:root {
  --bg: #14171c;
  --panel: #1c2129;
  --panel-2: #232a35;
  --border: #333c4a;
  --text: #e6e9ef;
  --muted: #97a2b4;
  --accent: #7c9fff;
  --accent-strong: #5c7fe0;
  --danger: #e0616f;
  --warn: #e0b84a;
  --success: #5cb85c;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}

header.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 24px;
}
header.site-header a { color: var(--accent); text-decoration: none; }
header.site-header nav a { margin-left: 16px; color: var(--muted); }

h1, h2, h3 { line-height: 1.25; }
.muted { color: var(--muted); }
.small { font-size: 0.85em; }

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

.btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.95em;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #0d1117; font-weight: 600; }
.btn.small { padding: 4px 10px; font-size: 0.85em; }
.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 4px;
  cursor: pointer;
  width: 28px; height: 28px;
}
.icon-btn.danger { color: var(--danger); }
.icon-btn:disabled { opacity: 0.3; cursor: default; }

input[type=text], select, textarea {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 6px 8px;
  font-size: 0.95em;
}
textarea { width: 100%; font-family: monospace; resize: vertical; box-sizing: border-box; }
label { color: var(--muted); font-size: 0.9em; display: block; margin-bottom: 2px; }
label.inline { display: inline-flex; align-items: center; gap: 4px; margin: 0 12px 0 0; }

.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 16px;
}
.version-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}
.version-card:hover { border-color: var(--accent); }

.builder-header {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
}
.builder-header input[type=text] { width: 100%; }

.rules { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }

.rule-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.rule-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.rule-card-controls { display: flex; gap: 6px; }

.field-row { margin: 10px 0; }
.field-row label { margin-bottom: 4px; }

.action-editor {
  border-left: 2px solid var(--border);
  padding-left: 12px;
  margin-top: 6px;
}
.param-fields { display: flex; flex-direction: column; gap: 8px; margin: 8px 0; }
.metadata-hint, .nbt-hint { margin-top: 3px; }
.nbt-hint a { color: var(--accent); }
.nested-action, .branches { margin-top: 10px; }
.branch {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
}
.branch-header { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }

.predicates { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 10px; }
.predicate-row { display: flex; gap: 8px; align-items: center; margin: 6px 0; }
.range-inputs { display: inline-flex; align-items: center; gap: 6px; }

.add-rule { margin-bottom: 24px; }

.preview-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.preview-panel pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.85em;
  color: var(--text);
  transition: color 0.2s ease;
}
.preview-panel pre.has-issues { color: var(--danger); }
.preview-panel pre.no-issues { color: var(--success); }
.warnings { display: flex; flex-direction: column; gap: 4px; margin: 10px 0; }
.warning-item { color: var(--warn); font-size: 0.9em; }
.error-item { color: var(--danger); font-size: 0.9em; }
.save-row { display: flex; gap: 10px; margin-top: 10px; }
.save-success { background: #1d2b1f; border: 1px solid #3a6b45; border-radius: 8px; padding: 12px; margin-top: 10px; }
.error-box { background: #2b1d1f; border: 1px solid #6b3a3a; border-radius: 8px; padding: 12px; margin-top: 10px; color: var(--danger); }

.landing-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 20px; }
.landing-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: var(--text);
  display: block;
}
.landing-card:hover { border-color: var(--accent); }
.landing-card h3 { margin-top: 0; color: var(--accent); }

.import-box textarea { width: 100%; min-height: 240px; font-family: monospace; }

.import-errors, .import-warnings { margin: 16px 0; }
.import-error-card {
  background: #2b1d1f; border: 1px solid #6b3a3a; border-radius: 8px; padding: 12px; margin-bottom: 8px;
}
.import-error-card pre { background: #0d1117; padding: 8px; border-radius: 6px; overflow-x: auto; }

table.summary-table { border-collapse: collapse; width: 100%; margin: 12px 0; }
table.summary-table td, table.summary-table th { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }

header.site-header nav .btn { margin-left: 16px; }

/* Playbook is a docked reference panel, not a modal — no backdrop. On wide-enough screens the
   page content stays clear of it by reserving its width on the right, rather than shrinking to
   a smaller centered column — the 960px reading-width cap only makes sense when there's nothing
   else on screen competing for space. */
@media (min-width: 760px) {
  body.playbook-open .page { max-width: none; margin-right: 424px; }
}

.playbook-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(400px, 100vw);
  height: 100vh;
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.4);
  padding: 24px;
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.25s ease;
}
.playbook-panel.open { transform: translateX(0); }
.playbook-panel h2 { margin-top: 0; }
.playbook-panel h3 { margin-bottom: 6px; }
.playbook-panel ul { margin: 0 0 16px; padding-left: 20px; }
.playbook-panel li { margin-bottom: 6px; }
.playbook-panel pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  overflow-x: auto;
  font-size: 0.85em;
  margin: 0 0 16px;
}
.playbook-panel code {
  background: #0d1117;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}
.playbook-panel pre code { background: none; padding: 0; }
.playbook-panel .close-btn { float: right; }