/* ============================================
   HINIARATA Corporate Site - Static HTML
   Design: 赤・緑を主体としたシンプルで信頼感のあるデザイン
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --color-primary-red: #FF0000;
  --color-primary-green: #00CC00;
  --color-white: #FFFFFF;
  --color-dark-bg: #1a1a1a;
  --color-light-gray: #f5f5f5;
  --color-gray: #666666;
  --color-dark-gray: #333333;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ============================================
   HEADER
   ============================================ */

header {
  background-color: var(--color-white);
  border-bottom: 1px solid #e0e0e0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-dark-gray);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-red);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  border-radius: var(--radius-md);
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

nav a {
  text-decoration: none;
  color: var(--color-primary-green);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.cta-button {
  background-color: var(--color-primary-red) !important;
  color: var(--color-white) !important;
  padding: var(--spacing-xs) var(--spacing-md) !important;
  border-radius: var(--radius-md);
  transition: background-color 0.3s ease;
}

.cta-button:hover {
  background-color: #cc0000 !important;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  nav ul {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  background: linear-gradient(135deg, rgba(139, 69, 19, 0.85) 0%, rgba(205, 92, 92, 0.9) 50%, rgba(139, 69, 19, 0.85) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

.hero .button {
  display: inline-block;
  background-color: var(--color-primary-red);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.hero .button:hover {
  background-color: #cc0000;
  transform: translateY(-2px);
}

/* ============================================
   SECTIONS
   ============================================ */

section {
  padding: var(--spacing-2xl) var(--spacing-md);
}

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

.dark-bg {
  background-color: var(--color-dark-bg);
  color: var(--color-white);
}

section h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark-gray);
}

section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-dark-gray);
  text-align: center;
}

section h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-md);
}

section p {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
  color: var(--color-gray);
}

.alt-bg h2,
.alt-bg h3 {
  color: var(--color-dark-gray);
}

.dark-bg h2,
.dark-bg h3 {
  color: var(--color-white);
}

.dark-bg p {
  color: rgba(255, 255, 255, 0.9);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--color-white);
  border: 2px solid var(--color-primary-green);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark-gray);
}

.card p {
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
}

.card a {
  color: var(--color-primary-red);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.card a:hover {
  color: #cc0000;
}

/* ============================================
   BUTTONS
   ============================================ */

.button {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.button-primary:hover {
  background-color: #cc0000;
  transform: translateY(-2px);
}

.button-secondary {
  background-color: var(--color-primary-green);
  color: var(--color-white);
}

.button-secondary:hover {
  background-color: #00aa00;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--color-dark-bg);
  color: rgba(255, 255, 255, 0.9);
  padding: var(--spacing-2xl) var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

footer h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

footer ul {
  list-style: none;
}

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

footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--color-primary-red);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   FORMS
   ============================================ */

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  border: 1px solid #ddd;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-dark-gray);
}

/* ============================================
   ACCORDION
   ============================================ */

.accordion-item {
  border: 1px solid #ddd;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.accordion-header {
  background-color: var(--color-light-gray);
  padding: var(--spacing-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.accordion-header:hover {
  background-color: #e8e8e8;
}

.accordion-content {
  padding: var(--spacing-md);
  display: none;
  background-color: var(--color-white);
}

.accordion-content.active {
  display: block;
}

.accordion-toggle {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.accordion-toggle.active {
  transform: rotate(180deg);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  section h1 {
    font-size: 1.8rem;
  }
  
  section h2 {
    font-size: 1.5rem;
  }
  
  nav ul {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 1.5rem;
  }
  
  section h1 {
    font-size: 1.3rem;
  }
  
  section h2 {
    font-size: 1.2rem;
  }
}

/* ============================================
   UTILITIES
   ============================================ */

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

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.hidden {
  display: none;
}