:root {
  --pso-primary-green: #2ecc71;
  --pso-primary-green-dark: #27ae60;
  --pso-primary-blue: #3498db;
  --pso-primary-blue-dark: #1f6fb2;
  --pso-accent-orange: #ffb347;
  --pso-surface-100: #ffffff;
  --pso-surface-200: #f5f9fc;
  --pso-surface-300: #e7eef6;
  --pso-border-color: #dae3ef;
  --pso-text-primary: #0f1d2e;
  --pso-text-secondary: #5a6a7f;
  --pso-shadow-soft: 0 16px 35px rgba(15, 29, 46, 0.08);
  --pso-shadow-strong: 0 25px 45px rgba(15, 29, 46, 0.12);
}

[data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root[data-theme="dark"] {
    --pso-surface-100: #0e1623;
    --pso-surface-200: #111b2c;
    --pso-surface-300: #172235;
    --pso-border-color: rgba(255, 255, 255, 0.08);
    --pso-text-primary: #f2f6fb;
    --pso-text-secondary: #a9b5c7;
    --pso-shadow-soft: 0 16px 35px rgba(0, 0, 0, 0.65);
    --pso-shadow-strong: 0 25px 45px rgba(0, 0, 0, 0.75);
  }
}

body {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: var(--pso-surface-200);
  color: var(--pso-text-primary);
  line-height: 1.65;
}

.hero-section,
.header,
.navbar {
  background: linear-gradient(135deg, rgba(46, 204, 113, 0.95), rgba(52, 152, 219, 0.95));
  color: #fff;
}

.navbar-brand,
.navbar a,
.navbar .nav-link {
  color: #fff !important;
  font-weight: 600;
}

.navbar .nav-link:not(.btn):hover {
  opacity: 0.85;
}

.btn-primary,
button.btn-primary,
.btn-hero {
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.75rem;
  font-weight: 600;
  background: linear-gradient(120deg, var(--pso-primary-green), var(--pso-primary-blue));
  box-shadow: 0 15px 35px rgba(46, 204, 113, 0.3);
  color: #fff !important;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover,
button.btn-primary:hover,
.btn-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(52, 152, 219, 0.35);
}

.btn-outline {
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

section,
.pso-section {
  padding: 4rem 0;
}

.card,
.feature-card,
.testimonial,
.pricing-card {
  border-radius: 24px;
  border: 1px solid transparent;
  background: var(--pso-surface-100);
  box-shadow: var(--pso-shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border 0.25s ease;
}

.card:hover,
.feature-card:hover,
.testimonial:hover,
.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(52, 152, 219, 0.25);
  box-shadow: var(--pso-shadow-strong);
}

.feature-icon,
.icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(46, 204, 113, 0.15), rgba(52, 152, 219, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pso-primary-green);
  font-size: 1.5rem;
}

.section-title {
  font-size: clamp(2rem, 2.75vw, 2.8rem);
  color: var(--pso-text-primary);
  font-weight: 700;
}

.section-subtitle {
  color: var(--pso-text-secondary);
  font-size: 1.1rem;
  max-width: 720px;
  margin: 1rem auto 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.cta-section {
  border-radius: 32px;
  padding: 3rem;
  background: radial-gradient(circle at 20% 20%, rgba(46, 204, 113, 0.85), rgba(52, 152, 219, 0.85));
  color: #fff;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.footer {
  background: var(--pso-surface-300);
  padding: 3rem 0;
  color: var(--pso-text-secondary);
}

.footer a {
  color: var(--pso-primary-blue);
}

.footer .footer-title {
  font-weight: 600;
  color: var(--pso-text-primary);
}

.testimonial {
  background: var(--pso-surface-100);
  padding: 2rem;
}

.testimonial::before {
  content: "\201C";
  font-size: 4rem;
  line-height: 0;
  color: var(--pso-primary-blue);
}

.form-control,
input,
textarea,
select {
  border-radius: 14px;
  border: 1px solid var(--pso-border-color);
  background: var(--pso-surface-100);
  padding: 0.9rem 1rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus,
input:focus,
textarea:focus,
select:focus {
  border-color: var(--pso-primary-blue);
  box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.15);
}

.badge,
.tag {
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  font-weight: 600;
}

.badge-success {
  background: rgba(46, 204, 113, 0.15);
  color: var(--pso-primary-green);
}

.badge-info {
  background: rgba(52, 152, 219, 0.15);
  color: var(--pso-primary-blue);
}

.pricing-card .price {
  font-size: 3rem;
  color: var(--pso-primary-green);
}

.timeline::before {
  background: linear-gradient(180deg, var(--pso-primary-green), var(--pso-primary-blue));
}

.timeline .timeline-badge {
  background: var(--pso-primary-blue);
}

[data-theme="dark"] body {
  background: var(--pso-surface-200);
}

[data-theme="dark"] .card,
[data-theme="dark"] .feature-card,
[data-theme="dark"] .testimonial,
[data-theme="dark"] .pricing-card {
  background: rgba(9, 15, 24, 0.92);
  border-color: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .cta-section {
  background: radial-gradient(circle at 20% 20%, rgba(46, 204, 113, 0.95), rgba(30, 66, 107, 0.9));
}

[data-theme="dark"] .footer {
  background: rgba(5, 10, 18, 0.95);
  color: #dee7f7;
}

[data-theme="dark"] .footer a {
  color: #a8d4ff;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-section {
    text-align: center;
    padding: 4rem 0;
  }

  .navbar .nav-link {
    margin: 0.25rem 0;
  }
}

@media (max-width: 768px) {
  .cta-section {
    padding: 2rem;
  }

  .grid-3 {
    gap: 1.5rem;
  }
}

@media (max-width: 576px) {
  .btn-primary,
  .btn-outline {
    width: 100%;
    text-align: center;
  }

  .section-title {
    font-size: 1.8rem;
  }
}