switch { display: grid; grid-template-columns: repeat(3, 1fr); gap: .4rem; }
.engine-switch button {
  padding: .5rem .3rem;
  font-size: .78rem;
  color: var(--text);
  background: #0d1410;
  border: 1px solid var(--line);
  font-weight: 600;
}
.engine-switch button.active { background: var(--accent); color: #0b1a10; border-color: var(--accent); }
.toggle { display: flex; align-items: center; gap: .5rem; color: var(--text); font-weight: 500; }
.toggle input { width: auto; }
.vital { display: grid; grid-template-columns: 2.6rem 1fr 3rem; align-items: center; gap: .5rem; font-size: .82rem; }
.vital b { text-align: right; font-variant-numeric: tabular-nums; color: var(--muted); font-weight: 600; }
.bar { height: .5rem; background: #0d1410; border-radius: 999px; overflow: hidden; border: 1px solid var(--line-soft); }
.bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--accent-dim), var(--accent)); transition: width .4s ease; }
.bar i.warn { background: linear-gradient(90deg, #c9a45c, var(--warn)); }
.bar i.crit { background: linear-gradient(90deg, #c96a6a, var(--danger)); }
.counts { display: grid; grid-template-columns: repeat(3, 1fr); gap: .4rem; margin: 0; }
.counts div { background: #0d1410; border: 1px solid var(--line-soft); border-radius: 8px; padding: .45rem; text-align: center; }
.counts dt { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.counts dd { margin: .15rem 0 0; font-weight: 700; font-variant-numeric: tabular-nums; }
.clone-tabs { display: flex; gap: .35rem; }
.clone-tabs button {
  flex: 1;
  padding: .4rem .2rem;
  font-size: .76rem;
  color: var(--text);
  background: #0d1410;
  border: 1px solid var(--line);
  font-weight: 600;
}
.clone-tabs button.active { background: var(--accent); color: #0b1a10; }
.clone-tabs button.down { border-color: #5a3a3a; color: var(--danger); }
.clone-screen {
  margin: 0;
  height: 15rem;
  overflow: auto;
  padding: .6rem;
  background: #080c09;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  font: .74rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre;
  color: #cfe3d4;
}
.clone-form { display: flex; gap: .4rem; }
.clone-form input { padding: .5rem .6rem; font-size: .85rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding-bottom: .8rem; }
  .telemetry {
    position: fixed;
    inset: auto 0 0 0;
    z-index: 20;
    max-height: 82dvh;
    padding: .9rem .9rem calc(.9rem + env(safe-area-inset-bottom));
    background: #0d1410;
    border-top: 1px solid var(--line);
    border-radius: 18px 18px 0 0;
    box-shadow: 0 -18px 40px rgba(0, 0, 0, .6);
    transform: translateY(105%);
    transition: transform .25s ease;
    overflow: auto;
  }
  .telemetry.open { transform: translateY(0); }
  .transcript { min-height: 55dvh; }
  .composer { position: sticky; bottom: 0; background: var(--bg); padding-top: .3rem; }
  .composer textarea { font-size: 16px; }
  .clone-screen { height: 12rem; }
}
@media (min-width: 901px) {
  .telemetry { position: static; transform: none; }
}