:root {
  --primary: #3a7d44;
  --primary-dark: #2e5e33;
  --primary-darker: #1e4a24; 
  --primary-light: #e6f2d9;
  --white: #fff;
  --gray: #f5f5f5;
  --text: #333;
  --text-light: #666;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--white);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transition: opacity 0.5s ease;
}

body.loaded {
  opacity: 1;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header-content {
  display: flex;
  align-items: center;
  position: relative;
  padding: 1rem 0;
}

.header-center {
  flex: 1;
  text-align: center;
  margin: 0 auto;
}

.back-button {
  position: absolute;
  left: 20px;
  color: var(--primary-dark);
  font-size: 1.5rem;
  padding: 0.5rem;
  border-radius: 50%;
  transition: all 0.3s ease;
  z-index: 1;
}

.back-button:hover {
  background-color: var(--primary-light);
  transform: translateX(-3px);
}

#restaurantLogo {
  height: 80px;
  width: auto;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#restaurantName {
  color: var(--primary-dark);
  font-size: 1.8rem;
  margin: 0;
}

.allergen-section {
  max-width: 800px;
  margin: 0.5rem auto 2rem;
  padding: 1.5rem;
  background-color: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

h2 {
  color: var(--primary-dark);
  text-align: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--primary);
  margin: 0.5rem auto 0;
}

.filter-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.filter-group label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: var(--white);
  border: 2px solid var(--primary-darker);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin: 0;
  text-align: center;
  position: relative;
}

.filter-group label:hover {
  border-color: var(--primary-dark);
  background-color: var(--primary-light);
}

.filter-group label.selected {
  background-color: var(--primary);
  border-color: var(--primary-darker); 
  color: var(--white);
}

.filter-group input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  margin: 0;
  cursor: pointer;
}

button[type="submit"] {
  display: block;
  width: 100%;
  max-width: 300px;
  margin: 1.5rem auto 0;
  padding: 1rem;
  background-color: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 8px rgba(58, 125, 68, 0.2);
}

button[type="submit"]:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(58, 125, 68, 0.3);
}


footer {
  background-color: var(--primary-dark);
  color: var(--white);
  text-align: center;
  padding: 1.5rem;
  margin-top: auto;
}


@media (max-width: 768px) {
  .filter-group {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .header-content {
    padding: 1rem;
  }
  
  .back-button {
    position: static;
    margin-right: 1rem;
  }
}

@media (max-width: 480px) {
  .filter-group {
    grid-template-columns: 1fr;
  }
  
  .allergen-section {
    padding: 1rem;
    margin: 0.5rem;
  }
  
  .header-center {
    text-align: left;
    padding-left: 1rem;
  }
}