:root {
  --bg: #0e1b3a;
  --bg-soft: #14254f;
  --fg: #1a1d2e;
  --fg-soft: #555;
  --accent: #3c6383;
  --accent-strong: #1e3a7a;
  --good: #1f8a4f;
  --bad: #c0392b;
  --shell: #f7f8fb;
  --line: #d8dde8;
  --warn: #e58e26;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--shell);
  color: var(--fg);
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 32px;
  background: var(--bg);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.topbar .brand { font-size: 14px; }
.topbar .status { font-size: 12px; opacity: 0.7; font-family: ui-monospace, monospace; }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px;
}

.section-nav {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
}
.section-nav button {
  border: 1px solid var(--line);
  background: #fff;
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  color: var(--fg-soft);
}
.section-nav button.active {
  background: var(--accent-strong);
  color: #fff;
  border-color: var(--accent-strong);
}
.section-nav button.complete {
  background: var(--good);
  color: #fff;
  border-color: var(--good);
}

section { display: none; }
section.active { display: block; }

section h1 {
  font-size: 22px;
  margin: 0 0 8px;
  color: var(--bg);
}
.hint { color: var(--fg-soft); font-size: 14px; margin: 0 0 20px; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.grid label {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 13px;
  color: var(--fg-soft);
}
.grid label.full { grid-column: 1 / -1; }
.grid input, .grid select, .grid textarea {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--fg);
}
.grid input:focus, .grid select:focus, .grid textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.grid textarea { resize: vertical; }

.actions {
  margin-top: 24px;
  display: flex; gap: 12px;
}
.actions button {
  font-family: inherit;
  font-size: 14px;
  padding: 10px 20px;
  background: var(--accent-strong);
  color: #fff;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}
.actions button:hover { background: var(--bg); }
#finalize-btn { background: var(--good); }
#finalize-btn:disabled { background: #999; cursor: not-allowed; }

#asset-checklist .category {
  margin-bottom: 18px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
}
#asset-checklist h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-soft);
  margin: 0 0 10px;
}
#asset-checklist .asset {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 6px 0;
  font-size: 14px;
}
#asset-checklist .asset input { margin-top: 3px; }
#asset-checklist .asset-meta { color: var(--fg-soft); font-size: 12px; }
#asset-checklist .asset .deps { color: var(--warn); font-size: 11px; }

.estimate {
  margin: 16px 0;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 14px;
}

.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--good);
  color: #fff;
  padding: 10px 18px;
  border-radius: 4px;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: opacity 0.3s;
}
.toast.error { background: var(--bad); }

.loading { color: var(--fg-soft); font-style: italic; }