:root {
  --primary-green: #28a745;
  --dark-green: #1e7e34;
  --light-bg: #f8f9fa;
  --text-dark: #2c3e50;
  --text-muted: #6c757d;
  --border-light: #e9ecef;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-dark);
}

body {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  color: var(--primary-green);
  text-decoration: none;
}

a:hover {
  color: var(--dark-green);
}

.text-success {
  color: var(--primary-green) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

.btn-success {
  background-color: var(--primary-green);
  border-color: var(--primary-green);
  color: white;
}

.btn-success:hover {
  background-color: var(--dark-green);
  border-color: var(--dark-green);
}

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

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

.navbar {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.card {
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1) !important;
}

.hero {
  background: linear-gradient(135deg, var(--light-bg) 0%, #fff 100%);
  border-bottom: 1px solid var(--border-light);
}

.hero h1 {
  color: var(--text-dark);
  line-height: 1.2;
}

.form-control {
  border: 1px solid var(--border-light);
  border-radius: 0.25rem;
  padding: 0.75rem;
}

.form-control:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.form-check-input:checked {
  background-color: var(--primary-green);
  border-color: var(--primary-green);
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-color: var(--primary-green);
  color: var(--text-dark);
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  border-color: #17a2b8;
}

footer {
  background-color: #2c3e50;
  margin-top: auto;
}

footer a {
  transition: color 0.3s;
}

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

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .display-4 {
    font-size: 2.5rem;
  }

  .navbar-brand {
    font-size: 1.25rem;
  }

  .container {
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .display-4 {
    font-size: 1.75rem;
  }

  .lead {
    font-size: 1rem;
  }

  .btn {
    width: 100%;
    margin-bottom: 10px;
  }
}