:root {
  --bg: #f5f6fa;
  --card-bg: #ffffff;
  --primary: #2754c5;
  --primary-dark: #1c3d96;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e2e5ec;
  --success: #1f9d55;
  --warn: #d97706;
  --danger: #dc2626;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app { max-width: 1100px; margin: 0 auto; padding: 24px 20px 60px; }

header { text-align: center; margin-bottom: 28px; }
header h1 { font-size: 1.7rem; margin-bottom: 4px; color: var(--primary-dark); }
.subtitle { color: var(--muted); margin: 0; font-size: 0.95rem; }

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 18px;
  padding: 16px 20px 20px;
  background: var(--card-bg);
}

legend {
  font-weight: 600;
  padding: 0 6px;
  color: var(--primary-dark);
}

.hint { color: var(--muted); font-weight: 400; font-size: 0.8rem; }

.grid { display: grid; gap: 14px; margin-top: 8px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  gap: 4px;
}

input, textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(39, 84, 197, 0.12);
}

button[type="submit"] {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

button[type="submit"]:hover { background: var(--primary-dark); }
button[type="submit"]:disabled { background: var(--muted); cursor: not-allowed; }

.hidden { display: none !important; }

#loading {
  text-align: center;
  padding: 40px 0;
  color: var(--muted);
}

.spinner {
  width: 36px; height: 36px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 12px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.error-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  padding: 14px 16px;
  border-radius: var(--radius);
  margin: 16px 0;
  font-size: 0.9rem;
  white-space: pre-wrap;
}

#results h2 { margin-top: 32px; color: var(--primary-dark); }

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.card.wide { grid-column: 1 / -1; }

@media (max-width: 800px) {
  .results-grid { grid-template-columns: 1fr; }
}

.card h3 { margin-top: 0; font-size: 1rem; color: var(--primary-dark); }
.card h4 { margin: 6px 0 4px; font-size: 0.85rem; color: var(--muted); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 10px; }
.two-col ul { margin: 0; padding-left: 18px; font-size: 0.88rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.mini-table td:first-child { color: var(--muted); width: 110px; }

.confidence-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  color: white;
}

#recommendationsList { padding-left: 20px; font-size: 0.9rem; line-height: 1.6; }

.disclaimer {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--muted);
  background: #fffbeb;
  border: 1px solid #fde68a;
  padding: 10px 14px;
  border-radius: 8px;
}

.raw-json { margin-top: 16px; font-size: 0.8rem; }
.raw-json pre {
  background: #0f172a;
  color: #d1fae5;
  padding: 14px;
  border-radius: 8px;
  overflow-x: auto;
  max-height: 300px;
}