/* InteriorShine Styles */
:root {
  --c-primary: #1a73e8;
  --c-primary-dark: #1557b0;
  --c-primary-light: #e8f0fe;
  --c-accent: #34a853;
  --c-warn: #f9ab00;
  --c-danger: #ea4335;
  --c-bg: #f8f9fc;
  --c-surface: #ffffff;
  --c-text: #1f2937;
  --c-text-muted: #6b7280;
  --c-border: #e5e7eb;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--c-text); background: var(--c-bg); line-height: 1.6; }

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

/* Header */
.site-header { background: var(--c-surface); border-bottom: 1px solid var(--c-border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--c-text); font-weight: 700; font-size: 1.1rem; }
.main-nav { display: flex; gap: 20px; }
.main-nav a { text-decoration: none; color: var(--c-text-muted); font-size: .9rem; font-weight: 500; transition: color .2s; }
.main-nav a:hover { color: var(--c-primary); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; padding: 4px; }

/* Hero */
.hero { background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%); color: #fff; padding: 60px 0 50px; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.hero-sub { font-size: 1.1rem; opacity: .9; max-width: 560px; margin: 0 auto 32px; }
.hero-stats { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat strong { font-size: 1.8rem; font-weight: 800; }
.stat span { font-size: .8rem; opacity: .8; text-transform: uppercase; letter-spacing: .5px; }

/* Planner */
.planner-section { padding: 48px 0; }
.planner-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }

.planner-inputs { background: var(--c-surface); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.planner-inputs h2 { font-size: 1.3rem; margin-bottom: 20px; }

.input-group { border: none; margin-bottom: 24px; }
.input-group legend { font-weight: 600; font-size: .95rem; margin-bottom: 10px; }

.radio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.mess-grid { grid-template-columns: repeat(2, 1fr); }
.radio-card { cursor: pointer; }
.radio-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.radio-label { display: flex; flex-direction: column; align-items: center; padding: 12px 8px; border: 2px solid var(--c-border); border-radius: var(--radius-sm); font-weight: 600; font-size: .9rem; text-align: center; transition: all .2s; }
.radio-dust { font-size: .75rem; font-weight: 400; color: var(--c-text-muted); margin-top: 2px; }
.radio-card input:checked + .radio-label { border-color: var(--c-primary); background: var(--c-primary-light); color: var(--c-primary-dark); }
.radio-card input:focus-visible + .radio-label { outline: 2px solid var(--c-primary); outline-offset: 2px; }

.preset-grid { display: flex; gap: 8px; }
.preset-btn { flex: 1; display: flex; flex-direction: column; align-items: center; padding: 10px; border: 2px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-surface); cursor: pointer; font-weight: 600; font-size: .85rem; transition: all .2s; }
.preset-btn.active { border-color: var(--c-primary); background: var(--c-primary-light); color: var(--c-primary-dark); }
.preset-time { font-size: .75rem; font-weight: 400; color: var(--c-text-muted); }

.checkbox-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.cb { display: flex; align-items: center; gap: 8px; font-size: .85rem; cursor: pointer; padding: 4px 0; }
.cb input { accent-color: var(--c-primary); width: 16px; height: 16px; flex-shrink: 0; }

.custom-supply { display: flex; gap: 8px; margin-top: 10px; }
.custom-supply input { flex: 1; padding: 8px 12px; border: 1px solid var(--c-border); border-radius: var(--radius-sm); font-size: .85rem; }
.custom-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.custom-tag { background: var(--c-primary-light); color: var(--c-primary-dark); padding: 3px 10px; border-radius: 20px; font-size: .8rem; display: flex; align-items: center; gap: 4px; }
.custom-tag button { background: none; border: none; cursor: pointer; color: var(--c-primary-dark); font-size: 1rem; line-height: 1; }

.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.btn-primary { background: var(--c-primary); color: #fff; border: none; padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600; font-size: .95rem; cursor: pointer; transition: background .2s; }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-secondary { background: var(--c-bg); color: var(--c-text); border: 1px solid var(--c-border); padding: 12px 20px; border-radius: var(--radius-sm); font-weight: 600; font-size: .9rem; cursor: pointer; transition: all .2s; }
.btn-secondary:hover { background: var(--c-border); }
.btn-ghost { background: none; color: var(--c-primary); border: 1px solid var(--c-primary); padding: 12px 20px; border-radius: var(--radius-sm); font-weight: 600; font-size: .9rem; cursor: pointer; transition: all .2s; }
.btn-ghost:hover { background: var(--c-primary-light); }
.btn-small { background: var(--c-primary); color: #fff; border: none; padding: 8px 14px; border-radius: var(--radius-sm); font-size: .85rem; cursor: pointer; }

.status-msg { font-size: .85rem; color: var(--c-text-muted); margin-top: 8px; min-height: 1.4em; }

/* Output panel */
.planner-output { background: var(--c-surface); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); position: sticky; top: 76px; max-height: calc(100vh - 92px); overflow-y: auto; }
.output-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.output-header h2 { font-size: 1.2rem; }
.output-actions { display: flex; gap: 8px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--c-text-muted); }
.empty-state svg { margin-bottom: 16px; }
.empty-state h3 { color: var(--c-text); margin-bottom: 8px; }

.sequence-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--c-border); }
.sequence-meta span { font-size: .85rem; color: var(--c-text-muted); background: var(--c-bg); padding: 4px 12px; border-radius: 20px; }
.sequence-meta strong { color: var(--c-text); }

.step-list { list-style: none; counter-reset: step; }
.step-list li { counter-increment: step; padding: 16px 0 16px 48px; border-bottom: 1px solid var(--c-border); position: relative; }
.step-list li:last-child { border-bottom: none; }
.step-list li::before {
  content: counter(step);
  position: absolute; left: 0; top: 16px;
  width: 30px; height: 30px;
  background: var(--c-primary); color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem;
}
.step-title { font-weight: 600; margin-bottom: 4px; }
.step-detail { font-size: .85rem; color: var(--c-text-muted); }
.step-time { font-size: .8rem; color: var(--c-accent); font-weight: 600; margin-top: 4px; }
.step-supplies { font-size: .8rem; color: var(--c-text-muted); margin-top: 4px; }
.step-tip { font-size: .8rem; background: #fff8e1; padding: 6px 10px; border-radius: 6px; margin-top: 6px; display: inline-block; }

/* Examples */
.examples-section { background: var(--c-surface); padding: 56px 0; }
.examples-section h2, .mistakes-section h2, .checklist-section h2, .faq-section h2 { font-size: 1.5rem; margin-bottom: 12px; text-align: center; }
.section-intro { text-align: center; color: var(--c-text-muted); max-width: 560px; margin: 0 auto 32px; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scenario-card { background: var(--c-bg); border-radius: var(--radius); padding: 24px; cursor: pointer; transition: box-shadow .2s, transform .2s; border: 2px solid transparent; }
.scenario-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: var(--c-primary); }
.scenario-icon { font-size: 2rem; margin-bottom: 12px; }
.scenario-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.scenario-card p { font-size: .85rem; color: var(--c-text-muted); margin-bottom: 12px; }
.scenario-tag { font-size: .75rem; font-weight: 600; background: var(--c-primary-light); color: var(--c-primary-dark); padding: 3px 10px; border-radius: 20px; }

/* Mistakes */
.mistakes-section { padding: 56px 0; }
.mistake-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mistake-card { background: var(--c-surface); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border-left: 4px solid var(--c-warn); }
.mistake-card h3 { font-size: .95rem; margin-bottom: 8px; }
.mistake-card p { font-size: .85rem; color: var(--c-text-muted); }

/* Checklist */
.checklist-section { background: var(--c-surface); padding: 56px 0; }
.photo-checklist { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-top: 24px; }
.photo-item { background: var(--c-bg); border-radius: var(--radius-sm); padding: 16px; text-align: center; font-size: .85rem; }
.photo-item .zone-name { font-weight: 600; display: block; margin-bottom: 6px; }
.photo-item .photo-hint { color: var(--c-text-muted); font-size: .75rem; }

/* FAQ */
.faq-section { padding: 56px 0; }
details { background: var(--c-surface); border-radius: var(--radius-sm); margin-bottom: 10px; box-shadow: var(--shadow); overflow: hidden; }
summary { padding: 16px 20px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; font-size: 1.3rem; color: var(--c-primary); transition: transform .2s; }
details[open] summary::after { content: '−'; }
details p { padding: 0 20px 16px; font-size: .9rem; color: var(--c-text-muted); }

/* Affiliate */
.affiliate-section { padding: 48px 0; }
.affiliate-card { background: linear-gradient(135deg, #e8f0fe, #fff); border-radius: var(--radius); padding: 32px; text-align: center; border: 2px solid var(--c-primary-light); }
.affiliate-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.affiliate-card p { color: var(--c-text-muted); margin-bottom: 20px; max-width: 480px; margin-left: auto; margin-right: auto; }
.affiliate-note { font-size: .75rem; color: var(--c-text-muted); margin-top: 12px; }

/* Footer */
.site-footer { background: var(--c-surface); border-top: 1px solid var(--c-border); padding: 32px 0; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; font-size: .85rem; }
.footer-brand { display: flex; flex-direction: column; gap: 2px; }
.footer-brand span { color: var(--c-text-muted); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { color: var(--c-text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--c-primary); }
.footer-note { color: var(--c-text-muted); width: 100%; text-align: center; }
.footer-note a { color: var(--c-primary); text-decoration: none; }

/* Responsive */
@media (max-width: 900px) {
  .planner-grid { grid-template-columns: 1fr; }
  .planner-output { position: static; max-height: none; }
  .radio-grid { grid-template-columns: repeat(2, 1fr); }
  .scenario-grid { grid-template-columns: 1fr; }
  .mistake-grid { grid-template-columns: 1fr; }
  .preset-grid { flex-direction: column; }
}
@media (max-width: 600px) {
  .main-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--c-surface); flex-direction: column; padding: 12px 20px; border-bottom: 1px solid var(--c-border); }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .checkbox-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .form-actions { flex-direction: column; }
  .output-header { flex-direction: column; align-items: flex-start; }
}

/* Print */
@media print {
  .site-header, .site-footer, .planner-inputs, .output-actions, .affiliate-section, .faq-section, .examples-section, .mistakes-section { display: none; }
  .planner-output { box-shadow: none; position: static; }
  body { background: #fff; }
}

/* Focus visible */
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }

/* Muted text */
.muted { color: var(--c-text-muted); text-align: center; padding: 20px; }

/* Ad slot placeholder */
.ad-slot { background: var(--c-bg); border: 1px dashed var(--c-border); border-radius: var(--radius-sm); padding: 16px; text-align: center; color: var(--c-text-muted); font-size: .8rem; margin: 24px 0; }


/* 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;
}