:root {
  --primary-color: #4CAF50;
  --secondary-color: #2196F3;
  --accent-color: #FF5722;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --gray-color: #6c757d;
  --light-gray: #e9ecef;
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Roboto', sans-serif;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: #f5f5f5;
  color: var(--dark-color);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Header Styles */
.header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 1rem 0;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 100;
}

.header h1 {
  font-size: 2rem;
  margin: 0;
  font-weight: 700;
  letter-spacing: 1px;
}

/* Ad Space */
.ad-space {
  background-color: var(--light-gray);
  border-radius: var(--border-radius);
  padding: 15px;
  margin: 20px 0;
  text-align: center;
  border: 1px dashed var(--gray-color);
}

.ad-space p {
  margin: 5px 0;
  color: var(--gray-color);
}

/* Tool Grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.tool-card {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  color: var(--dark-color);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.tool-header {
  padding: 20px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  text-align: center;
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: 10px;
}

.tool-name {
  font-size: 1.5rem;
  font-weight: 600;
}

.tool-description {
  padding: 20px;
  flex-grow: 1;
  text-align: center;
}

/* Tool Content Styles */
.tool-content {
  padding: 30px 20px;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin: 20px 0;
}

.tool-content h2 {
  color: var(--primary-color);
  margin-bottom: 20px;
  text-align: center;
  font-size: 1.8rem;
}

.tool-content p {
  margin-bottom: 15px;
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark-color);
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--light-gray);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  transition: var(--transition);
  text-decoration: none;
}

.btn:hover {
  background-color: #3d8b40;
  transform: translateY(-2px);
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-secondary {
  background-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #0b7dda;
}

.btn-accent {
  background-color: var(--accent-color);
}

.btn-accent:hover {
  background-color: #e64a19;
}

/* Results Section */
.results-section {
  background-color: var(--light-color);
  border-radius: var(--border-radius);
  padding: 20px;
  margin-top: 30px;
  border-left: 4px solid var(--primary-color);
}

.results-section h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
}

/* Progress Tracker */
.progress-container {
  margin: 20px 0;
}

.progress-bar {
  height: 20px;
  background-color: var(--light-gray);
  border-radius: 10px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  border-radius: 10px;
  transition: width 0.5s ease;
}

/* Community Section */
.community-posts {
  margin-top: 30px;
}

.post {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.post-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.post-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
  color: var(--dark-color);
  font-weight: bold;
}

.post-author {
  font-weight: 600;
}

.post-date {
  color: var(--gray-color);
  font-size: 0.9rem;
  margin-left: auto;
}

.post-content {
  margin-bottom: 15px;
}

.post-actions {
  display: flex;
  gap: 15px;
}

.post-action {
  display: flex;
  align-items: center;
  color: var(--gray-color);
  cursor: pointer;
  transition: var(--transition);
}

.post-action:hover {
  color: var(--primary-color);
}

.post-action i {
  margin-right: 5px;
}

/* Calculator Styles */
.calculator-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .calculator-section {
    grid-template-columns: 1fr 1fr;
  }
}

.ingredient-list {
  margin-top: 20px;
}

.ingredient-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--light-gray);
}

.ingredient-name {
  font-weight: 500;
}

.ingredient-amount {
  color: var(--primary-color);
  font-weight: 600;
}

/* Diagnostic Tool */
.question-container {
  margin-bottom: 30px;
}

.options-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 15px;
}

@media (min-width: 576px) {
  .options-container {
    grid-template-columns: 1fr 1fr;
  }
}

.option-item {
  padding: 15px;
  border: 1px solid var(--light-gray);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
}

.option-item:hover {
  background-color: var(--light-color);
  border-color: var(--primary-color);
}

.option-item.selected {
  background-color: rgba(76, 175, 80, 0.1);
  border-color: var(--primary-color);
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: white;
  display: flex;
  justify-content: space-around;
  padding: 12px 0;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--gray-color);
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-item i {
  font-size: 1.5rem;
  margin-bottom: 5px;
}

.nav-item.active {
  color: var(--primary-color);
}

.nav-item:hover {
  color: var(--primary-color);
}

/* Manus Badge */
.manus-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 30px 0;
  padding-bottom: 70px;
  color: var(--gray-color);
  font-size: 0.9rem;
}

.manus-badge img {
  height: 20px;
  margin-right: 8px;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .header h1 {
    font-size: 1.8rem;
  }
  
  .tool-grid {
    grid-template-columns: 1fr;
  }
  
  .tool-content {
    padding: 20px 15px;
  }
}

/* Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}