:root {
    /* Color variables */
    --color-primary: #4caf50;
    --color-primary-dark: #388e3c;
    --color-primary-light: #a5d6a7;
    --color-secondary: #ff9800;
    --color-secondary-dark: #f57c00;
    --color-secondary-light: #ffe0b2;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-light: #f5f5f5;
    --color-border: #e0e0e0;
    --color-error: #f44336;
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-info: #2196f3;
    
    /* Macro colors */
    --color-protein: #ff5722;
    --color-carbs: #2196f3;
    --color-fat: #ffc107;
    
    /* BMI category colors */
    --color-underweight: #64b5f6;
    --color-normal: #81c784;
    --color-overweight: #ffb74d;
    --color-obese: #e57373;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-circle: 50%;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1), 0 3px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 14px 28px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
  }
  
  /* Dark mode variables */
  .dark-mode {
    --color-text: #f5f5f5;
    --color-text-light: #bdbdbd;
    --color-background: #121212;
    --color-background-light: #1e1e1e;
    --color-border: #333333;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.6);
    --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.6), 0 2px 4px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5), 0 3px 6px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 14px 28px rgba(0, 0, 0, 0.6), 0 10px 10px rgba(0, 0, 0, 0.5);
  }
  
  /* Reset and base styles */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    font-size: 16px;
    scroll-behavior: smooth;
  }
  
  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color var(--transition-normal), color var(--transition-normal);
  }
  
  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  a:hover {
    color: var(--color-primary-dark);
  }
  
  img {
    max-width: 100%;
    height: auto;
  }
  
  /* Typography */
  h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  h4 {
    font-size: 1.25rem;
  }
  
  p {
    margin-bottom: var(--spacing-md);
  }
  
  /* Layout */
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
  }
  
  .section-padding {
    padding: var(--spacing-xxl) 0;
  }
  
  .bg-light {
    background-color: var(--color-background-light);
  }
  
  .text-center {
    text-align: center;
  }
  
  .mt-4 {
    margin-top: var(--spacing-xl);
  }
  
  /* Header */
  header {
    padding: var(--spacing-md) 0;
    background-color: var(--color-background);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  }
  
  header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .logo {
    display: flex;
    align-items: center;
  }
  
  .logo a {
    display: flex;
    align-items: center;
    color: var(--color-text);
    text-decoration: none;
  }
  
  .logo-icon {
    margin-right: var(--spacing-sm);
    color: var(--color-primary);
  }
  
  .logo h1 {
    font-size: 1.5rem;
    margin-bottom: 0;
  }
  
  nav {
    display: flex;
    align-items: center;
  }
  
  .theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-circle);
    transition: background-color var(--transition-fast);
  }
  
  .theme-toggle:hover {
    background-color: var(--color-background-light);
  }
  
  .sun-icon, .moon-icon {
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }
  
  .dark-mode .sun-icon {
    opacity: 1;
    transform: rotate(0);
  }
  
  .dark-mode .moon-icon {
    opacity: 0;
    transform: rotate(90deg);
    position: absolute;
  }
  
  .sun-icon {
    opacity: 0;
    transform: rotate(-90deg);
    position: absolute;
  }
  
  .moon-icon {
    opacity: 1;
    transform: rotate(0);
  }
  
  /* Unit toggle */
  .unit-toggle {
    display: flex;
    align-items: center;
    margin-right: var(--spacing-md);
  }
  
  .unit-toggle span {
    font-size: 0.875rem;
    color: var(--color-text-light);
  }
  
  .switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
    margin: 0 var(--spacing-sm);
  }
  
  .switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    transition: var(--transition-fast);
    border-radius: 24px;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-background);
    transition: var(--transition-fast);
    border-radius: 50%;
  }
  
  input:checked + .slider {
    background-color: var(--color-primary);
  }
  
  input:checked + .slider:before {
    transform: translateX(24px);
  }
  
  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: 1rem;
    text-align: center;
  }
  
  .btn svg {
    margin-right: var(--spacing-sm);
  }
  
  .btn-primary {
    background-color: var(--color-primary);
    color: white;
  }
  
  .btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: white;
  }
  
  .btn-secondary {
    background-color: var(--color-background-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
  }
  
  .btn-secondary:hover {
    background-color: var(--color-border);
  }
  
  .cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  
  .link-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    font-size: 0.875rem;
    padding: 0;
    text-decoration: underline;
    transition: color var(--transition-fast);
  }
  
  .link-btn:hover {
    color: var(--color-primary-dark);
  }
  
  /* Hero section */
  .hero {
    padding: var(--spacing-xxl) 0;
    overflow: hidden;
  }
  
  .hero .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
  }
  
  .hero-content {
    flex: 1;
  }
  
  .hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
  }
  
  .hero-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
  }
  
  .hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
  }
  
  .calculator-preview {
    width: 100%;
    max-width: 400px;
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  }
  
  .calculator-preview:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
  }
  
  .preview-header {
    background-color: var(--color-background-light);
    padding: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
  }
  
  .preview-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-border);
  }
  
  .preview-dot:first-child {
    background-color: var(--color-error);
  }
  
  .preview-dot:nth-child(2) {
    background-color: var(--color-warning);
  }
  
  .preview-dot:nth-child(3) {
    background-color: var(--color-success);
  }
  
  .preview-content {
    padding: var(--spacing-lg);
  }
  
  .preview-result {
    text-align: center;
    margin-bottom: var(--spacing-lg);
  }
  
  .result-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
  }
  
  .result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
  }
  
  .preview-chart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .chart-segment {
    height: 30px;
    background-color: var(--color);
    width: var(--percent);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-sm);
    color: white;
    font-weight: 500;
    font-size: 0.875rem;
    transition: width var(--transition-slow);
  }
  
  /* Calculators overview */
  .calculators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
  }
  
  .calculator-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .calculator-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
  }
  
  .card-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
  }
  
  .calculator-card h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  .calculator-card p {
    color: var(--color-text-light);
    font-size: 0.875rem;
  }
  
  /* Features section */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
  }
  
  .feature-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  
  .feature-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .feature-item h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  .feature-item p {
    color: var(--color-text-light);
    font-size: 0.875rem;
  }
  
  /* Testimonials */
  .testimonials-slider {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
  }
  
  .testimonials-slider::-webkit-scrollbar {
    height: 6px;
  }
  
  .testimonials-slider::-webkit-scrollbar-track {
    background: transparent;
  }
  
  .testimonials-slider::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: 20px;
  }
  
  .testimonial-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    min-width: 300px;
    max-width: 400px;
    flex: 1;
  }
  
  .testimonial-content {
    margin-bottom: var(--spacing-md);
  }
  
  .testimonial-content p {
    font-style: italic;
    margin-bottom: 0;
  }
  
  .testimonial-author {
    display: flex;
    align-items: center;
  }
  
  .author-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-circle);
    background-color: var(--color-primary-light);
    margin-right: var(--spacing-md);
  }
  
  .author-info h4 {
    margin-bottom: 0;
    font-size: 1rem;
  }
  
  .author-info p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--color-text-light);
  }
  
  /* Footer */
  footer {
    background-color: var(--color-background-light);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
  }
  
  .footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
  }
  
  .footer-logo {
    display: flex;
    align-items: center;
    margin-right: var(--spacing-xl);
  }
  
  .footer-logo span {
    font-weight: 600;
    font-size: 1.25rem;
    margin-left: var(--spacing-sm);
  }
  
  .footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    flex: 1;
  }
  
  .footer-column h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
  }
  
  .footer-column ul {
    list-style: none;
  }
  
  .footer-column ul li {
    margin-bottom: var(--spacing-sm);
  }
  
  .footer-column ul li a {
    color: var(--color-text-light);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
  }
  
  .footer-column ul li a:hover {
    color: var(--color-primary);
  }
  
  .footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
  }
  
  .footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0;
  }
  
  /* Calculator page styles */
  .calculator-header {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background-color: var(--color-background-light);
  }
  
  .calculator-header h2 {
    margin-bottom: var(--spacing-sm);
  }
  
  .calculator-header p {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
  }
  
  .calculator-tabs {
    padding: var(--spacing-xl) 0;
  }
  
  .tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
  }
  
  .tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    transition: all var(--transition-fast);
  }
  
  .tab-btn:hover {
    color: var(--color-primary);
  }
  
  .tab-btn.active {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
  }
  
  .tab-content {
    margin-top: var(--spacing-lg);
  }
  
  .tab-pane {
    display: none;
  }
  
  .tab-pane.active {
    display: block;
    animation: fadeIn var(--transition-normal);
  }
  
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  
  .calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  
  .calculator-form {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
  }
  
  .calculator-form h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  .calculator-form p {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
  }
  
  .form-group {
    margin-bottom: var(--spacing-lg);
  }
  
  .form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
  }
  
  .input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
  }
  
  .input-with-icon input {
    width: 100%;
    padding: 0.75rem;
    padding-right: 3rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    background-color: var(--color-background);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
  }
  
  .input-with-icon input:focus {
    outline: none;
    border-color: var(--color-primary);
  }
  
  .input-with-icon input.error {
    border-color: var(--color-error);
  }
  
  .input-unit {
    right: 0.75rem;
    color: var(--color-text-light);
    font-size: 0.875rem;
  }
  
  select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    background-color: var(--color-background);
    color: var(--color-text);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    transition: border-color var(--transition-fast);
  }
  
  select:focus {
    outline: none;
    border-color: var(--color-primary);
  }
  
  .radio-group {
    display: flex;
    gap: var(--spacing-md);
  }
  
  .radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
  }
  
  .radio-label input {
    margin-right: var(--spacing-sm);
  }
  
  .tooltip {
    display: inline-flex;
    margin-left: var(--spacing-sm);
    position: relative;
    color: var(--color-text-light);
  }
  
  .tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-text);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 10;
    margin-bottom: var(--spacing-sm);
  }
  
  .tooltip:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: var(--color-text) transparent transparent transparent;
    margin-bottom: -5px;
    z-index: 10;
  }
  
  .calculator-results {
    display: flex;
    flex-direction: column;
  }
  
  .results-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  
  .results-card h3 {
    margin-bottom: var(--spacing-lg);
    text-align: center;
  }
  
  .result-item {
    margin-bottom: var(--spacing-lg);
    text-align: center;
  }
  
  .result-item.primary .result-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
  }
  
  .result-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
  }
  
  .result-unit {
    font-size: 1rem;
    color: var(--color-text-light);
  }
  
  .calorie-goals {
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
  }
  
  .calorie-goals h4 {
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-size: 1rem;
  }
  
  .goal-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }
  
  .goal-item:last-child {
    border-bottom: none;
  }
  
  .bmi-category {
    text-align: center;
    margin-bottom: var(--spacing-lg);
  }
  
  .category-label {
    font-weight: 500;
    margin-right: var(--spacing-sm);
  }
  
  .category-value {
    font-weight: 600;
  }
  
  .bmi-scale {
    display: flex;
    margin-top: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    overflow: hidden;
  }
  
  .scale-item {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-fast);
  }
  
  .scale-item[data-category="underweight"] {
    background-color: var(--color-underweight);
    color: white;
  }
  
  .scale-item[data-category="normal"] {
    background-color: var(--color-normal);
    color: white;
  }
  
  .scale-item[data-category="overweight"] {
    background-color: var(--color-overweight);
    color: white;
  }
  
  .scale-item[data-category="obese"] {
    background-color: var(--color-obese);
    color: white;
  }
  
  .scale-item.active {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
    z-index: 1;
  }
  
  .scale-range {
    font-size: 0.75rem;
    font-weight: 600;
  }
  
  .scale-label {
    font-size: 0.75rem;
  }
  
  .macro-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  
  .macro-result {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-fast);
  }
  
  .macro-result[data-macro="protein"] {
    background-color: rgba(255, 87, 34, 0.1);
  }
  
  .macro-result[data-macro="carbs"] {
    background-color: rgba(33, 150, 243, 0.1);
  }
  
  .macro-result[data-macro="fat"] {
    background-color: rgba(255, 193, 7, 0.1);
  }
  
  .macro-result:hover {
    transform: translateY(-3px);
  }
  
  .macro-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: var(--spacing-sm);
    color: white;
  }
  
  .macro-result[data-macro="protein"] .macro-icon {
    background-color: var(--color-protein);
  }
  
  .macro-result[data-macro="carbs"] .macro-icon {
    background-color: var(--color-carbs);
  }
  
  .macro-result[data-macro="fat"] .macro-icon {
    background-color: var(--color-fat);
  }
  
  .macro-info {
    display: flex;
    flex-direction: column;
  }
  
  .macro-label {
    font-size: 0.75rem;
    color: var(--color-text-light);
  }
  
  .macro-value {
    font-weight: 600;
    font-size: 1rem;
  }
  
  .macro-calories {
    font-size: 0.75rem;
    color: var(--color-text-light);
  }
  
  .macro-chart {
    height: 200px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .chart-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .macro-sliders {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .macro-slider {
    display: flex;
    flex-direction: column;
  }
  
  .macro-slider label {
    margin-bottom: var(--spacing-xs);
    display: flex;
    justify-content: space-between;
  }
  
  .total-percent {
    text-align: right;
    margin-top: var(--spacing-sm);
    font-weight: 500;
  }
  
  .water-visual {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .water-container {
    width: 100px;
    height: 200px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-md);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
  }
  
  .water-level {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background-color: #2196f3;
    transition: height 1s ease;
  }
  
  .water-equivalents {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
  }
  
  .water-equivalent {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .glass-icon, .bottle-icon {
    font-size: 1.5rem;
  }
  
  .result-actions {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
  }
  
  .custom-macros {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  /* Responsive styles */
  @media (max-width: 992px) {
    .hero .container {
      flex-direction: column;
    }
    
    .calculator-container {
      grid-template-columns: 1fr;
    }
    
    .macro-results {
      grid-template-columns: 1fr;
    }
  }
  
  @media (max-width: 768px) {
    html {
      font-size: 14px;
    }
    
    .cta-buttons {
      flex-direction: column;
    }
    
    .tabs {
      flex-wrap: nowrap;
      overflow-x: auto;
      padding-bottom: var(--spacing-md);
    }
    
    .tab-btn {
      white-space: nowrap;
    }
    
    .footer-content {
      flex-direction: column;
      gap: var(--spacing-lg);
    }
  }
  
  @media (max-width: 576px) {
    .calculators-grid {
      grid-template-columns: 1fr;
    }
    
    .features-grid {
      grid-template-columns: 1fr;
    }
    
    .unit-toggle {
      display: none;
    }
    
    .unit-toggle.mobile {
      display: flex;
      margin: var(--spacing-md) 0;
    }
  }