/* Window Screen Repair Sizer — Styles */
:root {
  --color-primary: #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-primary-light: #52b788;
  --color-primary-bg: #f0f7f4;
  --color-accent: #d4a373;
  --color-accent-dark: #b08968;
  --color-text: #212529;
  --color-text-secondary: #495057;
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --color-border-light: #e9ecef;
  --color-surface: #ffffff;
  --color-surface-alt: #f8f9fa;
  --color-error: #dc3545;
  --color-success: #2d6a4f;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --max-width: 1120px;
  --transition: 0.2s ease;
}

*, *::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-surface);
  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, a:focus-visible {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* 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: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
}
.logo:hover, .logo:focus-visible {
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--color-primary);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.main-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Hero */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary-bg) 0%, #e8f5e9 100%);
  padding: 3rem 0 2.5rem;
  text-align: center;
}

.hero-section h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.2;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Calculator Section */
.calculator-section {
  padding: 2.5rem 0;
}

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

@media (max-width: 860px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

.calc-form-panel,
.calc-results-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.calc-form-panel h2,
.calc-results-panel h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.form-hint {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

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

.preset-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preset-btn {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.preset-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.preset-btn[aria-pressed="true"] {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* Form Inputs */
.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (max-width: 520px) {
  .input-row {
    grid-template-columns: 1fr;
  }
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.input-group input,
.input-group select {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.625rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  appearance: none;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

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

.input-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: white;
  cursor: pointer;
  transition: all var(--transition);
  width: 100%;
  margin-top: 0.5rem;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.btn-secondary:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Results */
.results-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-muted);
}

.results-empty svg {
  margin: 0 auto 1rem;
  opacity: 0.5;
}

.result-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.result-card h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.result-main {
  background: var(--color-primary-bg);
  border-color: var(--color-primary-light);
}

.result-main h3 {
  color: var(--color-primary-dark);
}

.result-dimensions {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.result-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1;
}

.result-x {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-text-muted);
}

.result-unit {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-left: 0.25rem;
}

.result-note {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.result-big {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.result-small {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.125rem;
}

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

.shopping-list li {
  padding: 0.375rem 0;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

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

.shopping-list li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.copy-confirm {
  font-size: 0.8125rem;
  color: var(--color-success);
  font-weight: 600;
  margin-top: 0.5rem;
  padding: 0.375rem 0.75rem;
  background: var(--color-primary-bg);
  border-radius: var(--radius);
  display: inline-block;
}

/* Guide Section */
.guide-section {
  padding: 2.5rem 0;
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border-light);
}

.guide-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

@media (max-width: 768px) {
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.guide-block h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

.steps-list {
  list-style: none;
  counter-reset: steps;
}

.steps-list li {
  counter-increment: steps;
  padding: 0.75rem 0 0.75rem 2.5rem;
  position: relative;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.9375rem;
}

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

.steps-list li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
}

.mistakes-list {
  list-style: none;
}

.mistakes-list li {
  padding: 0.75rem 0 0.75rem 1.75rem;
  position: relative;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.9375rem;
}

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

.mistakes-list li::before {
  content: "⚠";
  position: absolute;
  left: 0;
  top: 0.75rem;
  font-size: 0.875rem;
}

/* Reference Section */
.reference-section {
  padding: 2.5rem 0;
}

.reference-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 1.25rem;
}

.ref-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .ref-grid {
    grid-template-columns: 1fr;
  }
}

.ref-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.ref-card h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.ref-table th {
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 0.375rem 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.ref-table td {
  padding: 0.375rem 0.5rem;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}

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

.ref-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  font-style: italic;
}

/* FAQ Section */
.faq-section {
  padding: 2.5rem 0;
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border-light);
}

.faq-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 1.25rem;
}

.faq-list {
  max-width: 720px;
}

.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq-toggle {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
  padding: 1rem 2rem 1rem 0;
  position: relative;
  transition: color var(--transition);
}

.faq-toggle:hover {
  color: var(--color-primary);
}

.faq-toggle::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition);
}

.faq-toggle[aria-expanded="true"]::after {
  content: "−";
}

.faq-item dd {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding: 0 0 1rem;
  line-height: 1.7;
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 2rem 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-brand .logo-text {
  color: white;
  font-size: 1.125rem;
}

.footer-brand .logo-accent {
  color: var(--color-primary-light);
}

.footer-tagline {
  font-size: 0.8125rem;
  opacity: 0.7;
  margin-top: 0.25rem;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  gap: 1.25rem;
}

.footer-nav a {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
  font-weight: 500;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: white;
  text-decoration: underline;
}

.footer-meta {
  font-size: 0.75rem;
  opacity: 0.5;
  width: 100%;
  text-align: right;
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
  }
  .footer-meta {
    text-align: left;
  }
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .hero-section,
  .guide-section,
  .reference-section,
  .faq-section,
  .preset-bar,
  .result-actions,
  .btn-primary {
    display: none !important;
  }
  .calculator-section {
    padding: 0;
  }
  .calc-layout {
    display: block;
  }
  .calc-form-panel {
    display: none;
  }
  .calc-results-panel {
    border: none;
    box-shadow: none;
    padding: 0;
  }
  .result-card {
    break-inside: avoid;
  }
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}



/* 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;
}