* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Lato, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  min-height: 100vh;
}
a { color: #58a6ff; }
code { font-size: 0.9em; background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 4px; }

.header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid #30363d;
  background: linear-gradient(135deg, #161b22 0%, #1a2332 100%);
}
.back { font-size: 0.9rem; text-decoration: none; opacity: 0.85; }
.header h1 {
  font-family: Righteous, Lato, sans-serif;
  margin: 0.5rem 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 400;
}
.sub { margin: 0; opacity: 0.8; font-size: 0.95rem; }

.layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  grid-template-rows: auto auto;
  gap: 1rem;
  padding: 1.5rem 2rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}
.input-panel { grid-column: 1; grid-row: 1; }
.flow-panel { grid-column: 2; grid-row: 1 / 3; }
.output-panel { grid-column: 1; grid-row: 2; }

@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; }
  .flow-panel { grid-row: auto; }
}

.panel {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 10px;
  padding: 1.25rem;
}
.panel h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.75;
}

label { display: block; font-weight: 700; margin-bottom: 0.5rem; font-size: 0.9rem; }
textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #30363d;
  background: #0d1117;
  color: #e6edf3;
  font-family: inherit;
  font-size: 1rem;
  resize: vertical;
}

.samples { margin: 0.75rem 0; font-size: 0.9rem; }
.samples span { opacity: 0.7; margin-right: 0.5rem; }
.sample {
  margin: 0 0.25rem 0.25rem 0;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  border: 1px solid #388bfd;
  background: transparent;
  color: #58a6ff;
  cursor: pointer;
  font-size: 0.85rem;
}
.sample:hover { background: rgba(56, 139, 253, 0.15); }

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}
.mode { font-size: 0.9rem; cursor: pointer; }
.run {
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: 8px;
  background: linear-gradient(#2ea043, #238636);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  font-size: 1rem;
}
.run:disabled { opacity: 0.5; cursor: not-allowed; }

.status { font-size: 0.85rem; margin: 0.75rem 0 0; min-height: 1.2em; opacity: 0.85; }
.status.error { color: #f85149; }

.pipeline {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pipeline li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  border: 1px solid #30363d;
  font-size: 0.9rem;
  transition: background 0.2s, border-color 0.2s;
}
.pipeline li.pending { opacity: 0.45; }
.pipeline li.running {
  border-color: #d29922;
  background: rgba(210, 153, 34, 0.12);
}
.pipeline li.done {
  border-color: #3fb950;
  background: rgba(63, 185, 80, 0.1);
}
.step-num {
  display: inline-flex;
  width: 1.5rem;
  height: 1.5rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #30363d;
  font-size: 0.75rem;
  font-weight: 700;
}
.hitl { font-size: 0.7rem; opacity: 0.6; margin-left: auto; }
.flow-note { font-size: 0.8rem; opacity: 0.65; line-height: 1.45; margin: 1rem 0 0; }

.output {
  margin: 0;
  padding: 1rem;
  background: #0d1117;
  border-radius: 8px;
  border: 1px solid #30363d;
  font-size: 0.8rem;
  line-height: 1.45;
  overflow: auto;
  max-height: 420px;
  white-space: pre-wrap;
  word-break: break-word;
}

.footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.8rem;
  opacity: 0.5;
  border-top: 1px solid #30363d;
}