/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --primary-color: #3C2415;
  --secondary-color: #6F4E37;
  --accent-color: #A67B5B;
  --accent-light: #C4915C;
  --background-color: #E6D5AA;
  --surface-color: #ffffff;
  --text-primary: #3C2415;
  --text-secondary: #6F4E37;
  --text-muted: #A67B5B;
  --border-color: #C4915C;
  --shadow-color: rgba(60, 36, 21, 0.1);
  --overlay-color: rgba(60, 36, 21, 0.8);
  
  /* 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;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px var(--shadow-color);
  --shadow-md: 0 4px 6px var(--shadow-color);
  --shadow-lg: 0 10px 15px var(--shadow-color);
  --shadow-xl: 0 20px 25px var(--shadow-color);
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-color: #E6D5AA;
  --secondary-color: #C4915C;
  --accent-color: #A67B5B;
  --accent-light: #6F4E37;
  --background-color: #1a1a1a;
  --surface-color: #2d2d2d;
  --text-primary: #E6D5AA;
  --text-secondary: #C4915C;
  --text-muted: #A67B5B;
  --border-color: #6F4E37;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --overlay-color: rgba(0, 0, 0, 0.8);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  transition: background-color var(--transition-medium), color var(--transition-medium);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background-color: var(--surface-color);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: nowrap;
  white-space: nowrap;
}

.logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
  display: block;
}

.logo-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.header-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.menu-nav {
  margin-top: var(--spacing-sm);
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.menu-nav .nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  background: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  min-width: 100px;
}

.menu-nav .nav-item:hover,
.menu-nav .nav-item.active {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.menu-nav .nav-icon {
  font-size: 1.2rem;
}

.menu-nav .nav-text {
  font-size: 0.9rem;
  font-weight: 600;
}

.theme-toggle,
.language-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-width: 36px;
  height: 36px;
}

.theme-icon {
  font-size: 1rem;
}

.theme-toggle .theme-icon {
  font-size: 1rem;
}

.language-toggle .language-text {
  font-size: 0.7rem;
}

.theme-toggle:hover,
.language-toggle:hover {
  background-color: var(--accent-color);
  color: white;
  transform: translateY(-2px);
}

.theme-toggle:active,
.language-toggle:active {
  transform: translateY(0);
}

/* Main Content */
.main {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* Welcome Section */
.welcome-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.welcome-content {
  max-width: 600px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
  line-height: 1.3;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.section-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.welcome-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-logo {
  max-width: 300px;
  width: 100%;
  height: auto;
  object-fit: contain;
  animation: bounce 2s infinite;
  filter: drop-shadow(0 4px 8px var(--shadow-color));
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-20px);
  }
  60% {
    transform: translateY(-10px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 48px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-medium);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(60, 36, 21, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  color: white;
  box-shadow: 0 4px 12px rgba(166, 123, 91, 0.3);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--accent-color));
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(166, 123, 91, 0.4);
}

.btn-danger {
  background-color: #dc3545;
  color: white;
}

.btn-danger:hover {
  background-color: #c82333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn .icon {
  margin-right: var(--spacing-xs);
  font-size: 1rem;
}

.btn .icon:only-child {
  margin-right: 0;
}

/* Form Styles */
.form-container {
  background: linear-gradient(135deg, var(--surface-color) 0%, rgba(255, 255, 255, 0.95) 100%);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 8px 32px rgba(60, 36, 21, 0.12), 0 2px 8px rgba(60, 36, 21, 0.08);
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid rgba(196, 145, 92, 0.2);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.form-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--accent-light));
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.pet-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.form-progress {
  display: grid;
  grid-template-columns: repeat(3, minmax(80px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-medium);
  background: var(--surface-color);
  position: relative;
}

.progress-step .step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  background: var(--surface-color);
  transition: all var(--transition-medium);
}

.progress-step.active {
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.15);
  background: linear-gradient(135deg, rgba(60, 36, 21, 0.05), rgba(166, 123, 91, 0.05));
  transform: translateY(-2px);
}

.progress-step.active .step-number {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-color: var(--primary-color);
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.2);
}

.progress-step.completed {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: linear-gradient(135deg, rgba(166, 123, 91, 0.08), rgba(196, 145, 92, 0.05));
}

.progress-step.completed .step-number {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  color: white;
  border-color: var(--accent-color);
}

.helper-text {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.validation-message {
  min-height: 1.2rem;
  font-size: 0.9rem;
  margin-top: var(--spacing-xs);
}

.validation-message.error {
  color: #d9534f;
}

.validation-message.success {
  color: #28a745;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.label-icon {
  font-size: 1.2rem;
}

.form-input {
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--surface-color), rgba(255, 255, 255, 0.8));
  transition: all var(--transition-medium);
  box-shadow: 0 2px 4px rgba(60, 36, 21, 0.05);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(60, 36, 21, 0.15), 0 4px 12px rgba(60, 36, 21, 0.1);
  background: var(--surface-color);
  transform: translateY(-1px);
}

.form-input::placeholder {
  color: var(--text-muted);
}

/* Radio Groups */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.radio-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-medium);
  position: relative;
  background: var(--surface-color);
  overflow: hidden;
}

.radio-option::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  transition: left var(--transition-medium);
  z-index: 0;
}

.radio-option:hover::before {
  left: 0;
}

.radio-option:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(166, 123, 91, 0.3);
  border-color: var(--accent-color);
}

.radio-option:hover .radio-text,
.radio-option:hover .radio-icon,
.radio-option:hover .activity-description {
  position: relative;
  z-index: 1;
}

.radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-custom {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  position: relative;
  transition: all var(--transition-fast);
}

.radio-custom::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--primary-color);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform var(--transition-fast);
}

.radio-option input[type="radio"]:checked ~ .radio-custom::after {
  transform: translate(-50%, -50%) scale(1);
}

.radio-option input[type="radio"]:checked ~ .radio-custom {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.2);
}

.radio-option input[type="radio"]:checked ~ .radio-custom::after {
  background-color: white;
}

.radio-option:has(input[type="radio"]:checked) {
  background: linear-gradient(135deg, rgba(60, 36, 21, 0.1), rgba(111, 78, 55, 0.05));
  border-color: var(--primary-color);
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.15);
}

.radio-text {
  font-weight: 600;
  flex: 1;
}

.radio-icon {
  font-size: 1.5rem;
}

.activity-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

.radio-option:hover .activity-description {
  color: rgba(255, 255, 255, 0.8);
}

/* Slider Styles */
.slider-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 10px;
  border-radius: var(--border-radius-md);
  background: linear-gradient(90deg, var(--border-color), var(--accent-color));
  outline: none;
  transition: all var(--transition-medium);
  box-shadow: inset 0 2px 4px rgba(60, 36, 21, 0.1);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.3), 0 0 0 3px rgba(255, 255, 255, 0.8);
  transition: all var(--transition-medium);
  border: 2px solid white;
}

.slider::-webkit-slider-thumb:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.4), 0 0 0 3px rgba(255, 255, 255, 0.9);
}

.slider::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.3), 0 0 0 3px rgba(255, 255, 255, 0.8);
  transition: all var(--transition-medium);
}

.slider::-moz-range-thumb:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.4), 0 0 0 3px rgba(255, 255, 255, 0.9);
}

.slider-value {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
  background: linear-gradient(135deg, rgba(60, 36, 21, 0.05), rgba(166, 123, 91, 0.05));
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  border: 2px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.1);
  transition: all var(--transition-medium);
}

.slider-value:hover {
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.15);
  transform: translateY(-2px);
}

/* Form Actions */
.form-actions {
  display: flex;
  justify-content: center;
  padding-top: var(--spacing-lg);
}

/* Results Section */
.results-container {
  background: linear-gradient(135deg, var(--surface-color) 0%, rgba(255, 255, 255, 0.95) 100%);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 8px 32px rgba(60, 36, 21, 0.12), 0 2px 8px rgba(60, 36, 21, 0.08);
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid rgba(196, 145, 92, 0.2);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.results-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--accent-light));
  border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.pet-summary {
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light), var(--primary-color));
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  color: white;
  box-shadow: 0 6px 20px rgba(166, 123, 91, 0.3);
  position: relative;
  overflow: hidden;
}

.pet-summary::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(180deg); }
}

.pet-info {
  text-align: center;
}

.pet-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.pet-details {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  font-size: 1.1rem;
}

.calculation-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.result-card {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  color: white;
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  transition: all var(--transition-medium);
  box-shadow: 0 4px 16px rgba(60, 36, 21, 0.25);
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.result-card:hover::before {
  left: 100%;
}

.result-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 8px 24px rgba(60, 36, 21, 0.35);
}

.result-icon {
  font-size: 2.5rem;
  opacity: 0.95;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
  transition: transform var(--transition-medium);
}

.result-card:hover .result-icon {
  transform: scale(1.1) rotate(5deg);
}

.result-content {
  flex: 1;
}

.result-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.result-value {
  font-size: 2.5rem;
  font-weight: 800;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  letter-spacing: -0.5px;
}

/* Adjustment Section */
.adjustment-section {
  background: linear-gradient(135deg, rgba(230, 213, 170, 0.3), rgba(255, 255, 255, 0.5));
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border: 1px solid rgba(196, 145, 92, 0.2);
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.08);
}

.adjustment-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.adjustment-description {
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.adjustment-controls {
  margin-bottom: var(--spacing-xl);
}

.adjustment-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.adjustment-label {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
}

.adjustment-slider {
  background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
}

.adjusted-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.adjusted-card {
  background: linear-gradient(135deg, var(--surface-color), rgba(255, 255, 255, 0.8));
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-medium);
  box-shadow: 0 2px 8px rgba(60, 36, 21, 0.1);
  position: relative;
  overflow: hidden;
}

.adjusted-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}

.adjusted-card:hover::before {
  transform: scaleX(1);
}

.adjusted-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(60, 36, 21, 0.2);
  background: linear-gradient(135deg, rgba(60, 36, 21, 0.03), rgba(166, 123, 91, 0.03));
}

.adjusted-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
}

.adjusted-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-color);
  text-shadow: 0 1px 2px rgba(60, 36, 21, 0.1);
  transition: transform var(--transition-medium);
}

.adjusted-card:hover .adjusted-value {
  transform: scale(1.1);
}

/* Results Actions */
.results-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Content Pages */
.content-page {
  padding: var(--spacing-xxl) 0;
}

.content-card {
  background: linear-gradient(135deg, var(--surface-color), rgba(255, 255, 255, 0.9));
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xxl);
  box-shadow: 0 10px 30px rgba(60, 36, 21, 0.15);
  border: 1px solid rgba(196, 145, 92, 0.25);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.content-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.3), transparent 40%);
  pointer-events: none;
}

.content-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.content-header h1 {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.content-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.content-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}

.faq-item {
  background: var(--surface-color);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(196, 145, 92, 0.3);
  box-shadow: 0 5px 18px rgba(60, 36, 21, 0.1);
  overflow: hidden;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.faq-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(60, 36, 21, 0.2);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform var(--transition-medium);
  color: var(--primary-color);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium) ease;
  padding: 0 var(--spacing-lg);
  color: var(--text-secondary);
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: var(--spacing-lg);
}

.lang {
  display: none;
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.lang strong {
  color: var(--primary-color);
}

.lang.active {
  display: block;
}

.policy-section {
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid rgba(196, 145, 92, 0.2);
  padding-bottom: var(--spacing-xl);
}

.policy-section:last-child {
  border-bottom: none;
}

.policy-section h2 {
  font-size: 1.6rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.policy-section ul {
  padding-left: var(--spacing-xl);
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-box {
  background: rgba(60, 36, 21, 0.05);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid rgba(196, 145, 92, 0.3);
  margin-top: var(--spacing-lg);
}

.contact-box a {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
}

.contact-box a:hover {
  text-decoration: underline;
}

/* Saved Results */
.saved-container {
  background-color: var(--surface-color);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
}

.saved-results-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.no-results {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
  font-size: 1.1rem;
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
}

.no-results p {
  margin: 0;
}

.no-results .btn {
  min-width: 200px;
}

.saved-result-item {
  background-color: var(--background-color);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-fast);
}

.saved-result-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.saved-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.saved-pet-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
}

.saved-date {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.saved-result-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.saved-detail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.saved-detail-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.saved-detail-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary-color);
}

.saved-result-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

.btn-small {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.9rem;
  min-height: 36px;
}

.saved-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--overlay-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background-color: var(--surface-color);
  color: var(--text-primary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary-color);
  animation: slideIn 0.3s ease;
  max-width: 300px;
}

.toast.success {
  border-left-color: #28a745;
}

.toast.error {
  border-left-color: #dc3545;
}

.toast.warning {
  border-left-color: #ffc107;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Footer */
.footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.footer-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-text a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.footer-text a:hover {
  text-decoration: underline;
}

.footer-links {
  margin-top: var(--spacing-sm);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-links span {
  color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 480px) {
  .logo {
    font-size: 0.9rem;
    gap: var(--spacing-xs);
  }
  
  .logo-img {
    height: 22px;
  }
  
  .logo-text {
    font-size: 0.75rem;
    display: block;
  }
  
  .header-controls {
    gap: var(--spacing-xs);
  }
  
  .theme-toggle,
  .language-toggle {
    min-width: 32px;
    height: 32px;
    padding: var(--spacing-xs);
    font-size: 0.65rem;
  }
  
  .theme-toggle .theme-icon {
    font-size: 0.9rem;
  }
  
  .language-toggle .language-text {
    font-size: 0.65rem;
  }
  
  .menu-nav {
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
  }
  
  .menu-nav .nav-item {
    min-width: 70px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .menu-nav .nav-icon {
    font-size: 1rem;
  }
  
  .menu-nav .nav-text {
    font-size: 0.75rem;
  }
  
  .hero-logo {
    max-width: 200px;
  }
}

@media (min-width: 481px) and (max-width: 767px) {
  .logo {
    font-size: 1.1rem;
  }
  
  .logo-img {
    height: 28px;
  }
  
  .theme-toggle,
  .language-toggle {
    min-width: 34px;
    height: 34px;
  }
  
  .hero-logo {
    max-width: 250px;
  }
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .logo {
    font-size: 1.3rem;
  }
  
  .logo-img {
    height: 36px;
  }
  
  .welcome-section {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }
  
  .section-title {
    font-size: 2rem;
    line-height: 1.3;
  }
  
  .hero-logo {
    max-width: 350px;
  }
  
  .radio-group {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .radio-option {
    flex: 1;
    min-width: 200px;
  }
  
  .menu-nav {
    gap: var(--spacing-xl);
  }
  
  .menu-nav .nav-item {
    min-width: 100px;
  }
}

@media (min-width: 1024px) {
  .main {
    padding: var(--spacing-xxl) 0;
  }
  
  .form-container,
  .results-container,
  .saved-container {
    padding: var(--spacing-xxl);
  }
  
  .calculation-results {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .adjusted-results {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for better accessibility */
button:focus,
input:focus,
select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow-color: rgba(0, 0, 0, 0.5);
    --border-color: currentColor;
  }
}

/* Print styles */
@media print {
  .header,
  .bottom-nav,
  .loading-overlay,
  .toast-container {
    display: none !important;
  }
  
  .main {
    padding: 0;
  }
  
  .container {
    max-width: none;
    padding: 0;
  }
  
  .results-container,
  .saved-container {
    box-shadow: none;
    border: 1px solid #000;
  }
}