:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
  --panel: #161b22;
  --panel-2: #1c232c;
  --border: #30363d;
  --opus: #a371f7;
  --sonnet: #58a6ff;
  --haiku: #3fb950;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 16px; line-height: 1.55;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header h1 {
  font-size: 1.85rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 70ch;
}

.lede code {
  background: var(--panel);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
}

a { color: var(--accent); }

.label {
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.block {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

input[type="text"], input[type="password"], input[type="number"], textarea {
  font: inherit;
  font-size: 0.95rem;
  padding: 0.55rem 0.75rem;
  background: var(--panel-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

textarea {
  min-height: 90px;
  resize: vertical;
}

input[type="number"] { font-variant-numeric: tabular-nums; }

.key-row {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: end;
  gap: 1rem;
  flex-wrap: wrap;
}

.key-row label { flex: 1; min-width: 280px; display: flex; flex-direction: column; gap: 0.4rem; }
.key-status { font-size: 0.85rem; color: var(--muted); padding-bottom: 0.55rem; }
.key-status.ok { color: var(--good); }

.prompt-row {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.prompt-row > .block { margin-bottom: 0.75rem; }

.advanced { margin-top: 0.6rem; margin-bottom: 0.6rem; }
.advanced summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  user-select: none;
  padding: 0.3rem 0;
}
.advanced-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0.8rem;
  margin-top: 0.5rem;
}
@media (max-width: 720px) {
  .advanced-grid { grid-template-columns: 1fr; }
}

.actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

button {
  font: inherit;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0d1117;
  border-radius: 6px;
  cursor: pointer;
}

button:hover { filter: brightness(1.1); }
button[disabled] { opacity: 0.5; cursor: not-allowed; }

button.ghost {
  background: var(--panel-2);
  color: var(--accent);
  border-color: var(--border);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}

.model-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 200px;
}

.model-card[data-model="claude-opus-4-7"] { border-top: 3px solid var(--opus); }
.model-card[data-model="claude-sonnet-4-6"] { border-top: 3px solid var(--sonnet); }
.model-card[data-model^="claude-haiku"] { border-top: 3px solid var(--haiku); }

.model-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.model-name { font-weight: 600; font-size: 1.02rem; }
.model-tier { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.model-stats {
  display: flex;
  gap: 0.8rem;
  font-size: 0.8rem;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
  flex-wrap: wrap;
}

.model-stat-label { color: rgba(139, 148, 158, 0.7); }

.model-body {
  flex: 1;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.93rem;
  line-height: 1.5;
  background: var(--panel-2);
  padding: 0.7rem 0.85rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  max-height: 480px;
  overflow-y: auto;
}

.model-body.placeholder { color: var(--muted); font-style: italic; }
.model-body.error { color: var(--bad); }

.spinner::after {
  content: "…";
  display: inline-block;
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
  0%   { content: ""; }
  25%  { content: "."; }
  50%  { content: ".."; }
  75%  { content: "..."; }
  100% { content: ""; }
}

.security {
  margin-top: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.5rem;
}

.security h2 { font-size: 1.05rem; margin: 0 0 0.5rem; }
.security ul { margin: 0; padding-left: 1.25rem; color: var(--muted); font-size: 0.92rem; }
.security li { margin: 0.4rem 0; }
.security code, footer code {
  background: var(--panel-2);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
}

footer {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}