:root {
  --primary:       #1A5C38;
  --primary-light: #2D8A56;
  --primary-dark:  #13452A;
  --accent:        #E8B84B;
  --accent-dark:   #C99A30;
  --text:          #1E293B;
  --text-muted:    #64748B;
  --bg:            #F8FAFC;
  --card-bg:       #FFFFFF;
  --border:        #E2E8F0;
  --radius:        0.75rem;
}

/* Base */
body {
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--primary); }
a:hover { color: var(--primary-dark); }

/* Navbar */
.navbar-brand .brand-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
}
.navbar {
  border-bottom: 1px solid var(--border);
  background: #fff !important;
}
.navbar-nav .nav-link {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.navbar-nav .nav-link:hover { color: var(--primary); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 3.5rem 0 4rem;
}
.hero h1 { font-size: 2.25rem; font-weight: 800; line-height: 1.2; }
.hero .lead { font-size: 1.05rem; opacity: 0.9; }
.hero .badge-pill {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  font-weight: 500;
  font-size: 0.8rem;
  padding: 0.35em 0.8em;
  border-radius: 2rem;
  backdrop-filter: blur(4px);
}

/* Cards */
.card-custom {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.card-custom .card-header-custom {
  padding: 1.25rem 1.5rem 0;
  border-bottom: none;
}
.card-custom .card-body-custom { padding: 1.25rem 1.5rem 1.5rem; }

/* Form elements */
.form-label { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.35rem; }
.form-control, .form-select {
  border-color: var(--border);
  border-radius: 0.5rem;
  font-size: 0.95rem;
  padding: 0.55rem 0.875rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(26,92,56,0.12);
}

/* Sex radio buttons */
.sex-radio { gap: 0.75rem; }
.sex-radio .btn-check + .btn {
  border-radius: 0.5rem;
  border: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  transition: all 0.15s;
}
.sex-radio .btn-check:checked + .btn {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

/* Primary button */
.btn-primary-custom {
  background: var(--primary);
  border: none;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.7rem 2rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
}
.btn-primary-custom:hover { background: var(--primary-dark); color: #fff; }

.btn-outline-custom {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.55rem 1.5rem;
  border-radius: 0.5rem;
  transition: all 0.2s;
}
.btn-outline-custom:hover { border-color: var(--primary); color: var(--primary); }

/* Gauge */
.gauge-wrap {
  background: #E2E8F0;
  border-radius: 2rem;
  height: 14px;
  position: relative;
  overflow: visible;
}
.gauge-bar {
  height: 100%;
  border-radius: 2rem;
  transition: width 0.6s ease;
  position: relative;
}
.gauge-ideal-marker {
  position: absolute;
  top: -5px;
  width: 4px;
  height: 24px;
  background: #1E293B;
  border-radius: 2px;
  transform: translateX(-50%);
  z-index: 2;
}
.gauge-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Stat grid */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.stat-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
}
.stat-box .stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}
.stat-box .stat-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

/* Result card */
.result-card {
  border-radius: var(--radius);
  border-width: 2px;
  border-style: solid;
  transition: all 0.3s;
}

/* DigiDogs CTA */
.digidogs-cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius);
  padding: 1.5rem;
  color: #fff;
}
.digidogs-cta a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}
.digidogs-cta a:hover { color: var(--accent-dark); text-decoration: underline; }

/* Share row */
.share-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}
.share-row .share-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 0.15rem;
}
.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); background: rgba(26,92,56,0.06); }
.share-btn.share-native { background: var(--primary); border-color: var(--primary); color: #fff; }
.share-btn.share-native:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }

/* Info section */
.info-section { background: #fff; border-top: 1px solid var(--border); padding: 3.5rem 0; }
.info-icon {
  width: 48px; height: 48px;
  background: rgba(26,92,56,0.08);
  border-radius: 0.5rem;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 1.4rem;
  flex-shrink: 0;
}

/* FAQ Section */
.faq-section {
  background: var(--bg);
  padding: 3.5rem 0;
  border-top: 1px solid var(--border);
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 0.5rem !important;
  margin-bottom: 0.5rem;
  overflow: hidden;
}
.faq-btn {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
  background: #fff;
  padding: 1rem 1.25rem;
  box-shadow: none !important;
}
.faq-btn:not(.collapsed) {
  color: var(--primary);
  background: #fff;
}
.faq-btn::after {
  filter: none;
}
.faq-btn:not(.collapsed)::after {
  filter: invert(28%) sepia(60%) saturate(500%) hue-rotate(100deg);
}
.faq-body {
  font-size: 0.875rem;
  color: var(--text-muted);
  background: #fff;
  padding: 0 1.25rem 1.25rem;
  line-height: 1.7;
}
.faq-body ul, .faq-body ol { padding-left: 1.25rem; }
.faq-body a { color: var(--primary); }

/* Footer */
footer {
  background: var(--text);
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  padding: 2rem 0;
}
footer a { color: rgba(255,255,255,0.7); text-decoration: none; }
footer a:hover { color: #fff; }
footer .footer-brand { color: #fff; font-weight: 700; }

/* Utilities */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
}
.divider { border-color: var(--border); }

/* Responsive tweaks */
@media (max-width: 576px) {
  .hero h1 { font-size: 1.75rem; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}