/* Purchase Comparison Scorecard - Styles */
:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-secondary: #059669;
  --color-secondary-dark: #047857;
  --color-danger: #dc2626;
  --color-danger-dark: #b91c1c;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-focus: #3b82f6;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--color-primary);
  color: white;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus {
  top: 16px;
}

.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;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.2rem;
}
.logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}
.main-nav ul {
  display: flex;
  list-style: none;
  gap: 24px;
}
.main-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 4px 0;
}
.main-nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  padding: 64px 0 48px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s ease;
  font-family: inherit;
  line-height: 1.4;
}
.btn:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  text-decoration: none;
  color: white;
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-surface-alt);
  border-color: var(--color-text-muted);
  text-decoration: none;
}
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-ghost:hover {
  background: var(--color-primary-light);
  text-decoration: none;
}
.btn-danger {
  background: transparent;
  color: var(--color-danger);
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background: #fef2f2;
  text-decoration: none;
}
.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* Scorecard Section */
.scorecard-section {
  padding: 48px 0;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.section-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
}
.preset-select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}
.preset-select:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 1px;
}

.scorecard-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  align-items: start;
}

/* Options */
.options-bar {
  margin-bottom: 24px;
}
.field-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}
.options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}
.option-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.option-row input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--color-surface);
}
.option-row input:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 0;
}
.btn-remove {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.btn-remove:hover {
  background: #fef2f2;
  border-color: var(--color-danger);
  color: var(--color-danger);
}

/* Criteria */
.criteria-wrap {
  margin-bottom: 32px;
}
.criteria-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.criteria-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
}
.criteria-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.criterion-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.criterion-row input[type="text"] {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
}
.criterion-row input[type="number"] {
  width: 60px;
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  text-align: center;
}
.criterion-row input:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 0;
}
.weight-badge {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 50px;
  text-align: right;
}

/* Scores Table */
.scores-wrap {
  margin-bottom: 32px;
}
.scores-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.scores-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.scores-table th,
.scores-table td {
  padding: 10px 12px;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
  white-space: nowrap;
}
.scores-table th {
  background: var(--color-surface-alt);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}
.scores-table th:first-child,
.scores-table td:first-child {
  text-align: left;
  font-weight: 600;
  position: sticky;
  left: 0;
  background: var(--color-surface);
  z-index: 1;
}
.scores-table th:first-child {
  background: var(--color-surface-alt);
}
.scores-table tbody tr:hover td {
  background: #f8fafc;
}
.scores-table input[type="number"] {
  width: 52px;
  padding: 4px 6px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.9rem;
  text-align: center;
}
.scores-table input:focus {
  outline: 2px solid var(--color-focus);
}

/* Results */
.results-wrap {
  margin-bottom: 32px;
}
.results-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.results-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.result-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.result-card.winner {
  border-color: var(--color-secondary);
  background: #f0fdf4;
}
.result-rank {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-text-muted);
  min-width: 36px;
  text-align: center;
}
.result-card.winner .result-rank {
  color: var(--color-secondary);
}
.result-info {
  flex: 1;
}
.result-name {
  font-weight: 700;
  font-size: 1.05rem;
}
.result-detail {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.result-score {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
}
.result-card.winner .result-score {
  color: var(--color-secondary);
}
.winner-badge {
  display: inline-block;
  background: var(--color-secondary);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-left: 8px;
}
.empty-results {
  padding: 32px;
  text-align: center;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
}

/* Actions */
.actions-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

/* Sidebar */
.scorecard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}
.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}
.sidebar-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}
.sidebar-card ul {
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.sidebar-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  font-size: 0.88rem;
}
.sidebar-card dt {
  font-weight: 700;
  color: var(--color-primary);
}
.sidebar-card dd {
  color: var(--color-text-secondary);
}
.last-saved {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* Info Sections */
.info-section {
  padding: 56px 0;
}
.info-section-alt {
  background: var(--color-surface);
}
.info-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
}
.section-intp {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: -16px auto 32px;
  font-size: 1rem;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}
.info-section-alt .info-card {
  background: var(--color-bg);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.info-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.info-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.mistakes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.mistake-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  border-left: 4px solid var(--color-danger);
}
.info-section-alt .mistake-card {
  background: var(--color-bg);
}
.mistake-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-danger);
}
.mistake-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.assumptions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.assumption-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}
.info-section-alt .assumption-card {
  background: var(--color-bg);
}
.assumption-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.assumption-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Example Table */
.example-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}
.example-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.example-table th,
.example-table td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}
.example-table th {
  background: var(--color-surface-alt);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.example-table th:first-child,
.example-table td:first-child {
  text-align: left;
  font-weight: 600;
}
.total-row td {
  background: var(--color-primary-light);
  font-weight: 700;
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}
.faq-list details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}
.info-section-alt .faq-list details {
  background: var(--color-bg);
}
.faq-list summary {
  padding: 16px 20px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--color-text-muted);
  font-weight: 400;
}
.faq-list details[open] summary::after {
  content: '−';
}
.faq-list details p {
  padding: 0 20px 16px;
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 32px 0 24px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.footer-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.footer-tagline a {
  color: var(--color-primary);
  font-weight: 500;
}
.footer-nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}
.footer-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}
.footer-nav a:hover {
  color: var(--color-primary);
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-text);
  color: white;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
  pointer-events: none;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* Print */
@media print {
  .site-header,
  .site-footer,
  .hero,
  .actions-bar,
  .scorecard-sidebar,
  .presets,
  .btn-remove,
  .criteria-header .btn,
  .options-bar .btn,
  .scores-table input,
  .info-section {
    display: none !important;
  }
  .scorecard-layout {
    display: block;
  }
  .result-card.winner {
    border: 2px solid #000;
  }
  body {
    background: white;
    color: black;
  }
  .scores-table th:first-child,
  .scores-table td:first-child {
    position: static;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .scorecard-layout {
    grid-template-columns: 1fr;
  }
  .scorecard-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 40px 0 32px;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .hero-sub {
    font-size: 1rem;
  }
  .main-nav ul {
    gap: 16px;
  }
  .main-nav a {
    font-size: 0.88rem;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .criterion-row {
    flex-wrap: wrap;
  }
  .result-card {
    flex-wrap: wrap;
  }
  .actions-bar {
    flex-direction: column;
  }
  .actions-bar .btn {
    width: 100%;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-nav ul {
    flex-wrap: wrap;
    gap: 12px;
  }
}

@media (max-width: 400px) {
  .logo-text {
    display: none;
  }
}


/* 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;
}