:root {
  --primary-color: #fdb813;
  --secondary-color: #2c3e50;
  --accent-color: #e67e22;
  --light-bg: #f8f9fa;
  --dark-bg: #212529;
  --text-dark: #2c3e50;
  --text-light: #6c757d;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
}

.navbar-brand {
  font-size: 1.75rem;
  color: var(--primary-color) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--text-dark) !important;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color) !important;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--dark-bg);
  font-weight: 600;
  padding: 0.75rem 2rem;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #e5a711;
  border-color: #e5a711;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(253, 184, 19, 0.4);
}

.btn-outline-primary {
  border-color: var(--primary-color);
  color: var(--primary-color);
  font-weight: 600;
}

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

.hero-section {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  padding: 4rem 0;
}

.hero-section h1 {
  color: var(--secondary-color);
}

.hero-section .lead {
  color: var(--text-light);
}

.page-header {
  background: linear-gradient(135deg, var(--light-bg) 0%, #e9ecef 100%);
}

.icon-circle {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto;
}

.icon-circle-large {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto;
}

.step-number {
  width: 60px;
  height: 60px;
  background-color: var(--primary-color);
  color: var(--dark-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: bold;
  margin: 0 auto;
}

.card {
  border: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.card-img-top {
  height: 200px;
  object-fit: cover;
}

.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.bg-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%) !important;
}

footer a {
  text-decoration: none;
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--primary-color) !important;
}

#bmi-result {
  font-size: 1.25rem;
  font-weight: 600;
}

.success-icon {
  width: 120px;
  height: 120px;
  background-color: #28a745;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .hero-section {
    padding: 2rem 0;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .navbar-brand {
    font-size: 1.5rem;
  }

  .btn-lg {
    padding: 0.5rem 1.5rem;
  }
}