:root {
  --graphite: #1A1A2E;
  --teal: #00F5D4;
  --amber: #F7B731;
  --red: #E63946;
  --white: #F8F9FA;
  --slate: #6C757D;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--graphite);
  color: var(--white);
  min-height: 100vh;
}

.site-header {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.tagline {
  font-size: 0.9rem;
  color: var(--slate);
  margin-top: 0.4rem;
}

.form-container, .result-container {
  max-width: 640px;
  margin: 3rem auto;
  padding: 0 1.5rem 4rem;
}

h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.subhead { color: var(--slate); margin-bottom: 2rem; }

.form-group { margin-bottom: 1.5rem; }

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--white);
}

input[type="text"],
input[type="email"],
input[type="number"],
select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  color: var(--white);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--teal);
}

select option { background: var(--graphite); }

.checkbox-group, .radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.checkbox-group label,
.radio-group label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  transition: border-color 0.2s;
}

.checkbox-group label:hover,
.radio-group label:hover { border-color: var(--teal); }

.btn-primary {
  display: inline-block;
  background: var(--teal);
  color: var(--graphite);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  margin-top: 1rem;
  transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.88; }

.policy-note {
  font-size: 0.78rem;
  color: var(--slate);
  margin-top: 1.5rem;
}

.policy-note a { color: var(--teal); }

/* Result page */
.grade-card {
  text-align: center;
  border: 3px solid;
  border-radius: 16px;
  padding: 2.5rem;
  margin: 2rem 0;
}

.grade-letter {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 5rem;
  font-weight: 700;
  line-height: 1;
}

.grade-label {
  font-size: 0.9rem;
  color: var(--slate);
  margin-top: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

.metric-card {
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
  padding: 1.25rem;
  text-align: center;
}

.metric-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal);
}

.metric-label {
  font-size: 0.78rem;
  color: var(--slate);
  margin-top: 0.3rem;
}

.insight-block, .cta-block {
  background: rgba(255,255,255,0.04);
  border-left: 3px solid var(--teal);
  border-radius: 0 10px 10px 0;
  padding: 1.5rem;
  margin: 2rem 0;
}

.insight-block h2, .cta-block h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.insight-block p, .cta-block p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(248,249,250,0.85);
}

.methodology-note {
  font-size: 0.72rem;
  color: var(--slate);
  margin-top: 2rem;
  line-height: 1.5;
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.78rem;
  color: var(--slate);
  border-top: 1px solid rgba(255,255,255,0.06);
}

footer a { color: var(--teal); text-decoration: none; }

@media (max-width: 480px) {
  .metrics-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.5rem; }
}