/* MuzzleMatch: Dog Muzzle Fit and Measurement Guide */
:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-alt: #f1f5f9;
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #e0e7ff;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #cbd5e1;
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  --color-warning: #d97706;
  --color-warning-bg: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1120px;
  --transition: .2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  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, a:focus-visible { text-decoration: underline; color: var(--color-primary-dark); }

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

.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }

.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; }

.skip-link { position: absolute; top: -100%; left: 1rem; background: var(--color-primary); color: #fff; padding: .5rem 1rem; border-radius: var(--radius-sm); z-index: 100; transition: top var(--transition); }
.skip-link:focus { top: 1rem; }

/* Header */
.site-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { display: flex; align-items: center; gap: .5rem; font-weight: 700; font-size: 1.2rem; color: var(--color-text); }
.logo:hover, .logo:focus-visible { text-decoration: none; color: var(--color-primary); }
.logo-icon { color: var(--color-primary); }

.nav-toggle { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle-bar { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; }
.nav-list { list-style: none; display: flex; gap: 1.5rem; }
.nav-list a { color: var(--color-text-secondary); font-weight: 500; font-size: .95rem; }
.nav-list a:hover, .nav-list a:focus-visible { color: var(--color-primary); text-decoration: none; }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-list { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--color-surface); flex-direction: column; padding: 1rem 1.25rem; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); }
  .nav-list.open { display: flex; }
}
@media (min-width: 769px) {
  .nav-toggle { display: none; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .65rem 1.25rem; border-radius: var(--radius-sm); font-weight: 600; font-size: .95rem; cursor: pointer; border: 2px solid transparent; transition: all var(--transition); font-family: var(--font); }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-ghost:hover, .btn-ghost:focus-visible { background: var(--color-primary-light); text-decoration: none; }
.btn-sm { padding: .4rem .85rem; font-size: .85rem; }
.btn-danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger); }
.btn-danger:hover { background: var(--color-danger); color: #fff; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 100%); padding: 3.5rem 0 3rem; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }
.hero-copy h1 { font-size: 2.2rem; line-height: 1.2; margin-bottom: .75rem; }
.hero-sub { font-size: 1.1rem; color: var(--color-text-secondary); margin-bottom: 1.5rem; }
.hero-copy .btn { margin-right: .75rem; margin-bottom: .5rem; }
.hero-visual { display: flex; justify-content: center; }

@media (max-width: 768px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { order: -1; }
  .hero-copy h1 { font-size: 1.75rem; }
}

/* Panel section */
.panel-section { padding: 3rem 0; }
.panel-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; }

@media (max-width: 900px) {
  .panel-grid { grid-template-columns: 1fr; }
}

.measurement-form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); }
.measurement-form h2 { font-size: 1.4rem; margin-bottom: .25rem; }
.panel-intro { color: var(--color-text-secondary); margin-bottom: 1.5rem; font-size: .95rem; }

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
.hint { font-weight: 400; color: var(--color-text-secondary); font-size: .85rem; }
.form-group input, .form-group select { width: 100%; padding: .6rem .75rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 1rem; font-family: var(--font); background: var(--color-bg); color: var(--color-text); transition: border-color var(--transition); }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.field-hint { font-size: .8rem; color: var(--color-text-secondary); margin-top: .25rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-actions { display: flex; gap: .75rem; margin-top: .5rem; }

/* Results */
.results { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.results h3 { font-size: 1.1rem; margin-bottom: .75rem; }
.result-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-bottom: 1rem; }
.result-card { background: var(--color-surface-alt); border-radius: var(--radius-sm); padding: .75rem; text-align: center; }
.result-label { display: block; font-size: .75rem; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .25rem; }
.result-value { display: block; font-weight: 700; font-size: 1.1rem; color: var(--color-primary); }

@media (max-width: 600px) {
  .result-cards { grid-template-columns: 1fr; }
}

.fit-notes { background: var(--color-primary-light); border-radius: var(--radius-sm); padding: 1rem; margin-bottom: 1rem; font-size: .9rem; }
.fit-notes p + p { margin-top: .5rem; }
.result-actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* Saved dogs */
.saved-dogs { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-border); }
.saved-dogs h3 { font-size: 1rem; margin-bottom: .5rem; }
.saved-dogs ul { list-style: none; }
.saved-dogs li { display: flex; justify-content: space-between; align-items: center; padding: .5rem 0; border-bottom: 1px solid var(--color-border); font-size: .9rem; }
.saved-dogs li:last-child { border-bottom: none; }
.saved-dogs .load-btn { background: none; border: none; color: var(--color-primary); cursor: pointer; font-size: .85rem; font-weight: 600; padding: .25rem .5rem; }
.saved-dogs .load-btn:hover { text-decoration: underline; }

/* Reference panel */
.reference-panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.reference-panel h2 { font-size: 1.2rem; margin-bottom: 1rem; }
.ref-block { margin-bottom: 1.5rem; }
.ref-block:last-child { margin-bottom: 0; }
.ref-block h3 { font-size: 1rem; margin-bottom: .5rem; color: var(--color-primary); }
.ref-block ol, .ref-block ul { padding-left: 1.25rem; font-size: .9rem; color: var(--color-text-secondary); }
.ref-block li { margin-bottom: .35rem; }
.checklist li { list-style: none; position: relative; padding-left: 1.25rem; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--color-success); font-weight: 700; }

/* Info sections */
.info-section { padding: 3rem 0; }
.info-section.alt { background: var(--color-surface); }
.info-section h2 { font-size: 1.5rem; margin-bottom: .5rem; }
.section-intro { color: var(--color-text-secondary); margin-bottom: 1.5rem; max-width: 640px; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.info-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.info-card h3 { font-size: 1rem; margin-bottom: .5rem; }
.info-card p { font-size: .9rem; color: var(--color-text-secondary); }

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

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.step-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.25rem; text-align: center; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; background: var(--color-primary); color: #fff; border-radius: 50%; font-weight: 700; font-size: .9rem; margin-bottom: .75rem; }
.step-card h3 { font-size: 1rem; margin-bottom: .4rem; }
.step-card p { font-size: .85rem; color: var(--color-text-secondary); }

@media (max-width: 768px) {
  .steps-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* Print card */
.print-card-preview { margin-top: 1.5rem; }
.print-card-inner { background: var(--color-surface); border: 2px dashed var(--color-border); border-radius: var(--radius); padding: 1.5rem; max-width: 480px; }
.print-card-inner h3 { font-size: 1.1rem; margin-bottom: .75rem; text-align: center; }
.print-card-inner dl { display: grid; grid-template-columns: auto 1fr; gap: .4rem 1rem; font-size: .9rem; }
.print-card-inner dt { font-weight: 600; }
.print-card-inner dd { color: var(--color-text-secondary); }
.print-card-note { margin-top: 1rem; font-size: .8rem; color: var(--color-text-secondary); text-align: center; font-style: italic; }

@media print {
  body * { visibility: hidden; }
  #print-card-preview, #print-card-preview * { visibility: visible; }
  #print-card-preview { position: absolute; top: 0; left: 0; width: 100%; }
  .print-card-inner { border: 2px solid #000; }
}

/* Footer */
.site-footer { margin-top: auto; background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 2rem 0; }
.footer-inner { text-align: center; font-size: .85rem; color: var(--color-text-secondary); }
.footer-inner p { margin-bottom: .4rem; }
.footer-nav { display: flex; justify-content: center; gap: 1rem; margin-top: .75rem; }
.footer-nav a { color: var(--color-text-secondary); }
.footer-nav a:hover { color: var(--color-primary); }

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

/* Utility */
[hidden] { display: none !important; }



/* 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;
}