:root {
  --bg: #f3f0ea;
  --panel: #fffdf8;
  --ink: #1c1917;
  --muted: #78716c;
  --line: #d6d3d1;
  --accent: #0f766e;
  --accent-ink: #f0fdfa;
  --danger: #b91c1c;
  --mono: "Cascadia Mono", "Consolas", ui-monospace, monospace;
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #ccfbf1 0, transparent 40%),
    linear-gradient(180deg, #f8f5ef, var(--bg));
  min-height: 100vh;
}
a { color: var(--accent); }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
}
.top strong { margin-right: 0.75rem; }
.auth {
  max-width: 26rem;
  margin: 10vh auto;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.grid {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem 1.2rem;
}
.panel.wide { grid-column: 1 / -1; }
.panel h2 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.panel h3 { margin: 1rem 0 0.5rem; font-size: 0.95rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.error { color: var(--danger); }
.status { min-height: 1.2em; font-size: 0.9rem; color: var(--muted); }
.stack { display: grid; gap: 0.7rem; }
.row { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: end; }
.row.tight { align-items: stretch; }
.row .grow { flex: 1 1 12rem; }
label { display: grid; gap: 0.3rem; font-size: 0.9rem; }
input, select, button, textarea {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}
button {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  cursor: pointer;
}
button.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
button.danger {
  color: var(--danger);
  border-color: #fecaca;
}
button.tiny {
  padding: 0.25rem 0.45rem;
  font-size: 0.8rem;
}
button:disabled { opacity: 0.5; cursor: not-allowed; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.4rem; }
.list li {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
  background: #fff;
}
.list li.active { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.list li .meta { color: var(--muted); font-size: 0.85rem; }
.task-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.pair-box {
  display: grid;
  gap: 0.5rem;
}
.pair-box .mono {
  margin: 0;
  user-select: all;
}
.steps-field {
  width: 5.5rem;
  flex: 0 0 auto;
}
.muted.tight {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
}
.mono {
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-all;
  background: #1c1917;
  color: #f5f5f4;
  padding: 0.75rem;
  border-radius: 8px;
}
.log { min-height: 16rem; max-height: 28rem; overflow: auto; }
.split {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(12rem, 0.9fr) minmax(16rem, 1.4fr);
}
@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
}