:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --accent-hover: #4493f8;
  --warn: #d29922;
  --error: #f85149;
  --ok: #2ea043;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, #0e1116, #1a2332);
}

header h1 {
  margin: 0 0 6px 0;
  font-size: 22px;
  font-weight: 600;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 32px 64px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
}

.card h2 {
  margin: 0 0 16px 0;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h3 {
  margin: 18px 0 8px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.step-num {
  display: inline-flex;
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.hidden { display: none; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 32px;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}

.dropzone.dragover {
  border-color: var(--accent);
  background: rgba(47, 129, 247, 0.08);
}

.dropzone p { margin: 4px 0; }

.dropzone .hint {
  color: var(--muted);
  font-size: 13px;
}

.link-btn {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  font: inherit;
}

.status { font-size: 13px; color: var(--muted); margin-top: 10px; }
.status.error { color: var(--error); }
.status.ok { color: var(--ok); }

#summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.summary-block {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}

.summary-block h4 {
  margin: 0 0 6px 0;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.summary-block dl {
  margin: 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 12px;
  row-gap: 4px;
  font-size: 13px;
}

.summary-block dt { color: var(--muted); }
.summary-block dd { margin: 0; font-family: ui-monospace, "SF Mono", Menlo, monospace; }

form .row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--muted);
}

form label.full { grid-column: 1 / -1; }

form input[type="text"], form select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font: inherit;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

form input[type="text"]:focus, form select:focus {
  outline: none;
  border-color: var(--accent);
}

button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 6px;
  font: inherit;
  cursor: pointer;
}

button:hover { border-color: var(--accent); }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-weight: 600;
}

button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.config-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

pre#new-config {
  background: #0a0e14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  max-height: 480px;
  overflow: auto;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12.5px;
  line-height: 1.45;
  white-space: pre;
}

.table-wrap {
  max-height: 320px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
}

table th, table td {
  text-align: left;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}

table thead th {
  position: sticky;
  top: 0;
  background: var(--panel);
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.warning-banner {
  background: rgba(210, 153, 34, 0.12);
  border: 1px solid var(--warn);
  color: var(--warn);
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 13px;
}

footer {
  text-align: center;
  padding: 24px 0;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
}

@media (max-width: 720px) {
  form .row { grid-template-columns: 1fr; }
  #summary { grid-template-columns: 1fr; }
}