/* Variables */
:root {
  --primary: #2c3e50;
  --secondary: #e74c3c;
  --accent: #ecf0f1;
  --dark: #1a252f;
  --light: #f5f5f5;
  --gray: #7f8c8d;
  --text: #333;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --border-radius: 5px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--light);
}

a {
  text-decoration: none;
  color: var(--primary);
  transition: var(--transition);
}

a:hover {
  color: var(--secondary);
}

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Typography */
h1, h2, h3 {
  font-family: 'Noto Serif JP', 'Georgia', serif;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

h2:after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--secondary);
  margin: 1rem auto 0;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--primary);
  color: var(--accent);
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
}

.btn:hover {
  background: var(--secondary);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

/* Header */
header {
  background-color: white;
  box-shadow: var(--shadow);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo-svg {
  margin-right: 0.75rem;
}

.logo span {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--primary);
}

/* Navigation */
#menu-toggle {
  display: none;
}

.menu-icon {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

.nav-menu {
  display: flex;
}

.nav-menu li {
  margin-left: 2rem;
}

.nav-menu a {
  color: var(--primary);
  font-weight: 500;
}

.nav-menu a:hover {
  color: var(--secondary);
}

/* Hero Section */
.hero {
  background-color: var(--dark);
  color: white;
  padding: 6rem 0;
  text-align: center;
  background-image: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero span {
  color: var(--secondary);
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

/* Collection Section */
.collection {
  padding: 5rem 0;
  background-color: white;
}

.knife-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.knife-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.knife-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.knife-icon {
  margin-bottom: 1.5rem;
}

.knife-card h3 {
  color: var(--primary);
}

.knife-card p {
  color: var(--text);
}

/* Craftsmanship Section */
.craftsmanship {
  padding: 5rem 0;
  background-color: var(--light);
}

.craft-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 3rem;
}

.craft-text p {
  margin-bottom: 1.5rem;
}

.craft-image {
  text-align: center;
}

/* AI Resources Section */
.ai-resources {
  padding: 5rem 0;
  background-color: white;
}

.section-desc {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
  color: var(--gray);
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.resource-card {
  background-color: var(--light);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.resource-card h3 {
  color: var(--primary);
  border-bottom: 2px solid var(--secondary);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.resource-card ul li {
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.5rem;
}

.resource-card ul li:before {
  content: "→";
  color: var(--secondary);
  position: absolute;
  left: 0;
}

/* Contact Section */
.contact {
  padding: 5rem 0;
  background-color: var(--light);
  text-align: center;
}

.contact p {
  max-width: 700px;
  margin: 0 auto 2rem;
}

.contact-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.contact-detail {
  background-color: white;
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

/* Footer */
footer {
  background-color: var(--dark);
  color: white;
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.footer-logo span {
  margin-left: 0.75rem;
  font-weight: 600;
  color: white;
}

.footer-links {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links a {
  color: var(--accent);
}

.footer-links a:hover {
  color: var(--secondary);
}

.copyright {
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 992px) {
  .craft-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .menu-icon {
    display: block;
  }
  
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 999;
  }
  
  .nav-menu li {
    margin: 0.75rem 0;
  }
  
  #menu-toggle:checked ~ .nav-menu {
    transform: translateY(0);
  }
  
  .contact-info {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .knife-grid,
  .resources-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}