/* Knife Roll Guide - Stylesheet */

/* ==========================================
   CSS Variables
   ========================================== */
:root {
  --color-primary: #2c3e50;
  --color-secondary: #34495e;
  --color-accent: #b87333;
  --color-accent-dark: #8b5a2b;
  --color-text: #333;
  --color-text-light: #666;
  --color-text-muted: #888;
  --color-bg: #fff;
  --color-bg-alt: #f8f9fa;
  --color-bg-dark: #1a252f;
  --color-border: #e0e0e0;
  --color-success: #27ae60;

  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-heading: 'Georgia', 'Times New Roman', serif;

  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 var(--spacing-sm);
  color: var(--color-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin: 0 0 var(--spacing-sm);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-dark);
}

ul {
  margin: 0 0 var(--spacing-sm);
  padding-left: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-xs);
}

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

/* ==========================================
   Layout
   ========================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ==========================================
   Header
   ========================================== */
.site-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.site-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-xs);
  color: #fff;
}

.site-tagline {
  font-size: 1.25rem;
  opacity: 0.9;
  margin: 0;
}

/* ==========================================
   Navigation
   ========================================== */
.main-nav {
  background-color: var(--color-bg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-xs);
  list-style: none;
  margin: 0;
  padding: var(--spacing-sm) 0;
}

.nav-links a {
  color: #fff;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: background-color 0.2s ease;
}

.nav-links a:hover {
  background-color: rgba(255,255,255,0.1);
  color: var(--color-accent);
}

/* ==========================================
   Main Content
   ========================================== */
.main-content {
  padding: var(--spacing-xl) 0;
}

.content-section {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.content-section:last-child {
  border-bottom: none;
}

.section-intro {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
  background: var(--color-bg-alt);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  border-left: 4px solid var(--color-accent);
}

.hero-content h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin: 0;
}

/* ==========================================
   Info Cards Grid
   ========================================== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.info-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.info-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.info-card h3 {
  color: var(--color-accent);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.info-card p {
  color: var(--color-text-light);
  margin: 0;
  font-size: 0.95rem;
}

/* ==========================================
   Type Comparison Cards
   ========================================== */
.type-comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

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

.type-card h3 {
  color: var(--color-primary);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.type-details p {
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

.type-details p:last-child {
  margin-top: var(--spacing-sm);
  color: var(--color-text-light);
}

/* ==========================================
   Materials Grid
   ========================================== */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

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

.material-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.material-rating {
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm) !important;
}

.material-tip {
  background: var(--color-bg-alt);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-top: var(--spacing-sm) !important;
  margin-bottom: 0 !important;
}

/* ==========================================
   Checklist Section
   ========================================== */
.checklist-section {
  background: var(--color-bg-alt);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
}

.checklist-section h3 {
  margin-bottom: var(--spacing-md);
}

.factor {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.factor:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.factor h4 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.factor ul {
  margin-top: var(--spacing-sm);
}

/* ==========================================
   Product Grid
   ========================================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
}

.product-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  position: relative;
  display: flex;
  flex-direction: column;
}

.product-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.product-badge {
  position: absolute;
  top: -10px;
  left: var(--spacing-sm);
  background: var(--color-accent);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.product-card h3 {
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.product-capacity {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm) !important;
}

.product-details {
  flex-grow: 1;
}

.product-details p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.product-pros {
  list-style: none;
  padding: 0;
  margin: var(--spacing-sm) 0;
}

.product-pros li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.product-pros li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

.product-link {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-align: center;
  transition: background-color 0.2s ease;
  margin-top: auto;
}

.product-link:hover {
  background: var(--color-accent-dark);
  color: #fff;
}

/* ==========================================
   Accessory Section
   ========================================== */
.accessory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
}

.accessory-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.accessory-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.accessory-recommendations {
  margin-top: var(--spacing-md);
}

.accessory-item {
  background: var(--color-bg);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  border: 1px solid var(--color-border);
}

.accessory-item h4 {
  color: var(--color-primary);
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

.accessory-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.accessory-link {
  font-size: 0.9rem;
  font-weight: 600;
}

.packing-list {
  columns: 2;
  column-gap: var(--spacing-lg);
}

.packing-list li {
  break-inside: avoid;
}

/* ==========================================
   Care Grid
   ========================================== */
.care-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-md);
}

.care-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.care-card h3 {
  color: var(--color-primary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
}

.care-card ul {
  margin: 0;
  padding-left: var(--spacing-md);
}

.care-card li {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq-list {
  max-width: 800px;
}

.faq-item {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.faq-item h3 {
  color: var(--color-primary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
}

.faq-item p {
  color: var(--color-text-light);
  margin: 0;
}

/* ==========================================
   Comparison Table
   ========================================== */
.table-wrapper {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.comparison-table tr:nth-child(even) {
  background: var(--color-bg-alt);
}

.comparison-table tr:hover {
  background: #eef3f7;
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background: var(--color-bg-dark);
  color: #fff;
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer-tagline {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

.affiliate-disclosure {
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: var(--spacing-sm);
}

.copyright {
  font-size: 0.85rem;
  opacity: 0.5;
  margin: 0;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
  .site-title {
    font-size: 2rem;
  }

  .site-tagline {
    font-size: 1rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links a {
    padding: var(--spacing-xs);
    font-size: 0.8rem;
  }

  .hero-section {
    padding: var(--spacing-md);
  }

  .product-grid,
  .accessory-grid {
    grid-template-columns: 1fr;
  }

  .packing-list {
    columns: 1;
  }

  .comparison-table {
    font-size: 0.85rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-xs);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .info-grid,
  .type-comparison,
  .materials-grid,
  .care-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================
   Smooth Scroll Offset for Fixed Nav
   ========================================== */
section[id] {
  scroll-margin-top: 60px;
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
  .main-nav,
  .product-link,
  .accessory-link {
    display: none;
  }

  .site-header {
    background: #fff;
    color: var(--color-primary);
    padding: var(--spacing-sm) 0;
  }

  .site-title {
    color: var(--color-primary);
  }

  body {
    font-size: 12pt;
  }
}