:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --green: #3fb950;
  --red: #f85149;
  --radius: 6px;
  --font: system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, 'SF Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

.container { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }

/* Header */
header { text-align: center; margin-bottom: 48px; }
header h1 { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
header p { color: var(--text-muted); font-size: 17px; }
header .links { margin-top: 16px; }
header .links a { margin: 0 12px; font-size: 14px; }

/* Sections */
section { margin-bottom: 48px; }
section h2 { font-size: 20px; font-weight: 600; margin-bottom: 16px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border); }
section h3 { font-size: 15px; font-weight: 600; margin: 20px 0 8px; }
section p, section ul { margin-bottom: 12px; }
section ul { padding-left: 24px; }
section li { margin-bottom: 4px; }

/* Code blocks */
pre { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; overflow-x: auto; font-family: var(--mono); font-size: 13px; line-height: 1.5;
  margin-bottom: 16px; position: relative; }
pre .copy-btn { position: absolute; top: 8px; right: 8px; }
code { font-family: var(--mono); font-size: 13px; }
p code { background: var(--surface); padding: 2px 6px; border-radius: 3px; }

/* Configurator */
.configurator { background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; }

.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }

.field input[type="text"],
.field select {
  width: 100%; padding: 8px 12px; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font); font-size: 14px;
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--accent);
}

.radio-group { display: flex; gap: 12px; flex-wrap: wrap; }
.radio-group label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: normal; text-transform: none; letter-spacing: 0;
  cursor: pointer; color: var(--text);
}

/* Mode chips (inline radios with title tooltips) */
.mode-chips { gap: 8px 12px; }

.field-row { display: flex; gap: 12px; }
.field-row .field { flex: 1; }

.collapsible summary { cursor: pointer; font-size: 13px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.collapsible .fields { margin-top: 12px; }

/* Advanced section */
.advanced-section { margin-bottom: 16px; }
.advanced-section[data-empty] { pointer-events: none; opacity: 0.35; }
.advanced-section[data-empty] summary::after { content: ' — n/a for this mode'; font-weight: normal;
  text-transform: none; letter-spacing: 0; font-size: 12px; }
.field-hint { display: block; font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.checkbox-label { display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: normal; text-transform: none; letter-spacing: 0;
  cursor: pointer; color: var(--text); }
.arch-hint { color: var(--text-muted); font-weight: normal; font-size: 12px; }
.platform-field { display: flex; flex-direction: column; gap: 6px; }
.platform-field.disabled input[type="text"] { opacity: 0.35; pointer-events: none; }
.platform-field.disabled label { opacity: 0.6; }
.info-link { color: var(--text-muted); vertical-align: middle; margin-left: 4px; }
.info-link:hover { color: var(--accent); }
.info-link svg { vertical-align: -2px; }
/* Input group with prefix */
.input-group { display: flex; flex: 1; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); overflow: hidden; }
.input-group:focus-within { border-color: var(--accent); }
.input-prefix { display: flex; align-items: center; padding: 0 0 0 12px;
  font-size: 14px; color: var(--text-muted); white-space: nowrap; user-select: none; }
.input-group input[type="text"] { border: none; border-radius: 0; padding-left: 0; flex: 1; }
.input-group input[type="text"]:focus { outline: none; border-color: transparent; }

.color-input-wrap { display: flex; gap: 8px; align-items: center; }
.color-input-wrap input[type="color"] { width: 36px; height: 36px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg); padding: 2px; cursor: pointer; }
.color-input-wrap input[type="text"] { flex: 1; }

/* Output */
.output-wrap { position: relative; margin-top: 20px; }
.output-wrap pre { margin: 0; }
.copy-btn { position: absolute; top: 8px; right: 8px; background: var(--border);
  color: var(--text); border: none; border-radius: var(--radius); padding: 6px 8px;
  cursor: pointer; display: flex; align-items: center; justify-content: center; line-height: 1; }
.copy-btn:hover { background: var(--accent); color: var(--bg); }
.copy-btn.copied { background: var(--green); color: var(--bg); }

/* Preview */
.preview { margin-top: 20px; padding: 24px; background: var(--bg);
  border: 1px dashed var(--border); border-radius: var(--radius); text-align: center; }
.preview .dl-latest-btn { display: inline-block; padding: 12px 24px; background: #fff;
  color: #000; border-radius: 8px; text-decoration: none; font: 600 16px/1 system-ui, sans-serif;
  cursor: pointer; }

/* Platform selector */
.preview .dl-latest-selector {
  padding: 8px 12px; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font); font-size: 14px; margin-right: 8px;
  min-width: 240px;
}

/* Assets list */
.assets-found { margin-top: 12px; font-size: 13px; color: var(--text-muted); }
.assets-found .count { color: var(--green); font-weight: 600; }

/* Footer */
footer { text-align: center; color: var(--text-muted); font-size: 13px;
  padding-top: 32px; border-top: 1px solid var(--border); }
footer a { color: var(--text-muted); }
footer a:hover { color: var(--accent); }

/* Regex tooltip */
.regex-tip { position: relative; display: inline-flex; align-items: center; }
.regex-tip .tip-icon { color: var(--text-muted); cursor: pointer; margin-left: 6px; flex-shrink: 0; }
.regex-tip .tip-icon:hover { color: var(--accent); }
.regex-tip .tip-popup {
  display: none; position: absolute; left: 24px; top: -8px; z-index: 10;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px 14px; font-size: 12px; line-height: 1.6; white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,.4); color: var(--text-muted);
}
.regex-tip .tip-popup code { font-size: 11px; background: var(--bg); padding: 1px 5px; border-radius: 3px; color: var(--text); }
.regex-tip:hover .tip-popup { display: block; }
.regex-tip.active .tip-popup { display: block; }
.regex-tip .tip-popup { user-select: text; cursor: text; }

/* Table */
table { width: 100%; border-collapse: collapse; margin-bottom: 16px; font-size: 14px; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
td code { font-size: 12px; }