/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #21253a;
  --border: #2e3350;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --error: #ef4444;
  --warn: #f59e0b;
  --text: #e2e8f0;
  --text-muted: #7c85a4;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html { font-size: 15px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 0.5rem; }
.logo-icon { font-size: 1.4rem; }
.logo-text { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; color: var(--accent-hover); }
.logo-sub { font-size: 0.75rem; color: var(--text-muted); margin-left: 0.25rem; }
.header-badges { display: flex; gap: 0.5rem; }
.badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-gpu  { color: #a78bfa; border-color: #4c3f8a; background: #1e1630; }
.badge-local { color: #34d399; border-color: #065f46; background: #052e1a; }

/* ── Main layout ─────────────────────────────────────────────────────────── */
main {
  flex: 1;
  max-width: 1400px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}
@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
}

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
}
.card:last-child { margin-bottom: 0; }
.card-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.card-title-row .card-title { margin-bottom: 0; }
.card-logs { display: flex; flex-direction: column; }

/* ── Fields ──────────────────────────────────────────────────────────────── */
.field { margin-bottom: 0.85rem; }
.field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.field-inline { display: flex; align-items: center; gap: 0.75rem; }
.field-inline label { margin-bottom: 0; white-space: nowrap; }

select, textarea, input[type="number"] {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}
select:focus, textarea:focus, input[type="number"]:focus {
  border-color: var(--accent);
}
textarea { resize: vertical; }
input[type="number"] { width: 80px; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:not(:disabled):hover { background: var(--accent-hover); }
.btn-success  { background: #166534; color: #bbf7d0; border: 1px solid #15803d; }
.btn-success:not(:disabled):hover { background: #14532d; }
.btn-ghost    { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:not(:disabled):hover { background: var(--surface2); color: var(--text); }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.78rem; }
.action-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1rem; }

/* ── Progress ────────────────────────────────────────────────────────────── */
.progress-wrap { margin-bottom: 0.85rem; }
.progress-track {
  background: var(--surface2);
  border-radius: 999px;
  height: 7px;
  overflow: hidden;
  margin-bottom: 0.4rem;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius: 999px;
  width: 0%;
  transition: width 0.25s ease;
}
.progress-row { display: flex; justify-content: space-between; align-items: center; }
.progress-label { font-size: 0.78rem; color: var(--text-muted); flex: 1; }
.progress-pct { font-size: 0.78rem; font-weight: 700; color: var(--accent-hover); font-family: var(--font-mono); }
.hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.6rem; }

/* ── Stats bar ────────────────────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  background: #0e1120;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.stats-bar[hidden] { display: none; }
.stat { color: var(--text-muted); }
.stat b { color: var(--accent-hover); font-weight: 700; }

/* ── Token stream ─────────────────────────────────────────────────────────── */
.token-stream {
  background: #080a10;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #a3e635;
  overflow: auto;
  max-height: 160px;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

/* ── Examples ────────────────────────────────────────────────────────────── */
.examples { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; margin-top: 0.25rem; }
.examples-label { font-size: 0.75rem; color: var(--text-muted); }
.example-chip {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.75rem;
  padding: 0.2rem 0.65rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.example-chip:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Logs ────────────────────────────────────────────────────────────────── */
.logs {
  background: #0a0c14;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  height: 320px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.7;
}
.log-entry { display: flex; gap: 0.6rem; }
.log-time { color: #3d4466; flex-shrink: 0; }
.log-info    { color: var(--text-muted); }
.log-step    { color: #7c85a4; font-weight: 700; margin-top: 0.3rem; }
.log-thought { color: #a78bfa; }
.log-action  { color: #60a5fa; }
.log-result  { color: #34d399; }
.log-success { color: var(--success); }
.log-error   { color: var(--error); }
.log-warn    { color: var(--warn); }
.log-stream  { color: #a3e635; font-style: italic; opacity: 0.8; }

/* ── Verdict ─────────────────────────────────────────────────────────────── */
.verdict {
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
  border: 1px solid;
}
.verdict-pass { background: #052e1a; border-color: #15803d; }
.verdict-fail { background: #2a0a0a; border-color: #7f1d1d; }
.verdict-label { font-size: 1.1rem; font-weight: 800; letter-spacing: -0.01em; }
.verdict-pass .verdict-label { color: var(--success); }
.verdict-fail .verdict-label { color: var(--error); }
.verdict-reason { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.2rem; }

/* ── State view ──────────────────────────────────────────────────────────── */
.state-view {
  background: #0a0c14;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #93c5fd;
  overflow: auto;
  max-height: 240px;
  white-space: pre;
}

/* ── Actions list ────────────────────────────────────────────────────────── */
.actions-list { display: flex; flex-direction: column; gap: 0.5rem; }
.action-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
}
.action-name { font-family: var(--font-mono); font-size: 0.82rem; color: #60a5fa; font-weight: 600; }
.action-desc { font-size: 0.77rem; color: var(--text-muted); margin-top: 0.15rem; }

/* ── Stream badge ────────────────────────────────────────────────────────── */
.stream-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid;
}
.stream-idle { color: #4b5563; border-color: #374151; background: #111827; }
.stream-live { color: #a3e635; border-color: #365314; background: #1a2e05; animation: pulse 1s infinite; }
.stream-done { color: #34d399; border-color: #065f46; background: #052e1a; }
@keyframes pulse { 0%,100% { opacity:1 } 50% { opacity:0.55 } }

/* ── Step counter ────────────────────────────────────────────────────────── */
.step-counter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-hover);
  font-weight: 700;
}

/* ── Agent trace ─────────────────────────────────────────────────────────── */
.trace { display: flex; flex-direction: column; gap: 0.65rem; max-height: 480px; overflow-y: auto; }
.trace-empty { color: var(--text-muted); font-size: 0.82rem; text-align: center; padding: 2rem 0; }

.trace-card {
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #13161f;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.2s;
}
.trace-pending   { border-color: #2e3350; }
.trace-done      { border-color: #14532d; background: #071a0f; }
.trace-error     { border-color: #7f1d1d; background: #1c0707; }
.trace-final-pass { border-color: #22c55e; background: #052e1a; box-shadow: 0 0 0 1px #22c55e40; }
.trace-final-fail { border-color: #ef4444; background: #2a0a0a; box-shadow: 0 0 0 1px #ef444440; }

.trace-step-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.trace-section {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
  font-size: 0.82rem;
}
.trace-section:last-child { margin-bottom: 0; }
.trace-icon { flex-shrink: 0; }
.trace-section-label {
  flex-shrink: 0;
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  width: 52px;
}
.trace-section-body { color: var(--text); flex: 1; line-height: 1.5; }
.trace-action-name {
  background: #1e1630;
  color: #a78bfa;
  border: 1px solid #4c3f8a;
  border-radius: 4px;
  padding: 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}
.trace-params {
  color: #60a5fa;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  word-break: break-all;
  flex: 1;
}
.trace-result-body {
  color: #34d399;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  word-break: break-all;
}

/* ── State flash ─────────────────────────────────────────────────────────── */
@keyframes stateFlash { 0% { border-color: #22c55e; } 100% { border-color: var(--border); } }
.state-flash { animation: stateFlash 0.6s ease-out; }

/* ── Harness Tests ───────────────────────────────────────────────────────── */
.test-summary {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
}
.test-summary[hidden] { display: none; }
.test-summary-pass { background: #052e1a; color: #22c55e; border: 1px solid #14532d; }
.test-summary-fail { background: #2a0a0a; color: #ef4444; border: 1px solid #7f1d1d; }

.test-panel { max-height: 480px; overflow-y: auto; }
.test-results { display: flex; flex-direction: column; gap: 0; }

.test-group-header {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-hover);
  padding: 0.6rem 0 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.25rem;
  margin-top: 0.25rem;
}
.test-group-header:first-child { margin-top: 0; }

.test-row {
  display: grid;
  grid-template-columns: 1.2rem 1fr auto;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.3rem 0.2rem;
  border-radius: 4px;
  font-size: 0.78rem;
  border-bottom: 1px solid #1a1d2700;
}
.test-row:hover { background: var(--surface2); }
.test-icon { font-weight: 900; text-align: center; }
.test-pass .test-icon { color: var(--success); }
.test-fail .test-icon { color: var(--error); }
.test-name { color: var(--text); }
.test-fail .test-name { color: #fca5a5; }
.test-detail {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: right;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}
footer a { color: var(--accent-hover); text-decoration: none; }
footer a:hover { text-decoration: underline; }