/* Seasonal Car Prep Timeline — styles.css */
:root {
  --color-bg: #f5f3ef;
  --color-surface: #ffffff;
  --color-surface-alt: #faf8f4;
  --color-text: #1e2430;
  --color-text-secondary: #5a6270;
  --color-text-muted: #8a919c;
  --color-primary: #0d6e6e;
  --color-primary-dark: #095454;
  --color-primary-light: #e0f2f1;
  --color-accent: #d4820a;
  --color-accent-light: #fff3d6;
  --color-border: #d5d2cc;
  --color-border-light: #eae7e1;
  --color-success: #2e7d32;
  --color-success-light: #e8f5e9;
  --color-winter: #4a90d9;
  --color-spring: #5cb85c;
  --color-summer: #e07b39;
  --color-fall: #c47f2e;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --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);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  --max-width: 1200px;
  --header-height: 60px;
}

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

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

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 { text-decoration: underline; color: var(--color-primary-dark); }

.skip-link {
  position: absolute; top: -100%; left: 16px; z-index: 100;
  background: var(--color-primary); color: #fff;
  padding: 8px 16px; border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: 8px; }

.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-height);
}
.logo {
  display: flex; align-items: center; gap: 8px;
  color: var(--color-primary); font-weight: 700; font-size: 1.1rem;
}
.logo:hover, .logo:focus-visible { text-decoration: none; color: var(--color-primary-dark); }
.logo-icon { flex-shrink: 0; }
.site-nav ul { display: flex; list-style: none; gap: 24px; }
.site-nav a {
  color: var(--color-text-secondary); font-weight: 500; font-size: 0.95rem;
  padding: 4px 0; border-bottom: 2px solid transparent;
}
.site-nav a:hover, .site-nav a:focus-visible {
  color: var(--color-primary); border-bottom-color: var(--color-primary); text-decoration: none;
}

/* Intro */
.intro { padding: 40px 0 24px; text-align: center; max-width: 680px; margin: 0 auto; }
.intro h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; line-height: 1.2; color: var(--color-text); }
.subtitle { font-size: 1.1rem; color: var(--color-text-secondary); margin-top: 12px; }

/* App Layout */
.app-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  margin-bottom: 48px;
  align-items: start;
}

/* Profile Panel */
.profile-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: calc(var(--header-height) + 16px);
  max-height: calc(100vh - var(--header-height) - 32px);
  overflow-y: auto;
}
.profile-panel h2 { font-size: 1.15rem; margin-bottom: 16px; color: var(--color-text); }
.field { margin-bottom: 14px; }
.field label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--color-text-secondary); margin-bottom: 4px;
}
.field input, .field select {
  width: 100%; padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem; font-family: var(--font-sans);
  background: var(--color-surface-alt); color: var(--color-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13,110,110,0.15);
}
.hint { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 2px; display: block; }
.presets { margin: 16px 0; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.presets-label { font-size: 0.8rem; color: var(--color-text-muted); font-weight: 600; }
.preset-btn {
  font-size: 0.78rem; padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 20px; background: var(--color-surface-alt);
  color: var(--color-text-secondary); cursor: pointer;
  font-family: var(--font-sans); transition: all 0.15s;
}
.preset-btn:hover, .preset-btn:focus-visible {
  background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary-dark);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 600; font-family: var(--font-sans);
  cursor: pointer; border: 2px solid transparent;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--color-primary); color: #fff; width: 100%; justify-content: center;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-primary-dark); text-decoration: none;
}
.btn-outline {
  background: var(--color-surface); color: var(--color-text-secondary);
  border-color: var(--color-border);
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary-dark);
}

.save-status { margin-top: 10px; font-size: 0.82rem; color: var(--color-success); min-height: 1.2em; }

/* Timeline Area */
.timeline-area { min-width: 0; }
.timeline-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 16px;
}
.timeline-header h2 { font-size: 1.3rem; }
.timeline-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.vehicle-summary {
  background: var(--color-primary-light);
  border: 1px solid rgba(13,110,110,0.2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--color-primary-dark);
}
.vehicle-summary strong { color: var(--color-primary-dark); }

/* Seasons Grid */
.seasons-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }

.season-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}
.season-card:hover { box-shadow: var(--shadow-md); }
.season-card[data-season="winter"] { border-top: 4px solid var(--color-winter); }
.season-card[data-season="spring"] { border-top: 4px solid var(--color-spring); }
.season-card[data-season="summer"] { border-top: 4px solid var(--color-summer); }
.season-card[data-season="fall"] { border-top: 4px solid var(--color-fall); }

.season-header {
  padding: 16px 18px 12px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; user-select: none;
}
.season-header h3 {
  font-size: 1.05rem; display: flex; align-items: center; gap: 8px;
}
.season-icon { font-size: 1.3rem; }
.season-count {
  font-size: 0.78rem; background: var(--color-surface-alt);
  padding: 2px 8px; border-radius: 20px; color: var(--color-text-muted);
}
.season-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--color-text-muted); padding: 4px;
  transition: transform 0.2s;
}
.season-toggle[aria-expanded="true"] { transform: rotate(180deg); }
.season-toggle svg { display: block; }

.season-body { padding: 0 18px 18px; }
.season-body[hidden] { display: none; }

.task-list { list-style: none; }
.task-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--color-border-light);
}
.task-item:last-child { border-bottom: none; }
.task-item input[type="checkbox"] {
  width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px;
  accent-color: var(--color-primary); cursor: pointer;
}
.task-item label {
  font-size: 0.88rem; line-height: 1.4; cursor: pointer;
  color: var(--color-text); flex: 1;
}
.task-item label .task-detail {
  display: block; font-size: 0.78rem; color: var(--color-text-muted); margin-top: 2px;
}
.task-item.checked label { text-decoration: line-through; color: var(--color-text-muted); }

/* Progress Bar */
.progress-bar {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.progress-header {
  display: flex; justify-content: space-between;
  font-size: 0.88rem; font-weight: 600; margin-bottom: 8px;
}
.progress-track {
  height: 10px; background: var(--color-border-light);
  border-radius: 5px; overflow: hidden;
}
.progress-fill {
  height: 100%; background: var(--color-primary);
  border-radius: 5px; transition: width 0.3s ease;
  width: 0%;
}

/* Content Area */
.content-area { margin-bottom: 48px; }
.content-area h2 {
  font-size: 1.5rem; margin-bottom: 24px;
  text-align: center;
}
.content-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
}
.content-card h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--color-primary-dark); }
.content-card p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.65; }

/* FAQ */
.faq-area { margin-bottom: 48px; }
.faq-area h2 { font-size: 1.5rem; margin-bottom: 20px; text-align: center; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border-light); }
.faq-toggle {
  width: 100%; text-align: left; background: none; border: none;
  padding: 14px 0; font-size: 0.95rem; font-weight: 600;
  color: var(--color-text); cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-sans);
}
.faq-toggle::after {
  content: '+'; font-size: 1.2rem; color: var(--color-primary);
  flex-shrink: 0; margin-left: 12px;
}
.faq-toggle[aria-expanded="true"]::after { content: '−'; }
.faq-item dd { padding: 0 0 14px; font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }
.faq-item dd[hidden] { display: none; }

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  padding: 24px 0;
}
.footer-inner { text-align: center; }
.footer-brand { font-weight: 700; color: var(--color-text); font-size: 0.95rem; }
.footer-note { font-size: 0.82rem; color: var(--color-text-muted); margin: 4px 0 8px; }
.footer-links { display: flex; justify-content: center; gap: 16px; margin-bottom: 8px; }
.footer-links a { font-size: 0.82rem; color: var(--color-text-secondary); }
.footer-updated { font-size: 0.78rem; color: var(--color-text-muted); }

/* Print */
@media print {
  .site-header, .site-footer, .profile-panel, .timeline-actions,
  .progress-bar, .content-area, .faq-area, .intro,
  .save-status, .presets { display: none !important; }
  body { background: #fff; color: #000; }
  .app-layout { display: block; }
  .timeline-header { display: block; }
  .timeline-header h2 { font-size: 1.4rem; margin-bottom: 8px; }
  .vehicle-summary { border: 1px solid #ccc; background: #f9f9f9; margin-bottom: 16px; }
  .seasons-grid { display: block; }
  .season-card { break-inside: avoid; margin-bottom: 16px; border: 1px solid #ccc; }
  .season-body { display: block !important; }
  .task-item label { font-size: 0.85rem; }
  .task-item input[type="checkbox"] { display: none; }
  .task-item.checked label { text-decoration: line-through; }
}

/* Responsive */
@media (max-width: 900px) {
  .app-layout { grid-template-columns: 1fr; }
  .profile-panel { position: static; max-height: none; }
  .seasons-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .container { padding: 0 14px; }
  .intro { padding: 28px 0 16px; }
  .intro h1 { font-size: 1.5rem; }
  .subtitle { font-size: 0.95rem; }
  .timeline-header { flex-direction: column; align-items: flex-start; }
  .content-grid { grid-template-columns: 1fr; }
  .site-nav ul { gap: 14px; }
  .site-nav a { font-size: 0.85rem; }
}



/* 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;
}