/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #DBEAFE;
  --color-secondary: #059669;
  --color-secondary-light: #D1FAE5;
  --color-accent: #DC2626;
  --color-accent-light: #FEE2E2;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-text-lighter: #94A3B8;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.6;
  background: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.25rem;
}

.main-nav {
  display: flex;
  gap: 24px;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text-light);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.main-nav a:hover {
  color: var(--color-primary);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
}

.stat-label {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Sections */
.section {
  padding: 64px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-intro {
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 32px;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 20px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tab-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* Document List */
.document-list {
  display: grid;
  gap: 12px;
}

.document-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.document-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.document-item.checked {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.document-checkbox {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.document-info {
  flex: 1;
}

.document-name {
  font-weight: 600;
  margin-bottom: 4px;
}

.document-retention {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.document-retention strong {
  color: var(--color-secondary);
}

.document-date {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.document-date label {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.document-date input {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  width: 100px;
}

/* Add Custom */
.add-custom {
  margin-top: 32px;
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.add-custom h3 {
  font-size: 1rem;
  margin-bottom: 16px;
}

.custom-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.custom-form input {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
}

.custom-form input:first-child {
  flex: 1;
  min-width: 200px;
}

.custom-form input:nth-child(2) {
  width: 120px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

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

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-text {
  background: transparent;
  color: var(--color-text-light);
  text-decoration: underline;
}

.btn-text:hover {
  color: var(--color-accent);
}

/* Schedule Controls */
.schedule-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

/* Schedule Output */
.schedule-output {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-light);
}

.empty-state svg {
  margin-bottom: 16px;
}

.empty-state h3 {
  color: var(--color-text);
  margin-bottom: 8px;
}

.schedule-group {
  margin-bottom: 32px;
}

.schedule-group:last-child {
  margin-bottom: 0;
}

.schedule-group h3 {
  font-size: 1.125rem;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary-light);
}

.schedule-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.schedule-item:last-child {
  border-bottom: none;
}

.schedule-date {
  font-weight: 600;
  color: var(--color-secondary);
  min-width: 100px;
}

.schedule-name {
  flex: 1;
}

.schedule-status {
  font-size: 0.8125rem;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
}

.status-ready {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}

.status-future {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Guide Grid */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.guide-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.guide-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.guide-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

.guide-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* Common Mistakes */
.common-mistakes {
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 48px;
}

.common-mistakes h3 {
  color: var(--color-accent);
  margin-bottom: 16px;
}

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

.common-mistakes li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  font-size: 0.9375rem;
}

.common-mistakes li::before {
  content: "!";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* FAQ */
.faq-section {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 24px;
}

.faq-section h3 {
  margin-bottom: 16px;
}

details {
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

details:last-child {
  border-bottom: none;
}

summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-primary);
}

details[open] summary::after {
  content: "−";
}

details p {
  margin-top: 12px;
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  background: var(--color-text);
  color: white;
  padding: 48px 0 24px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.125rem;
}

.footer-brand p {
  color: var(--color-text-lighter);
  font-size: 0.875rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--color-text-lighter);
  text-decoration: none;
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8125rem;
  color: var(--color-text-lighter);
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .category-tabs,
  .add-custom,
  .schedule-controls,
  .hero-stats {
    display: none !important;
  }
  
  .hero {
    background: none !important;
    color: black !important;
    padding: 20px 0 !important;
  }
  
  .hero h1 {
    color: black !important;
  }
  
  .section {
    padding: 20px 0 !important;
  }
  
  .schedule-output {
    padding: 0 !important;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.875rem;
  }
  
  .hero-stats {
    gap: 24px;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .main-nav {
    display: none;
  }
  
  .document-item {
    flex-direction: column;
  }
  
  .custom-form {
    flex-direction: column;
  }
  
  .custom-form input:nth-child(2) {
    width: 100%;
  }
  
  .schedule-controls {
    flex-direction: column;
  }
  
  .schedule-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 48px 0;
  }
  
  .hero h1 {
    font-size: 1.5rem;
  }
  
  .section h2 {
    font-size: 1.5rem;
  }
  
  .category-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 8px;
  }
  
  .tab-btn {
    white-space: nowrap;
  }
}


/* 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;
}