/* Shared shell for vibe-coding-a2a/lab/ — dark theme, monospace, fixed chrome.
   Mirrors the IAI deck palette (electric-lime accent, dark surface) and IBM Plex Mono. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0a;
  --fg: #f4f1ea;
  --accent: #d4ff00;
  --muted: rgba(244, 241, 234, 0.55);
  --subtle: rgba(244, 241, 234, 0.08);
  --surface: rgba(244, 241, 234, 0.04);
  --border: rgba(244, 241, 234, 0.18);
  --discord: #ff3b30;
  --success: #d4ff00;
  --ok: #6affc8;
  --warn: #ff9d4d;
  --link: #7fa9ff;
  --pink: #ff6dd5;
  --font-body: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.5;
}

html { scrollbar-width: thin; scrollbar-color: var(--border) var(--bg); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 150ms; }
a:hover { border-bottom-color: var(--accent); }

button, input, textarea { font-family: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--bg); }

/* Top-left chrome — present on every lab page. */
.chrome {
  position: fixed;
  left: 1.5rem;
  top: 1.25rem;
  z-index: 50;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.chrome a {
  color: var(--muted);
  border-bottom: 1px solid var(--subtle);
}
.chrome a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.chrome .sep { margin: 0 0.6rem; opacity: 0.5; }
.chrome .name { color: var(--fg); }

/* Page-shell helpers. */
.lab-frame {
  max-width: 1280px;
  margin: 0 auto;
  padding: 5rem 1.75rem 4rem;
}

.lab-head {
  margin-bottom: 2.5rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}
.lab-head .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.85rem;
}
.lab-head .eyebrow .dot { color: var(--accent); margin-right: 0.5rem; }
.lab-head h1 {
  font-weight: 500;
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 1rem;
}
.lab-head .lede {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.55;
}

.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.discord { color: var(--discord); }
.ok-c { color: var(--ok); }
.warn-c { color: var(--warn); }

/* Buttons. */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: border-color 150ms, color 150ms, background 150ms;
}
.btn:hover { color: var(--accent); border-color: var(--accent); }
.btn.primary {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}
.btn.primary:hover { background: var(--fg); border-color: var(--fg); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:disabled:hover { color: var(--fg); border-color: var(--border); background: var(--surface); }

/* Terminal block. */
.terminal {
  background: #050505;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: rgba(244,241,234,0.02);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.terminal-bar .dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 0.5rem;
  animation: blink 1.4s steps(2) infinite;
}
.terminal-body {
  padding: 1rem 1.1rem 1.2rem;
  overflow: auto;
  max-height: 60vh;
  color: var(--fg);
}
.t-line { white-space: pre-wrap; word-break: break-word; }
.t-line.cmd { color: var(--accent); }
.t-line.ok  { color: var(--ok); }
.t-line.err { color: var(--discord); }
.t-line.note { color: var(--muted); font-style: italic; }
.t-line.dim { color: var(--muted); }
.t-json {
  display: block;
  margin: 0.4rem 0 0.6rem;
  padding: 0.65rem 0.85rem;
  background: rgba(244,241,234,0.03);
  border-left: 2px solid var(--accent);
  color: var(--fg);
  white-space: pre;
  overflow-x: auto;
  font-size: 0.78rem;
}
.t-cursor::after {
  content: "▌";
  color: var(--accent);
  animation: blink 1.1s steps(2) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* Card grid (used by lab index + agent-card-fetch). */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.lab-card {
  background: var(--bg);
  padding: 1.75rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid transparent;
  transition: background 180ms;
}
.lab-card:hover { background: rgba(212,255,0,0.04); border-bottom-color: transparent; }
.lab-card .num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 0.85rem;
  text-transform: uppercase;
}
.lab-card .name {
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: -0.015em;
  margin-bottom: 0.5rem;
  line-height: 1.15;
}
.lab-card .desc {
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.95rem;
  margin-bottom: 1.4rem;
  flex-grow: 1;
}
.lab-card .foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.lab-card .foot .arrow {
  color: var(--accent);
  font-size: 0.85rem;
  transition: transform 200ms;
}
.lab-card:hover .foot .arrow { transform: translateX(4px); }

/* Two-pane layout (used by handshake + serve). */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.split > .pane { background: var(--bg); padding: 0; min-height: 0; }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
}

.pane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.95rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(244,241,234,0.02);
}
.pane-head .live-tag { color: var(--accent); }
.pane-body {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  padding: 0.9rem 1rem;
  overflow: auto;
  max-height: 56vh;
  color: var(--fg);
}

/* Score chip + check rows. */
.score-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0.55rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
}
.score-chip .big {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.score-chip.warn .big { color: var(--warn); }
.score-chip.bad .big { color: var(--discord); }

.checks {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}
.checks li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 0.85rem;
  padding: 0.7rem 0.25rem 0.7rem 0.5rem;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
  font-size: 0.92rem;
}
.checks li .mark {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  text-align: center;
}
.checks li.pass .mark { color: var(--ok); }
.checks li.fail .mark { color: var(--discord); }
.checks li.pending .mark { color: var(--muted); }
.checks li .body { display: flex; flex-direction: column; gap: 0.15rem; }
.checks li .label { font-weight: 500; }
.checks li .hint { color: var(--muted); font-size: 0.8rem; font-family: var(--font-mono); letter-spacing: 0.03em; }

/* Url input row. */
.url-row {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  background: var(--surface);
}
.url-row input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--fg);
  outline: none;
  min-width: 0;
}
.url-row input::placeholder { color: var(--muted); }
.url-row button {
  border-left: 1px solid var(--border);
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0 1.4rem;
  cursor: pointer;
  border-top: 0; border-right: 0; border-bottom: 0;
}
.url-row button:hover { background: var(--accent); color: var(--bg); }

/* Tabs (used by serve-a2a). */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
}
.tab-btn {
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.85rem 1.2rem;
  cursor: pointer;
  transition: color 150ms, border-color 150ms;
}
.tab-btn:hover { color: var(--fg); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

pre.code-block {
  position: relative;
  margin: 0;
  padding: 1.2rem 1.2rem 1.2rem 1.2rem;
  background: #050505;
  border: 1px solid var(--border);
  border-top: 0;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}
pre.code-block .kw { color: var(--pink); }
pre.code-block .str { color: var(--ok); }
pre.code-block .com { color: var(--muted); font-style: italic; }
pre.code-block .fn { color: var(--accent); }

.copy-btn {
  position: absolute;
  top: 0.7rem;
  right: 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }

/* Audit wall (conformance). */
.audit-wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 1.5rem;
}
.cell {
  background: var(--bg);
  padding: 1.2rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 130px;
  position: relative;
  transition: background 200ms;
}
.cell .n {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.cell .nm {
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.25;
  flex-grow: 1;
}
.cell .verdict {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.cell.pass { background: rgba(106,255,200,0.06); }
.cell.pass .verdict { color: var(--ok); }
.cell.fail { background: rgba(255,59,48,0.05); }
.cell.fail .verdict { color: var(--discord); }
.cell.pending .verdict { color: var(--muted); }
.cell.pending { background: var(--surface); }

/* Layout helpers. */
.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
  padding-top: 0.5rem;
}
.section-head h2 {
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.section-head .caption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.callout {
  border-left: 2px solid var(--accent);
  padding: 0.85rem 1.1rem;
  background: rgba(212,255,0,0.04);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--fg);
  margin: 1.5rem 0;
}
.callout strong { color: var(--accent); font-weight: 500; }