:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

* {
  box-sizing: border-box;
}

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

main {
  padding-top: 72px;
}

.section {
  padding: 72px 0;
}

.section-muted {
  background: #f1f3f6;
}

.eyebrow {
  letter-spacing: 0.16em;
  font-size: 0.75rem;
}

.navbar {
  backdrop-filter: blur(6px);
}

.navbar-brand {
  font-size: 1.05rem;
}

.hero-section .lead {
  font-size: 1.1rem;
}

.hero-card,
.about-panel,
.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.badge-soft {
  background: #f3f4f6;
  color: var(--text);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 500;
  font-size: 0.75rem;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.4rem;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-outline-dark {
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.4rem;
}

.card {
  border-radius: var(--radius-md);
}

.form-control {
  border-radius: var(--radius-sm);
  border-color: var(--border);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.toast {
  border-radius: var(--radius-sm);
}

footer a {
  text-decoration: none;
}

@media (max-width: 991px) {
  .section {
    padding: 56px 0;
  }
  .hero-section {
    padding-top: 40px;
  }
}