/* ADRA Console — app stylesheet. Adapted from Veta's shell (GitHub-dark workbench tokens),
   light overrides on [data-theme="light"]; a pre-paint script in the template sets the
   attribute before first paint. VIEWPORT-LOCKED: html,body 100% + body overflow hidden;
   a 2-pane grid fills the viewport; the LEFT chat pane is FIXED with its OWN internal
   scroll (the chat log scrolls, the pane does not grow the page); the RIGHT result pane
   scrolls internally. The page MUST NOT grow vertically beyond the viewport. */

/* ---------- tokens ---------- */
:root,
[data-theme="dark"] {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2330;
  --border: #30363d;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --good: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
  --acc: #bc8cff;                     /* purple accent — adversarial/critic lane (arch SVGs) */
  --accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);
  --good-soft: color-mix(in srgb, var(--good) 14%, transparent);
  --warn-soft: color-mix(in srgb, var(--warn) 16%, transparent);
  --bad-soft: color-mix(in srgb, var(--bad) 14%, transparent);
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #f6f8fa;
  --surface: #ffffff;
  --surface2: #eef1f5;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #656d76;
  --accent: #0969da;
  --good: #1a7f37;
  --warn: #9a6700;
  --bad: #cf222e;
  --acc: #8250df;                     /* purple accent — adversarial/critic lane (arch SVGs) */
  color-scheme: light;
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  height: 100vh;
  height: 100dvh;                     /* dvh with vh fallback */
  overflow: hidden;                   /* viewport-locked: nothing grows the page */
  display: flex;
  flex-direction: column;             /* header (auto) · main (flex:1) · footer (auto) */
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 Inter, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; }
.muted { color: var(--muted); }
.small { font-size: 11px; }
.hidden { display: none !important; }

/* ---------- shell grid: fixed chat pane | result pane ---------- */
main#shell {
  flex: 1 1 auto;                     /* fills between the full-width header and footer */
  display: grid;
  min-height: 0;
  gap: 10px;
  padding: 10px;
  grid-template-columns: clamp(320px, 30%, 460px) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  grid-template-areas: "chat result";
}
#pane-chat   { grid-area: chat; }
#pane-result { grid-area: result; }

.pane {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;                      /* lets children own their scroll, not the pane */
  min-width: 0;
  overflow: hidden;
}
.panehead {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  min-height: 38px;
}
.panebody { flex: 1 1 auto; min-height: 0; overflow: auto; }

/* ---------- small kit ---------- */
.iconbtn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 9px;
  cursor: pointer;
  font-size: 13px;
  line-height: 1.2;
}
.iconbtn:hover { border-color: var(--accent); }
.iconbtn.rec { background: var(--bad-soft); border-color: var(--bad); color: var(--bad); }
.iconbtn.on { border-color: var(--good); color: var(--good); }
a.iconbtn { text-decoration: none; display: inline-flex; align-items: center; }
a.iconbtn:hover { text-decoration: none; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  color: var(--muted);
  background: var(--surface2);
  white-space: nowrap;
}
.chip.good { color: var(--good); border-color: var(--good); background: var(--good-soft); }
.chip.warn { color: var(--warn); border-color: var(--warn); background: var(--warn-soft); }
.chip.bad  { color: var(--bad);  border-color: var(--bad);  background: var(--bad-soft); }
.chip.acc  { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--muted); }
.dot.ok  { background: var(--good); }
.dot.bad { background: var(--bad); }

.empty {
  color: var(--muted);
  font-size: 13px;
  padding: 18px 14px;
  text-align: center;
}
.empty-title { font-weight: 600; color: var(--text); margin-bottom: 4px; }

.sec-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  padding: 6px 2px;
}

.btn {
  background: var(--accent-soft); border: 1px solid var(--accent); color: var(--accent);
  border-radius: 8px; padding: 6px 14px; cursor: pointer; font-weight: 600; font-size: 13px;
}
.btn:hover { background: color-mix(in srgb, var(--accent) 24%, transparent); }
.btn:disabled { opacity: 0.5; cursor: default; }

.linklike {
  background: none; border: none; color: var(--accent);
  cursor: pointer; padding: 0; font-size: 12px;
}
.linklike:hover { text-decoration: underline; }

/* ---------- chat / control pane head ---------- */
.appbar {
  flex: 0 0 auto;                     /* full-width sticky app header (ADR-0016 §1) */
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  row-gap: 4px;
  gap: 8px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.appbar > * { min-width: 0; }
.brand-wrap { display: flex; flex-direction: column; }
.brand { font-weight: 700; font-size: 16px; letter-spacing: 0.5px; }
.brand-sub { font-size: 10px; color: var(--muted); margin-top: -2px; }
.appbar .grow { flex: 1 1 auto; }
.ver { font-size: 10px; color: var(--muted); }

.provider-select,
.prop-select {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: 12px;
  padding: 4px 6px;
  max-width: 124px;
  cursor: pointer;
}
.provider-select:focus,
.prop-select:focus { outline: none; border-color: var(--accent); }

/* ---------- chat log (scrolls internally) ---------- */
#chat-log {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.msg { display: flex; }
.msg.user { justify-content: flex-end; }
.msg .bubble {
  max-width: 92%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 11px;
  background: var(--surface2);
  font-size: 13px;
  overflow-wrap: anywhere;
}
.msg.user .bubble { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.msg.assistant .bubble { width: 92%; }

.md p { margin: 0 0 6px; }
.md p:last-child { margin-bottom: 0; }
.md code { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; font-size: 12px; }

.warnchip { color: var(--warn); border-color: var(--warn); background: var(--warn-soft); }
.errchip  { color: var(--bad);  border-color: var(--bad);  background: var(--bad-soft); }

/* empty-state how-to mini card */
.chat-empty { display: flex; }
.mini-card {
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: var(--surface2);
  padding: 10px 12px;
  font-size: 12px;
  color: var(--muted);
  width: 100%;
}
.mini-card .mini-title { font-weight: 600; color: var(--text); margin-bottom: 4px; }
.mini-card .mini-steps { margin: 0 0 6px; padding-left: 18px; }
.mini-card .mini-steps li { margin-bottom: 3px; }

/* ---------- stage timeline (the adversarial loop, live) ---------- */
.tl {
  flex: 0 0 auto;
  border-top: 1px solid var(--border);
  padding: 6px 12px;
  max-height: 168px;
  overflow-y: auto;
  font-size: 12px;
  background: var(--surface);
}
.tl-row { display: flex; align-items: baseline; gap: 8px; padding: 2px 0; }
.tl-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); flex: 0 0 auto; align-self: center;
}
.tl-row.st-started  .tl-dot { background: var(--accent); animation: tlpulse 1.1s ease-in-out infinite; }
.tl-row.st-done     .tl-dot { background: var(--good); }
.tl-row.st-fallback .tl-dot { background: var(--warn); }
.tl-row.st-error    .tl-dot { background: var(--bad); }
.tl-name { font-weight: 600; white-space: nowrap; text-transform: capitalize; }
.tl-badge { font-size: 10px; color: var(--accent); white-space: nowrap; }
.tl-note { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@keyframes tlpulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ---------- example launcher chips ---------- */
.chips {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 12px 0;
  max-height: 130px;
  overflow-y: auto;
}
.chips:empty { display: none; }
.chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 11px;
  padding: 3px 10px;
  cursor: pointer;
  white-space: nowrap;
  max-width: 100%;
}
.chip-btn:hover { border-color: var(--accent); color: var(--accent); }
.chip-btn .cb-sk { color: var(--muted); font-size: 10px; }
.chip-btn .cb-label { overflow: hidden; text-overflow: ellipsis; }
.chip-btn.expect-escalate .cb-sk { color: var(--warn); }
.chip-btn.expect-accepted .cb-sk { color: var(--good); }
.chip-btn.gh-chip { border-color: var(--accent); color: var(--accent); }

/* ---------- connection-first gate (connect → target → case) ---------- */
.gate { flex: 0 0 auto; padding: 8px 12px 0; }
.gate.hidden { display: none; }
.gate-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface2);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.gate-card.connected { border-color: color-mix(in srgb, var(--good) 40%, var(--border)); }
.gate-title { font-weight: 600; font-size: 13px; }
.gate-sub, .gate-note { font-size: 11.5px; color: var(--muted); }
.gate-note {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 6px 6px 0;
  padding: 5px 8px;
}
.gate-row { display: flex; gap: 6px; }
.gate-field { display: flex; flex-direction: column; gap: 3px; }
.gate-lbl { font-size: 10px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted); }
.gate-in {
  flex: 1 1 auto;
  min-width: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 6px 8px;
  font: inherit;
  font-size: 12px;
}
.gate-in:focus { outline: none; border-color: var(--accent); }
.gate .prop-select { max-width: none; width: 100%; }
.gate .btn { align-self: flex-start; }
.gate-err {
  font-size: 11.5px;
  color: var(--bad);
  background: var(--bad-soft);
  border: 1px solid var(--bad);
  border-radius: 6px;
  padding: 5px 8px;
  overflow-wrap: anywhere;
}
.gate-err.hidden { display: none; }
.composer-hint {
  flex: 0 0 auto;
  padding: 0 12px 6px;
  font-size: 11px;
  color: var(--muted);
}
.composer-hint.hidden { display: none; }

/* ---------- input row ---------- */
.chat-input-row {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}
#chat-input {
  flex: 1 1 auto;
  resize: none;
  min-height: 64px;
  max-height: 160px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
}
#chat-input:focus { outline: none; border-color: var(--accent); }
#voice-meter {
  flex: 0 0 auto;
  height: 26px;
  display: block;
  margin: 0 12px 6px;
  width: calc(100% - 24px);
  border-radius: 6px;
  background: var(--surface2);
}

/* ---------- skill selector row ---------- */
.skill-row {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px 8px;
}
.skill-lbl {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.4px; color: var(--muted);
}
.skill-select {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: 12px;
  padding: 3px 6px;
  cursor: pointer;
}
.skill-select:focus { outline: none; border-color: var(--accent); }

/* ---------- compact GitHub PR form ---------- */
.gh-form {
  flex: 0 0 auto;
  border-top: 1px solid var(--border);
  padding: 8px 12px;
}
.gh-form > summary {
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}
.gh-form > summary::-webkit-details-marker { display: none; }
.gh-form > summary::before { content: "▸ "; color: var(--muted); }
.gh-form[open] > summary::before { content: "▾ "; }
.gh-body { display: flex; flex-direction: column; gap: 6px; padding-top: 8px; }
.gh-hint { font-size: 11px; margin: 0; }
.gh-in, .gh-num {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 6px 8px;
  font: inherit;
  font-size: 12px;
}
.gh-in:focus, .gh-num:focus, .gh-sel:focus { outline: none; border-color: var(--accent); }
.gh-row { display: flex; gap: 6px; }
.gh-num { flex: 1 1 auto; min-width: 0; }
.gh-sel {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: 12px;
  padding: 3px 6px;
  cursor: pointer;
}
.gh-btn { align-self: flex-start; }

/* ---------- recent runs rail (fixed height, scrollable) ---------- */
.chat-recent {
  flex: 0 0 auto;
  height: 148px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-top: 1px solid var(--border);
  padding: 4px 12px 8px;
}
.chat-recent .sec-head { flex: 0 0 auto; }
.chat-recent .grow { flex: 1 1 auto; }
.rail { flex: 1 1 auto; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.rail:empty::after {
  content: attr(data-empty);
  color: var(--muted); font-size: 12px; padding: 8px 2px;
}
.rail-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface2);
  padding: 6px 9px;
  cursor: pointer;
  font-size: 12px;
}
.rail-card:hover { border-color: var(--accent); }
.rail-card .rc-title {
  font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.rail-card .rc-meta { display: flex; gap: 6px; align-items: center; margin-top: 3px; color: var(--muted); font-size: 11px; }

/* ---------- result pane ---------- */
.res-hero { padding: 32px 22px; max-width: 560px; margin: 0 auto; }
.res-hero .empty-title { font-size: 18px; }
.result { padding: 14px 16px; }
.reshead {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.badge.accepted { color: var(--good); border-color: var(--good); background: var(--good-soft); }
.badge.escalate { color: var(--bad);  border-color: var(--bad);  background: var(--bad-soft); }
.res-meta { font-size: 12px; overflow-wrap: anywhere; }
.res-section { margin-bottom: 18px; }

/* result timeline (the adversarial loop, finished) */
.rt { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.rt .step {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--surface2);
  padding: 7px 10px;
}
.rt .step.plan     { border-left-color: var(--accent); }
.rt .step.ground   { border-left-color: var(--accent); }
.rt .step.generate { border-left-color: var(--muted); }
.rt .step.critic   { border-left-color: var(--warn); }
.rt .step.revise   { border-left-color: var(--warn); }
.rt .step.decide   { border-left-color: var(--good); }
.rt .step .st-node {
  flex: 0 0 auto;
  font-weight: 700;
  font-size: 12px;
  text-transform: capitalize;
  min-width: 78px;
}
.rt .step .st-detail { flex: 1 1 auto; min-width: 0; }
.rt .step .st-ln { font-size: 12px; }
.rt .step .st-mdl {
  display: inline-block;
  margin-top: 3px;
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0 7px;
}

/* findings */
.findings { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.finding {
  border: 1px solid var(--border);
  border-left: 3px solid var(--bad);
  border-radius: 8px;
  background: var(--surface2);
  padding: 8px 10px;
}
.finding.MAJOR   { border-left-color: var(--warn); }
.finding.MINOR   { border-left-color: var(--accent); }
.finding .f-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.finding .f-cat { font-weight: 600; font-size: 12px; }
.finding .f-msg { margin-top: 5px; font-size: 12.5px; }
.finding .f-ev {
  margin-top: 5px;
  font-size: 11px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  overflow-wrap: anywhere;
}

/* artifacts */
.artifacts { display: flex; flex-direction: column; gap: 10px; }
.artifact { border: 1px solid var(--border); border-radius: 8px; background: var(--surface2); overflow: hidden; }
.artifact .a-name {
  font-weight: 600;
  font-size: 12px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.artifact pre {
  margin: 0;
  padding: 10px;
  overflow-x: auto;
  font-size: 12px;
  font-family: Consolas, "SFMono-Regular", Menlo, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 360px;
  overflow-y: auto;
}

.res-error {
  margin: 16px;
  border: 1px solid var(--bad);
  border-left: 3px solid var(--bad);
  background: var(--bad-soft);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--bad);
  font-size: 13px;
  overflow-wrap: anywhere;
}

/* ---------- modals (system + help) ---------- */
.modal[hidden] { display: none !important; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 62%, transparent);
  backdrop-filter: blur(2px);
  display: grid;
  place-items: center;
  padding: 18px;
}
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: min(920px, 96vw);
  max-height: min(740px, 92dvh);
  display: flex;
  flex-direction: column;
  min-height: 0;
  outline: none;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
}
.modal-box.modal-narrow { width: min(520px, 94vw); max-height: min(640px, 88dvh); }
.modal-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.modal-head .grow { flex: 1 1 auto; }
.modal-title { font-weight: 700; font-size: 14px; }
.modal-tabs {
  flex: 0 0 auto;
  display: flex;
  gap: 2px;
  padding: 6px 10px 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.mtab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
  white-space: nowrap;
}
.mtab:hover { color: var(--text); }
.mtab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 12px 14px;
  font-size: 13px;
}
.modal-foot {
  flex: 0 0 auto;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 8px 14px;
  border-top: 1px solid var(--border);
}
.modal-foot:empty { display: none; }

/* architecture tab content (inline themed SVG + text block) */
.arch-host { display: flex; flex-direction: column; min-width: 0; }
.arch-svg { margin: 2px 0 8px; }
.arch-svg svg { width: 100%; height: auto; display: block; }
.arch-caption {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
}
.arch-caption:empty { display: none; }
.arch-text p { margin: 0 0 7px; font-size: 12.5px; }
.arch-text p:last-child { margin-bottom: 0; }
.arch-text code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 4px;
  font-size: 11.5px;
}
.arch-text b { color: var(--text); }
.arch-text .eq {
  display: inline-block;
  font-family: "Cambria Math", Georgia, serif;
  font-style: italic;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 5px;
}

/* segmented header control (System | Architecture) */
.seg {
  flex: 0 0 auto;
  display: flex;
  gap: 4px;
  padding: 8px 12px 4px;
}
.seg-btn {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  padding: 4px 12px;
  cursor: pointer;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.active { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }
.seg-btn:disabled { opacity: 0.5; cursor: default; }

/* system-content kit (rows / subheads / chips / table) — shared shell classes */
.sys-rows { display: flex; flex-direction: column; gap: 2px; }
.sys-row {
  display: grid;
  grid-template-columns: minmax(120px, 38%) minmax(0, 1fr);
  gap: 10px;
  padding: 5px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
}
.sys-key { color: var(--muted); font-size: 12px; }
.sys-val { font-size: 12.5px; overflow-wrap: anywhere; }
.sys-subhead {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
  margin: 12px 0 4px;
}
.sys-chips { display: flex; flex-wrap: wrap; gap: 5px; margin: 4px 0 6px; }
.sys-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.sys-table th, .sys-table td {
  text-align: left;
  padding: 5px 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 45%, transparent);
}
.sys-table th { color: var(--muted); font-weight: 600; }

/* help modal */
.help-body .help-case { margin-bottom: 12px; }
.help-case-title { font-weight: 600; margin-bottom: 2px; }
.help-case-text { color: var(--muted); font-size: 12px; }
.help-hint {
  border-top: 1px solid var(--border);
  padding-top: 8px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

/* ---------- footer (rendered into a fixed strip on the result pane head area) ---------- */
/* ADR-0016 footer is the last child of the result pane body via JS; styled below. */
.appfoot {
  flex: 0 0 auto;                     /* full-width app footer (ADR-0016 §2) */
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 6px 16px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--muted);
  background: var(--surface);
}
.appfoot .foot-author { color: var(--text); font-weight: 600; }
.appfoot .grow { flex: 1 1 auto; }
.appfoot .foot-links { display: flex; gap: 8px; }
.appfoot a { color: var(--muted); }
.appfoot a:hover { color: var(--accent); }
.foot-meta { text-align: center; }
@media (max-width: 980px) { .foot-meta { display: none; } }

/* ---------- mobile tab bar (<1000px) ---------- */
#tabbar { display: none; }
@media (max-width: 1000px) {
  main#shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    grid-template-areas: "view";
    padding-bottom: 56px;
  }
  .pane { display: none; grid-area: view; }
  body[data-tab="chat"] #pane-chat { display: flex; }
  body[data-tab="result"] #pane-result { display: flex; }
  #tabbar {
    display: flex;
    position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--surface); border-top: 1px solid var(--border);
    z-index: 10;
  }
  #tabbar .tab {
    flex: 1 1 0; background: none; border: none; padding: 12px 0;
    color: var(--muted); cursor: pointer; font-size: 13px;
  }
  #tabbar .tab.active { color: var(--accent); font-weight: 600; box-shadow: inset 0 2px 0 var(--accent); }
  .modal { padding: 10px; }
  .modal-box { width: 96vw; max-height: 92dvh; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .tl-row.st-started .tl-dot { animation: none; opacity: 1; }
  * { scroll-behavior: auto !important; }
}