:root {
  --bg: #070b16;
  --panel: rgba(12, 18, 35, 0.88);
  --panel-2: rgba(17, 25, 48, 0.92);
  --text: #eef6ff;
  --muted: #94a3b8;
  --line: rgba(148, 163, 184, 0.2);
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --purple: #8b5cf6;
  --danger: #f97316;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(34, 211, 238, 0.16), transparent 30%),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.16), transparent 28%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 56px;
}

.card {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 190px;
  gap: 28px;
  align-items: center;
  padding: 34px;
  margin-bottom: 22px;
}

.hero-icon {
  width: 190px;
  height: 190px;
  object-fit: cover;
  border-radius: 34px;
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1, h2 { margin: 0; line-height: 1.05; }
h1 { font-size: clamp(2.25rem, 6vw, 4.7rem); max-width: 870px; }
h2 { font-size: 1.35rem; }

.lead {
  color: #cbd5e1;
  font-size: 1.08rem;
  line-height: 1.65;
  max-width: 820px;
}

.note, .muted {
  color: var(--muted);
  line-height: 1.55;
}

code {
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.16);
  padding: 0.13rem 0.35rem;
  border-radius: 8px;
  color: #a5f3fc;
}

.builder-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 22px;
  margin-bottom: 22px;
}

.builder-panel, .manifest-panel, .preview-card, .integrity-card { padding: 24px; }

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.block-list {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

.block-choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 18px;
  cursor: pointer;
}

.block-choice:hover { border-color: rgba(34, 211, 238, 0.32); }
.block-choice input { width: 19px; height: 19px; margin-top: 2px; accent-color: var(--cyan); }
.block-choice strong { display: block; margin-bottom: 4px; }
.block-choice small { color: var(--muted); line-height: 1.4; }

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-weight: 800;
  cursor: pointer;
}

.primary {
  color: #06111f;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
}

.secondary {
  color: var(--text);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(148, 163, 184, 0.22);
}

.rules-log {
  min-height: 24px;
  margin-top: 14px;
  color: #fed7aa;
  font-size: 0.92rem;
  line-height: 1.45;
}

pre {
  margin: 0;
  min-height: 430px;
  max-height: 590px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: #dbeafe;
  background: rgba(0,0,0,0.26);
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 18px;
  padding: 16px;
  line-height: 1.45;
}

.preview-header { align-items: center; }
.pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(34, 211, 238, 0.18);
  color: #a5f3fc;
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 0.85rem;
  background: rgba(34, 211, 238, 0.08);
}

.integrity-card { margin-bottom: 22px; }
.integrity-card pre { min-height: 130px; max-height: 230px; }

iframe {
  width: 100%;
  min-height: 560px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 22px;
  background: #0f172a;
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .hero-icon { width: 132px; height: 132px; }
  .builder-grid { grid-template-columns: 1fr; }
  .page-shell { width: min(100% - 20px, 1180px); padding-top: 18px; }
  .hero, .builder-panel, .manifest-panel, .preview-card, .integrity-card { padding: 18px; border-radius: 22px; }
}

.identity-card {
  margin-bottom: 22px;
}

#identityDetails {
  margin-top: 12px;
  min-height: 86px;
  white-space: pre-wrap;
}

#identityModeBadge.ok {
  border-color: rgba(34, 211, 238, .42);
  color: #a5f3fc;
}

#identityModeBadge.error {
  border-color: rgba(248, 113, 113, .42);
  color: #fecaca;
}

#identityModeBadge.warn {
  border-color: rgba(251, 191, 36, .42);
  color: #fde68a;
}