:root {
  --bg: #f6f7fb;
  --text: #1f2937;
  --muted: #64748b;
  --card: #ffffff;
  --line: #dbe3ef;
  --primary: #1d4ed8;
  --primary-dark: #1e40af;
  --danger: #b91c1c;
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #eef5ff 0%, var(--bg) 46%);
  color: var(--text);
}
.app-shell {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 28px 18px 56px;
}
.hero {
  margin-bottom: 18px;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #eaf2ff 100%);
  box-shadow: var(--shadow);
}
.eyebrow { color: var(--primary); font-weight: 700; margin: 0 0 8px; }
h1 { margin: 0; font-size: clamp(2rem, 8vw, 4rem); letter-spacing: -0.05em; }
h2 { margin-top: 0; font-size: 1.6rem; }
h3 { font-size: clamp(2rem, 8vw, 4rem); margin: 0.2em 0; letter-spacing: -0.05em; }
.hero-desc, .notice, .hint, .optional { color: var(--muted); }
.screen { display: none; }
.screen.active { display: block; }
.card, .result-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  box-shadow: var(--shadow);
}
.form-grid { display: grid; gap: 16px; }
label { display: grid; gap: 8px; font-weight: 700; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1rem;
  font: inherit;
  background: #fff;
}
textarea { resize: vertical; line-height: 1.7; }
.checkbox-row { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.checkbox-row input { width: 20px; height: 20px; }
button {
  border: 0;
  border-radius: 16px;
  padding: 15px 18px;
  font-weight: 800;
  font-size: 1.05rem;
  cursor: pointer;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
.primary { background: var(--primary); color: #fff; }
.primary:not(:disabled):hover { background: var(--primary-dark); }
.secondary { background: #e2e8f0; color: var(--text); }
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.stats-row div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  text-align: center;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}
.stats-row strong { display: block; font-size: 1.8rem; color: var(--primary); }
.stats-row span { color: var(--muted); font-size: 0.92rem; }
.target-title { margin-top: 0; font-weight: 800; }
.target-text {
  white-space: pre-wrap;
  word-break: keep-all;
  line-height: 1.9;
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: 18px;
  padding: 16px;
  font-family: inherit;
  font-size: 1.08rem;
}
#typing-input { min-height: 180px; }
.center-screen { text-align: center; padding: 48px 0; }
.loader {
  width: 54px;
  height: 54px;
  margin: 0 auto 18px;
  border-radius: 999px;
  border: 6px solid #dbeafe;
  border-top-color: var(--primary);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.result-card {
  text-align: center;
  background: linear-gradient(160deg, #ffffff 0%, #edf5ff 100%);
}
.small-label { color: var(--primary); font-weight: 800; margin: 0; }
.result-card p { font-size: 1.1rem; line-height: 1.7; }
blockquote {
  margin: 18px 0;
  padding: 18px;
  border-left: 5px solid var(--primary);
  background: #fff;
  border-radius: 18px;
  font-weight: 800;
}
.result-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  color: var(--muted);
}
.result-meta span { background: #fff; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); }
.error { color: var(--danger); font-weight: 800; }
.admin-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 18px; overflow: hidden; }
.admin-table th, .admin-table td { border-bottom: 1px solid var(--line); padding: 10px; text-align: left; font-size: 0.92rem; }
.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 16px 0; }
.admin-stat { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 16px; box-shadow: var(--shadow); }
.admin-stat strong { display: block; font-size: 1.8rem; color: var(--primary); }
@media (max-width: 560px) {
  .stats-row { grid-template-columns: 1fr; }
  .card, .result-card, .hero { padding: 18px; border-radius: 20px; }
}