:root {
  --pps-primary: #2563eb;
  --pps-primary-dark: #1d4ed8;
  --pps-accent: #0f172a;
  --pps-muted: #64748b;
  --pps-surface: #f8fafc;
  --pps-border: #e2e8f0;
  --pps-radius: 0.75rem;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--pps-accent);
  background-color: #fff;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  letter-spacing: -0.02em;
}

/* Navbar */
.site-navbar {
  background-color: #fff !important;
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-mark {
  color: var(--pps-primary);
}

.brand-text {
  color: var(--pps-accent);
  font-weight: 500;
}

.nav-link {
  color: var(--pps-muted);
  font-weight: 500;
  padding: 0.5rem 0.85rem !important;
  border-radius: 0.5rem;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--pps-primary);
}

.nav-link.active {
  color: var(--pps-primary);
  background-color: rgba(37, 99, 235, 0.08);
  font-weight: 600;
}

/* Buttons */
.btn-primary {
  background-color: var(--pps-primary);
  border-color: var(--pps-primary);
}

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

.btn-outline-primary {
  color: var(--pps-primary);
  border-color: var(--pps-primary);
}

.btn-outline-primary:hover {
  background-color: var(--pps-primary);
  border-color: var(--pps-primary);
}

/* Sections */
.hero-section {
  background: linear-gradient(135deg, var(--pps-surface) 0%, #eef2ff 100%);
  border: 1px solid var(--pps-border);
}

.cta-section {
  background-color: var(--pps-surface);
  border-color: var(--pps-border) !important;
}

/* Cards */
.service-card,
.portfolio-card {
  border: 1px solid var(--pps-border);
  border-radius: var(--pps-radius);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover,
.portfolio-card:hover {
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  transform: translateY(-2px);
}

.card-footer .badge {
  font-weight: 500;
}

/* About */
.about-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--pps-primary) 0%, #6366f1 100%);
  color: #fff;
  font-size: 3.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.why-list li {
  padding-left: 1.5rem;
  position: relative;
}

.why-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--pps-primary);
  font-weight: 700;
}

/* Contact */
.contact-info {
  background-color: var(--pps-surface);
  border: 1px solid var(--pps-border);
}

.contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--pps-muted);
  font-weight: 600;
}

.contact-list a {
  color: var(--pps-accent);
  text-decoration: none;
  font-weight: 500;
}

.contact-list a:hover {
  color: var(--pps-primary);
}

/* Footer */
.site-footer {
  background-color: var(--pps-surface);
  margin-top: auto;
}

.footer-brand {
  font-weight: 700;
  color: var(--pps-accent);
}

.footer-link {
  color: var(--pps-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-link:hover {
  color: var(--pps-primary);
}

/* Utilities */
.text-secondary {
  color: var(--pps-muted) !important;
}

main .alert-success {
  border-radius: var(--pps-radius);
}

@media (max-width: 767.98px) {
  .hero-section {
    padding: 2rem !important;
  }

  .display-5 {
    font-size: 1.75rem;
  }

  .site-footer .col-md-4 {
    text-align: center !important;
  }
}