:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1c2430;
  --muted: #6b7482;
  --accent: #2f5bd3;
  --accent-soft: #eaf0fd;
  --error: #c62828;
  --error-soft: #fdecec;
  --ok: #2e7d32;
  --warn: #b26a00;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 6px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 17px; margin: 0; font-weight: 600; }

.status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  padding: 8px 24px;
  font-size: 12px;
  color: var(--muted);
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.status b { font-weight: 600; color: var(--text); margin-right: 4px; }
.status span span { font-family: var(--mono); word-break: break-all; }
.status .warn { color: var(--warn); }

.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 16px 24px 0;
  padding: 10px 14px;
  border-radius: var(--radius);
  white-space: pre-wrap;
}
.banner.error { background: var(--error-soft); color: var(--error); border: 1px solid #f3c4c4; }
.banner.info { background: var(--accent-soft); color: var(--accent); border: 1px solid #c9d7f7; }

.welcome { max-width: 520px; margin: 80px auto; text-align: center; }
.welcome h2 { font-weight: 600; }

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  padding: 16px 24px;
  height: calc(100vh - 100px);
}

.sidebar, .detail {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
}
.sidebar { padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.detail { padding: 20px 24px; }

input, select, textarea {
  width: 100%;
  padding: 7px 9px;
  font: inherit;
  color: inherit;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea.mono { font-family: var(--mono); font-size: 12px; resize: vertical; }

.btn {
  padding: 6px 14px;
  font: inherit;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  cursor: pointer;
}
.btn:hover { background: var(--bg); }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #2549ad; }
.btn.link { border: none; background: none; color: var(--accent); padding: 4px 0; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

.tool-list { display: flex; flex-direction: column; gap: 12px; }
.group-title {
  display: flex;
  justify-content: space-between;
  margin: 4px 2px 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.group-title .count { font-weight: 500; }

.tool-card {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  margin-bottom: 4px;
  font: inherit;
  color: inherit;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}
.tool-card:hover { border-color: #c5cbd5; }
.tool-card.active { border-color: var(--accent); background: var(--accent-soft); }
.tool-name { font-family: var(--mono); font-size: 13px; font-weight: 600; word-break: break-all; }
.tool-desc {
  font-size: 12px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.detail-head h2 { margin: 2px 0 4px; font-size: 20px; font-weight: 600; }
.full-name { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.desc { white-space: pre-wrap; }

.tool-form { display: flex; flex-direction: column; gap: 14px; margin: 20px 0; max-width: 720px; }
.field label { display: block; font-weight: 600; margin-bottom: 4px; }
.field .req { color: var(--error); }
.field .type { margin-left: 8px; font-family: var(--mono); font-size: 11px; font-weight: 400; color: var(--muted); }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 3px; }
.actions { display: flex; gap: 8px; }

.result { max-width: 960px; }
.result-head { font-weight: 600; margin-bottom: 8px; }
.result-head.ok { color: var(--ok); }
.result-head.is-error { color: var(--error); }

pre {
  margin: 0 0 8px;
  padding: 10px 12px;
  font: 12px/1.5 var(--mono);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
  max-height: 480px;
}
.contents.is-error pre { background: var(--error-soft); border-color: #f3c4c4; color: var(--error); }
.content-img { max-width: 100%; border: 1px solid var(--border); border-radius: var(--radius); }
pre.raw { background: #1e2430; color: #d7dde8; border-color: #1e2430; }

.error-box {
  padding: 10px 14px;
  color: var(--error);
  background: var(--error-soft);
  border: 1px solid #f3c4c4;
  border-radius: var(--radius);
  white-space: pre-wrap;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; height: auto; }
}