:root {
  --color-primary: #0D1164;
  --color-secondary: #640D5F;
  --color-accent: #EA2264;
  --color-warm: #F78D60;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-bg: #ffffff;
  --color-bg-light: #f8f8f8;

  --font-primary: 'Noto Sans JP', sans-serif;
  --font-secondary: 'Playfair Display', serif;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  --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);

  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-secondary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  margin-bottom: var(--space-md);
  font-size: clamp(0.875rem, 2vw, 1rem);
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.header {
  position: relative;
  padding: var(--space-md) 0;
  background: var(--color-bg);
  z-index: 1000;
}

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

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

.logo img {
  width: 4rem;
  position: relative;
  z-index: 20;
}

.logo img {
  display: inline-block;
  transform: rotate(-5deg);
  transition: transform var(--transition-normal);
}

.logo:hover img {
  transform: rotate(0);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .logo img {
    width: 3rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 768px) {
  .logo img {
    width: 3rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 576px) {
  .logo img {
    width: 2rem;
    position: relative;
    z-index: 20;
  }
}

@media (max-width: 400px) {
  .logo img {
    width: 2rem;
    position: relative;
    z-index: 20;
  }
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  padding: var(--space-xs);
}

.nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  font-size: clamp(0.875rem, 2vw, 1rem);
  padding: var(--space-xs) var(--space-sm);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 80%;
}

.hero {
  padding: var(--space-xxl) 0;
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-text {
  z-index: 2;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

.hero-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: clamp(0.875rem, 2vw, 1rem);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

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


.section {
  padding: var(--space-xxl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-xxl);
  color: var(--color-primary);
}

.z-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xxl);
}

.z-item {
  padding: var(--space-lg);
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.z-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.z-item-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.z-item-title {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.product-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.product-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.product-content {
  padding: var(--space-lg);
}

.product-title {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: var(--space-md);
}

.contact-section {
  padding: var(--space-xxl) 0;
  background: var(--color-bg-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: clamp(0.875rem, 2vw, 1rem);
  color: var(--color-text);
  font-weight: 500;
}

.form-input,
.form-textarea {
  padding: var(--space-sm);
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: clamp(0.875rem, 2vw, 1rem);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.checkbox-group input[type="checkbox"] {
  margin-top: 0.25rem;
}

.checkbox-group label {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  color: var(--color-text-light);
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 400px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.footer {
  background: var(--color-primary);
  color: white;
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: var(--space-xxl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--space-md);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(0.875rem, 2vw, 1rem);
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
  color: rgba(255, 255, 255, 0.7);
}

.privacy-popup {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  background: white;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.privacy-popup.show {
  opacity: 1;
  pointer-events: all;
}

.privacy-popup-content {
  margin-bottom: var(--space-md);
}

.privacy-popup-buttons {
  display: flex;
  gap: var(--space-sm);
}

.privacy-popup-buttons .btn {
  flex: 1;
  padding: var(--space-xs) var(--space-md);
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
}

.thank-you-content {
  text-align: center;
  padding: var(--space-xxl) 0;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.thank-you-icon {
  width: 5rem;
  height: 5rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
}

.error-content {
  text-align: center;
  padding: var(--space-xxl) 0;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.error-code {
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.teachers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.teacher-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition);
}

.teacher-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.teacher-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: var(--space-xxl) var(--space-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 9999;
  }

  .nav.active {
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    width: 100%;
    text-align: left;
    padding: var(--space-sm);
  }

  .hero-content {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .z-layout {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .privacy-popup {
    max-width: calc(100% - var(--space-lg));
    right: var(--space-md);
    left: var(--space-md);
  }
}

@media (max-width: 320px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .section {
    padding: var(--space-xl) 0;
  }

  .hero {
    padding: var(--space-xl) 0;
  }
}