/* Sports Gear Resale Value Checker Styles */
:root {
  --color-bg: #f8f9fa;
  --color-surface: #ffffff;
  --color-primary: #2d5a27;
  --color-primary-hover: #1e3d1b;
  --color-secondary: #4a7c59;
  --color-accent: #d4a843;
  --color-text: #2c3e50;
  --color-text-light: #5a6c7d;
  --color-border: #e0e6ed;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-error: #dc3545;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --max-width: 1200px;
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  color: var(--color-primary-hover);
}

img {
  max-width: 100%;
  height: auto;
}

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

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.main-nav {
  display: flex;
  gap: 24px;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  font-weight: 800;
}

.hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 40px 0;
}

/* Checker Panel */
.checker-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: 40px;
}

.checker-header {
  background: var(--color-primary);
  color: white;
  padding: 24px 32px;
}

.checker-header h2 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.checker-header p {
  opacity: 0.9;
  font-size: 0.95rem;
}

.checker-body {
  padding: 32px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-group label .optional {
  font-weight: 400;
  color: var(--color-text-light);
  font-size: 0.85rem;
}

.form-group input,
.form-group select {
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
  background: var(--color-surface);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

/* Condition Selector */
.condition-selector {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.condition-btn {
  padding: 10px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.condition-btn:hover {
  border-color: var(--color-secondary);
}

.condition-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Calculate Button */
.btn-calculate {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
  width: 100%;
}

.btn-calculate:hover {
  background: var(--color-primary-hover);
}

/* Results */
.results {
  margin-top: 32px;
  padding: 24px;
  background: #f0f7f0;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-success);
  display: none;
}

.results.visible {
  display: block;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.results-header h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
}

.result-range {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  text-align: center;
  padding: 20px 0;
}

.result-range .currency {
  font-size: 1.25rem;
  vertical-align: super;
}

.result-range .separator {
  color: var(--color-text-light);
  font-weight: 400;
  margin: 0 8px;
}

.result-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.result-detail {
  text-align: center;
}

.result-detail-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.result-detail-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.btn-action {
  padding: 10px 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}

.btn-action:hover {
  border-color: var(--color-primary);
  background: #f0f7f0;
}

/* Info Sections */
.info-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.info-section h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.info-section h3 {
  font-size: 1.125rem;
  margin: 24px 0 12px;
  color: var(--color-text);
}

.info-section p {
  margin-bottom: 16px;
  color: var(--color-text-light);
}

/* Condition Guide */
.condition-guide {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.condition-card {
  padding: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.condition-card.excellent {
  background: #f0f7f0;
  border-color: var(--color-success);
}

.condition-card.good {
  background: #fff8e6;
  border-color: var(--color-warning);
}

.condition-card.fair {
  background: #fff3e6;
  border-color: #ff9800;
}

.condition-card.poor {
  background: #ffe6e6;
  border-color: var(--color-error);
}

.condition-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.condition-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Category Notes */
.category-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.category-note {
  padding: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.category-note h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-secondary);
}

.category-note p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Tips List */
.tips-list {
  list-style: none;
  padding: 0;
}

.tips-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 12px;
}

.tips-list li:last-child {
  border-bottom: none;
}

.tips-list .tip-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.comparison-table th,
.comparison-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-bg);
  font-weight: 600;
  font-size: 0.9rem;
}

.comparison-table td {
  font-size: 0.9rem;
}

.comparison-table tr:hover {
  background: var(--color-bg);
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.faq-item p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* Ad Slot Placeholder */
.ad-slot {
  background: var(--color-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
  margin: 24px 0;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.footer-section h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section li {
  margin-bottom: 8px;
}

.footer-section a {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-text);
  color: white;
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.toast.visible {
  transform: translateY(0);
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .checker-body {
    padding: 20px;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .result-range {
    font-size: 1.5rem;
  }
  
  .main-nav {
    display: none;
  }
  
  .header-inner {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 40px 0;
  }
  
  .info-section {
    padding: 20px;
  }
  
  .condition-guide {
    grid-template-columns: 1fr;
  }
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .ad-slot,
  .action-buttons,
  .btn-calculate {
    display: none;
  }
  
  .checker-panel {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .results {
    display: block !important;
    border: 1px solid #ccc;
  }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease forwards;
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}