/* ============================================
   Hand Tool Ergonomic Grip Sizer — Styles
   ============================================ */

:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-surface-alt: #f3efe8;
  --color-text: #2c2824;
  --color-text-muted: #6b6358;
  --color-text-light: #9a9185;
  --color-primary: #b45e2e;
  --color-primary-hover: #9a4e24;
  --color-primary-light: #fdf0e8;
  --color-accent: #d4a056;
  --color-accent-light: #fdf6eb;
  --color-border: #e0d9cf;
  --color-border-light: #ede8e0;
  --color-success: #3a7d44;
  --color-success-light: #edf5ee;
  --color-warning: #b8860b;
  --color-warning-light: #fff8e1;
  --color-error: #c0392b;
  --color-error-light: #fdedec;
  --color-focus: #b45e2e;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1), 0 3px 8px rgba(0,0,0,0.06);

  --transition: 0.2s ease;
  --container-max: 1120px;
  --container-padding: 1.5rem;
}

/* Reset & Base */
*, *::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);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

/* Accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus {
  top: 0;
}

.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 styles */
:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}
.logo-icon {
  color: var(--color-primary);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}
.main-nav a {
  display: block;
  padding: 0.4rem 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition);
}
.main-nav a:hover {
  color: var(--color-text);
  background: var(--color-surface-alt);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-nav {
  list-style: none;
  padding: 0.5rem 0 1rem;
  border-top: 1px solid var(--color-border);
}
.mobile-nav a {
  display: block;
  padding: 0.6rem 0;
  color: var(--color-text-muted);
  font-weight: 500;
  text-decoration: none;
}
.mobile-nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  padding: 4rem 0 3.5rem;
  background: linear-gradient(170deg, var(--color-accent-light) 0%, var(--color-bg) 60%);
  border-bottom: 1px solid var(--color-border-light);
}

.hero-content {
  max-width: 640px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-alt);
  border-color: var(--color-text-light);
  color: var(--color-text);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--color-surface-alt);
  color: var(--color-text);
}

/* Section styles */
.section-title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

/* Sizer Section */
.sizer-section {
  padding: 3.5rem 0;
}

.sizer-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

/* Inputs */
.sizer-inputs {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.preset-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-light);
}

.preset-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preset-btn {
  padding: 0.3rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-text);
  transition: all var(--transition);
}
.preset-btn:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.preset-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
}

.field-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

input[type="number"],
input[type="text"] {
  width: 100%;
  padding: 0.6rem 0.85rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(180, 94, 46, 0.15);
}

.field-group {
  border: none;
  margin: 0 0 1.25rem;
  padding: 0;
}
.field-group legend {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-bg);
}
.radio-label:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.radio-label:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.radio-label input {
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
}
.radio-text {
  display: flex;
  flex-direction: column;
}
.radio-text strong {
  font-size: 0.9rem;
}
.radio-text small {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.sizer-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border-light);
}

.save-status {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 500;
  min-height: 1.4em;
}
.save-status.success {
  color: var(--color-success);
}
.save-status.error {
  color: var(--color-error);
}

/* Results */
.sizer-results {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 80px;
}

.sizer-results h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.results-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-light);
}
.results-empty svg {
  margin: 0 auto 0.75rem;
  opacity: 0.4;
}
.results-empty p {
  font-size: 0.9rem;
}

.results-summary {
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

.results-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.result-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  gap: 1rem;
}

.result-card-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.result-card-info {
  flex: 1;
  min-width: 0;
}

.result-card-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}

.result-card-range {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.result-card-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.1rem;
}

.results-flags {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.flag {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}
.flag-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid rgba(184, 134, 11, 0.2);
}
.flag-info {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid rgba(58, 125, 68, 0.2);
}

/* Saved Profiles */
.saved-profiles {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.saved-profiles h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.profiles-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.profile-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.profile-chip:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}
.profile-chip .remove-profile {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-light);
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  margin-left: 0.25rem;
}
.profile-chip .remove-profile:hover {
  color: var(--color-error);
}

/* Guide Section */
.guide-section {
  padding: 3.5rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.guide-step {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.guide-step-num {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  margin-bottom: 0.75rem;
}

.guide-step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.guide-step p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.common-mistakes {
  background: var(--color-warning-light);
  border: 1px solid rgba(184, 134, 11, 0.2);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.common-mistakes h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-warning);
}

.common-mistakes ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.common-mistakes li {
  font-size: 0.9rem;
  color: var(--color-text);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
}
.common-mistakes li::before {
  content: "\26A0";
  position: absolute;
  left: 0;
  font-size: 0.75rem;
  top: 0.1rem;
}

/* Brands Section */
.brands-section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--color-border-light);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 640px;
}

.comparison-table th {
  background: var(--color-surface-alt);
  padding: 0.7rem 0.85rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.comparison-table td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
  vertical-align: top;
}

.comparison-table tbody tr:hover {
  background: var(--color-primary-light);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.table-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* FAQ Section */
.faq-section {
  padding: 3.5rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 720px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.faq-item summary {
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background var(--transition);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-text-light);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item[open] summary::after {
  content: "\2212";
}
.faq-item summary:hover {
  background: var(--color-surface-alt);
}

.faq-item p {
  padding: 0 1.1rem 0.85rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: 2.5rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.footer-brand p {
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  font-weight: 500;
}
.footer-links a:hover {
  color: #fff;
}

.footer-meta {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
}
.footer-meta p + p {
  margin-top: 0.25rem;
}

/* Responsive */
@media (max-width: 900px) {
  .sizer-layout {
    grid-template-columns: 1fr;
  }
  .sizer-results {
    position: static;
  }
}

@media (max-width: 700px) {
  .main-nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    padding: 2.5rem 0 2rem;
  }
  .sizer-section,
  .guide-section,
  .brands-section,
  .faq-section {
    padding: 2.5rem 0;
  }
  .sizer-inputs,
  .sizer-results {
    padding: 1.25rem;
  }
  .preset-bar {
    gap: 0.35rem;
  }
  .sizer-actions {
    flex-direction: column;
  }
  .sizer-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
  }
  .hero h1 {
    font-size: 1.5rem;
  }
  .hero-sub {
    font-size: 0.95rem;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
}

/* Print */
@media print {
  .site-header,
  .site-footer,
  .hero,
  .preset-bar,
  .sizer-actions,
  .saved-profiles,
  .nav-toggle {
    display: none !important;
  }
  .sizer-layout {
    display: block;
  }
  .sizer-results {
    position: static;
    border: none;
    box-shadow: none;
    padding: 0;
  }
  .result-card {
    break-inside: avoid;
  }
  body {
    color: #000;
    background: #fff;
  }
}



/* 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;
}