/* PawPrint Years – Dog Age Milestone Calendar Styles */
:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-surface-alt: #f5f0ea;
  --color-primary: #6b4226;
  --color-primary-light: #8b5e3c;
  --color-primary-dark: #4a2e1a;
  --color-accent: #d4832a;
  --color-accent-light: #f0c08a;
  --color-text: #2c2420;
  --color-text-secondary: #6b5e56;
  --color-text-muted: #9a8e86;
  --color-border: #e0d6cc;
  --color-success: #4a8c5c;
  --color-success-bg: #edf5f0;
  --color-info-bg: #f0f4fa;
  --color-info-border: #b8cce0;
  --color-focus: #4a7cc5;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.35rem;
  --font-size-xl: 1.75rem;
  --font-size-2xl: 2.25rem;
  --transition: 0.2s ease;
  --container-max: 960px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

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

.skip-link {
  position: absolute; top: -100%; left: 1rem; z-index: 100;
  background: var(--color-primary); color: #fff; padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm); font-size: var(--font-size-sm);
}
.skip-link:focus { top: 0; }
.sr-only { position: absolute; width: 1px; height: 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);
  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: 0.5rem; font-weight: 700; font-size: var(--font-size-md); color: var(--color-primary); }
.logo:hover, .logo:focus-visible { text-decoration: none; color: var(--color-primary-dark); }
.logo-icon { color: var(--color-accent); flex-shrink: 0; }

.nav-menu { display: flex; align-items: center; gap: 1.25rem; list-style: none; }
.nav-link { font-size: var(--font-size-sm); font-weight: 500; color: var(--color-text-secondary); padding: 0.35rem 0; border-bottom: 2px solid transparent; transition: var(--transition); }
.nav-link:hover, .nav-link:focus-visible { color: var(--color-primary); border-bottom-color: var(--color-accent); text-decoration: none; }

.nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 0.25rem; }
.nav-toggle-bar { width: 22px; height: 2px; background: var(--color-text); border-radius: 1px; transition: var(--transition); }

/* Hero */
.hero-section { padding: 3rem 0 2.5rem; background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-bg) 100%); }
.hero-grid { display: grid; grid-template-columns: 1fr 380px; gap: 2.5rem; align-items: start; }
.hero-eyebrow { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-accent); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.hero-title { font-size: var(--font-size-2xl); line-height: 1.2; color: var(--color-primary-dark); margin-bottom: 0.75rem; }
.hero-sub { font-size: var(--font-size-md); color: var(--color-text-secondary); line-height: 1.55; }

/* Setup Card */
.setup-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
}
.setup-card-title { font-size: var(--font-size-md); margin-bottom: 1.25rem; color: var(--color-primary-dark); }
.form-row { margin-bottom: 1rem; }
.form-label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text-secondary); margin-bottom: 0.3rem; }
.form-input {
  width: 100%; padding: 0.6rem 0.75rem; font-size: var(--font-size-base);
  font-family: var(--font-sans); color: var(--color-text);
  background: var(--color-bg); border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm); transition: var(--transition);
}
.form-input:focus { outline: none; border-color: var(--color-focus); box-shadow: 0 0 0 3px rgba(74,124,197,0.15); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b5e56' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2rem; }
.form-textarea { resize: vertical; min-height: 60px; }
.form-hint { display: flex; align-items: center; gap: 0.4rem; font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: 0.75rem; }
.hint-icon { flex-shrink: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  font-family: var(--font-sans); font-size: var(--font-size-sm); font-weight: 600;
  padding: 0.6rem 1.25rem; border-radius: var(--radius-sm); border: 1.5px solid transparent;
  cursor: pointer; transition: var(--transition); line-height: 1.3;
}
.btn:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-outline { background: var(--color-surface); color: var(--color-primary); border-color: var(--color-border); }
.btn-outline:hover { background: var(--color-surface-alt); border-color: var(--color-primary-light); }
.btn-ghost { background: transparent; color: var(--color-text-muted); border-color: transparent; }
.btn-ghost:hover { color: var(--color-text); background: var(--color-surface-alt); }
.btn-sm { padding: 0.4rem 0.75rem; font-size: var(--font-size-xs); }
.btn-full { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

/* Ad wrapper */
.ad-wrapper { max-width: var(--container-max); margin: 0 auto; padding: 0.5rem 1.25rem; }

/* Timeline Section */
.timeline-section { padding: 2.5rem 0 3rem; }
.section-title { font-size: var(--font-size-xl); color: var(--color-primary-dark); margin-bottom: 1.5rem; }
.timeline-header { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.25rem; }
.timeline-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.timeline-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.age-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1rem 1.25rem; text-align: center;
}
.age-label { display: block; font-size: var(--font-size-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.25rem; }
.age-value { display: block; font-size: var(--font-size-lg); font-weight: 700; color: var(--color-primary-dark); }

.timeline-filters { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.filter-btn {
  font-family: var(--font-sans); font-size: var(--font-size-sm); font-weight: 500;
  padding: 0.4rem 1rem; border-radius: 999px; border: 1.5px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text-secondary); cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--color-primary-light); color: var(--color-primary); }
.filter-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* Timeline Container */
.timeline-container { position: relative; }

/* Empty State */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--color-text-muted); }
.empty-icon { margin-bottom: 1rem; color: var(--color-border); }
.empty-title { font-size: var(--font-size-md); color: var(--color-text-secondary); margin-bottom: 0.5rem; }
.empty-text { max-width: 400px; margin: 0 auto; font-size: var(--font-size-sm); }

/* Timeline Stage Group */
.stage-group { margin-bottom: 2rem; }
.stage-group-header {
  display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem;
  padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-border);
}
.stage-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.stage-dot.socialization { background: #7b61ff; }
.stage-dot.diet { background: #d4832a; }
.stage-dot.health { background: #4a8c5c; }
.stage-dot.behavior { background: #4a7cc5; }
.stage-group-title { font-size: var(--font-size-md); font-weight: 700; color: var(--color-primary-dark); }

/* Milestone Card */
.milestone-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.25rem; margin-bottom: 0.75rem;
  cursor: pointer; transition: var(--transition);
  position: relative;
}
.milestone-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }
.milestone-card.completed { opacity: 0.7; }
.milestone-card.completed .milestone-title { text-decoration: line-through; color: var(--color-text-muted); }
.milestone-card.past { border-left: 4px solid var(--color-success); }
.milestone-card.upcoming { border-left: 4px solid var(--color-accent); }
.milestone-card.future { border-left: 4px solid var(--color-border); }

.milestone-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; }
.milestone-title { font-size: var(--font-size-base); font-weight: 600; color: var(--color-text); margin-bottom: 0.25rem; }
.milestone-age { font-size: var(--font-size-sm); color: var(--color-text-muted); white-space: nowrap; }
.milestone-desc { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-bottom: 0.5rem; }
.milestone-vet { font-size: var(--font-size-xs); color: var(--color-text-muted); background: var(--color-info-bg); border: 1px solid var(--color-info-border); border-radius: var(--radius-sm); padding: 0.4rem 0.6rem; }
.milestone-note-preview { font-size: var(--font-size-xs); color: var(--color-primary-light); font-style: italic; margin-top: 0.5rem; }
.milestone-check { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--color-border); flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.milestone-card.completed .milestone-check { background: var(--color-success); border-color: var(--color-success); }
.milestone-card.completed .milestone-check::after { content: ''; width: 6px; height: 10px; border-right: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(45deg) translate(-1px, -1px); }

/* Info Section */
.info-section { background: var(--color-surface); padding: 3rem 0; border-top: 1px solid var(--color-border); }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-bottom: 2.5rem; }
.info-card { background: var(--color-bg); border-radius: var(--radius-md); padding: 1.5rem; }
.info-icon { color: var(--color-accent); margin-bottom: 0.75rem; }
.info-card h3 { font-size: var(--font-size-base); color: var(--color-primary-dark); margin-bottom: 0.5rem; }
.info-card p { font-size: var(--font-size-sm); color: var(--color-text-secondary); line-height: 1.55; }

.scenario-block { background: var(--color-surface-alt); border-radius: var(--radius-md); padding: 1.5rem; margin-bottom: 2rem; border-left: 4px solid var(--color-accent); }
.scenario-block h3 { font-size: var(--font-size-base); color: var(--color-primary-dark); margin-bottom: 0.75rem; }
.scenario-block p { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-bottom: 0.75rem; line-height: 1.55; }
.scenario-block p:last-child { margin-bottom: 0; }

.common-mistakes { margin-bottom: 2rem; }
.common-mistakes h3 { font-size: var(--font-size-md); color: var(--color-primary-dark); margin-bottom: 1rem; }
.mistakes-list { list-style: none; }
.mistakes-list li { font-size: var(--font-size-sm); color: var(--color-text-secondary); padding: 0.6rem 0; border-bottom: 1px solid var(--color-border); line-height: 1.55; }
.mistakes-list li:last-child { border-bottom: none; }

.assumptions-block { background: var(--color-info-bg); border: 1px solid var(--color-info-border); border-radius: var(--radius-md); padding: 1.5rem; }
.assumptions-block h3 { font-size: var(--font-size-base); color: var(--color-primary-dark); margin-bottom: 0.5rem; }
.assumptions-block p { font-size: var(--font-size-sm); color: var(--color-text-secondary); line-height: 1.55; }
.last-updated { font-size: var(--font-size-xs); color: var(--color-text-muted); margin-top: 0.75rem; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 1rem;
}
.modal-overlay[hidden] { display: none; }
.modal {
  background: var(--color-surface); border-radius: var(--radius-lg);
  padding: 2rem; max-width: 520px; width: 100%; max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow-lg); position: relative;
}
.modal-close {
  position: absolute; top: 0.75rem; right: 1rem; background: none; border: none;
  font-size: 1.5rem; color: var(--color-text-muted); cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--color-text); }
.modal-title { font-size: var(--font-size-md); color: var(--color-primary-dark); margin-bottom: 0.25rem; padding-right: 1.5rem; }
.modal-age { font-size: var(--font-size-sm); color: var(--color-text-muted); margin-bottom: 1rem; }
.modal-body p { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-bottom: 0.75rem; line-height: 1.55; }
.modal-vet-topic { font-size: var(--font-size-sm); background: var(--color-info-bg); border: 1px solid var(--color-info-border); border-radius: var(--radius-sm); padding: 0.6rem 0.75rem; margin-bottom: 1rem; }
.modal-vet-topic strong { color: var(--color-primary-dark); }
.modal-note-section { margin-bottom: 1rem; }
.modal-actions { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; font-size: var(--font-size-sm); color: var(--color-text-secondary); cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--color-primary); }

/* Footer */
.site-footer { margin-top: auto; background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 2rem 0; }
.footer-inner { display: flex; flex-direction: column; gap: 1rem; }
.footer-logo { font-weight: 700; font-size: var(--font-size-md); color: var(--color-primary); }
.footer-tagline { font-size: var(--font-size-sm); color: var(--color-text-muted); }
.footer-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer-nav a { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.footer-nav a:hover { color: var(--color-primary); }
.footer-copy { font-size: var(--font-size-xs); color: var(--color-text-muted); }

/* Responsive */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-title { font-size: var(--font-size-xl); }
  .timeline-summary { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .timeline-header { flex-direction: column; }
  .nav-toggle { display: flex; }
  .nav-menu { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--color-surface); border-bottom: 1px solid var(--color-border); flex-direction: column; padding: 1rem 1.25rem; gap: 0; }
  .nav-menu.open { display: flex; }
  .nav-menu li { border-bottom: 1px solid var(--color-border); }
  .nav-menu li:last-child { border-bottom: none; }
  .nav-link { display: block; padding: 0.75rem 0; border-bottom: none; }
  .nav-link:hover { border-bottom-color: transparent; }
}

@media print {
  .site-header, .site-footer, .timeline-actions, .timeline-filters, .hero-section, .info-section, .ad-wrapper, .nav-toggle { display: none !important; }
  .timeline-section { padding: 0; }
  .milestone-card { break-inside: avoid; border-left-width: 3px; }
  body { background: #fff; color: #000; }
}



/* 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;
}