:root {
  --primary: #0f172a;
  --primary-accent: #2563eb;
  --secondary-accent: #3b82f6;
  --accent-light: #eff6ff;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --border-color: #e2e8f0;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  --hover-shadow: 0 20px 30px -10px rgba(37, 99, 235, 0.15);
  --radius: 12px;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-badge {
  background: linear-gradient(135deg, var(--primary-accent), #1d4ed8);
  color: var(--white);
  font-weight: 800;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  font-size: 1.2rem;
  letter-spacing: 1px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--primary-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-accent), #1d4ed8);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-accent);
  color: var(--primary-accent);
}

.btn-outline:hover {
  background: var(--accent-light);
}

/* Hero Section */
.hero {
  padding: 6rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-content h1 span {
  background: linear-gradient(135deg, var(--primary-accent), #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.stat-item h3 {
  font-size: 1.8rem;
  color: var(--primary-accent);
  font-weight: 800;
}

.stat-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.hero-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  position: relative;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -10px;
  right: -10px;
  bottom: -10px;
  left: -10px;
  background: linear-gradient(135deg, var(--primary-accent), #3b82f6);
  border-radius: 24px;
  z-index: -1;
  opacity: 0.15;
}

/* Services */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: 2.3rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
  border-color: var(--secondary-accent);
}

.service-icon {
  width: 50px;
  height: 50px;
  background: var(--accent-light);
  color: var(--primary-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Calculator Section */
.calc-section {
  background: var(--white);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.calc-box {
  background: var(--bg-light);
  padding: 3rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.form-control, .form-select {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--white);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-value {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-accent);
  min-width: 80px;
}

.calc-result {
  background: var(--primary);
  color: var(--white);
  padding: 2.5rem;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-result h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.price-display {
  font-size: 2.8rem;
  font-weight: 800;
  color: #60a5fa;
  margin: 1.5rem 0;
}

.price-note {
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 2rem;
}

/* Contact Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.info-icon {
  width: 42px;
  height: 42px;
  background: var(--accent-light);
  color: var(--primary-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* Footer */
footer {
  background: var(--primary);
  color: var(--white);
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: #94a3b8;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .hero, .calc-box, .contact-grid, .footer-container {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}