:root {
  --color-rice-paper: #F6F5F2;
  --color-warm-stone: #DAD7CF;
  --color-ink-grey: #2E2E2C;
  --color-bamboo: #8E9B8A;
  --color-clay: #B8A89A;
  --color-charcoal: #4A453F;
  --color-gold-dust: #D6C6A1;
  --color-norway-blue: #00205B;
  --color-norway-red: #EF2B2D;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Inter', sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --radius-soft: 4px;
  --transition-slow: 1.2s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-nav: 0.4s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  background-color: var(--color-rice-paper);
  color: var(--color-ink-grey);
  font-family: var(--font-serif);
  line-height: 1.8;
  overflow-x: hidden;
  position: relative;
  background-image: radial-gradient(#DAD7CF 1px, transparent 1px);
  background-size: 40px 40px;
}

body.stillness-mode {
  --transition-slow: 0s;
  background-image: none;
}

body.stillness-mode * {
  animation: none !important;
  transition: opacity 0.5s ease !important;
}

h1, h2, h3, h4 {
  font-weight: 400;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

p {
  margin-bottom: var(--space-sm);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 0.95rem;
  color: var(--color-charcoal);
  letter-spacing: 0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-nav);
}

a.text-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 50%;
  background-color: var(--color-ink-grey);
  transition: width 0.4s ease, left 0.4s ease;
}

a.text-link:hover::after {
  width: 100%;
  left: 0;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md) 0;
}

.section {
  min-height: 100vh;
  padding: var(--space-xl) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-section {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(246, 245, 242, 0.7);
  z-index: 0;
}

.hero-section > * {
  position: relative;
  z-index: 1;
}

.grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.img-wrapper {
  overflow: hidden;
  border-radius: var(--radius-soft);
}

.img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 1.4s ease, filter 0.5s ease;
  filter: brightness(0.95);
}

.img-wrapper:hover img {
  transform: scale(1.03);
  filter: brightness(1.05) contrast(1.05);
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: var(--space-md) var(--space-sm);
  background: rgba(246, 245, 242, 0.9);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.5s ease;
}

header.hidden {
  transform: translateY(-100%);
}

.brand-name {
  display: inline-block;
  text-decoration: none;
  color: var(--color-ink-grey);
}

.brand-name img {
  display: block;
  height: 40px;
  width: auto;
}

.nav-toggle {
  display: none;
  cursor: pointer;
  z-index: 101;
}

.burger-line {
  width: 25px;
  height: 2px;
  background-color: var(--color-ink-grey);
  margin: 6px 0;
  transition: 0.4s;
}

.nav-menu {
  display: flex;
  gap: var(--space-md);
}

.nav-menu a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-rice-paper);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: 0.5s ease;
    z-index: 1000;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-toggle {
    display: block;
  }

  .nav-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: transparent;
    border: none;
    color: var(--color-ink-grey);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: 1001;
    transition: opacity 0.3s;
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    opacity: 1;
    visibility: visible;
  }

  .nav-close:hover {
    opacity: 0.7;
  }

  .nav-close i {
    font-size: 1.5rem;
  }

  body.menu-open {
    overflow: hidden;
  }

  .stillness-toggle {
    display: none;
  }

  body.menu-open .stillness-toggle {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .nav-close {
    display: none;
  }
}

.stillness-toggle {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 102;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  opacity: 0.6;
  transition: opacity 0.3s;
}

.stillness-toggle:hover {
  opacity: 1;
}

footer {
  padding: var(--space-lg) var(--space-sm);
  background-color: var(--color-warm-stone);
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-top: var(--space-sm);
}

form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-md);
  text-align: left;
}

label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--color-charcoal);
}

input, textarea {
  width: 100%;
  padding: var(--space-sm);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-clay);
  font-family: var(--font-serif);
  font-size: 1rem;
  transition: border-color var(--transition-nav);
  border-radius: 0;
}

input:focus, textarea:focus {
  outline: none;
  border-bottom-color: var(--color-ink-grey);
}

input:invalid:not(:focus):not(:placeholder-shown), textarea:invalid:not(:focus):not(:placeholder-shown) {
  border-bottom-color: var(--color-charcoal);
}

.error-message {
  display: block;
  color: var(--color-charcoal);
  font-size: 0.85rem;
  margin-top: 0.5rem;
  min-height: 1.2rem;
  font-family: var(--font-sans);
}

.error-message:empty {
  display: none;
}

button {
  background: transparent;
  border: 1px solid var(--color-ink-grey);
  color: var(--color-ink-grey);
  padding: 1rem 3rem;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.4s ease;
  border-radius: var(--radius-soft);
  margin-top: var(--space-md);
}

button:hover {
  background: var(--color-ink-grey);
  color: var(--color-rice-paper);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(46, 46, 44, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--color-rice-paper);
  padding: var(--space-md);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  border-radius: var(--radius-soft);
  position: relative;
}

.close-modal {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.5rem;
  cursor: pointer;
}

.map-container {
  width: 100%;
  height: 450px;
  filter: grayscale(100%) contrast(90%);
  margin: var(--space-xl) 0;
  border-radius: var(--radius-soft);
  overflow: hidden;
}

iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}