/* Header & navigation */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  pointer-events: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: calc(var(--max-width) + var(--space-4xl));
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-2xl);
  pointer-events: auto;
}

.site-header__brand {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-washi);
  transition: color var(--transition-fast);
}

.site-header--light .site-header__brand {
  color: var(--color-ink);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
}

.site-nav__link {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-washi);
  opacity: 0.72;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link--active {
  opacity: 1;
}

.site-header--light .site-nav__link {
  color: var(--color-ink);
}

.site-header__toggle {
  display: none;
  width: 28px;
  height: 28px;
  position: relative;
}

.site-header__toggle span,
.site-header__toggle span::before,
.site-header__toggle span::after {
  display: block;
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-washi);
  transition: transform var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast);
}

.site-header--light .site-header__toggle span,
.site-header--light .site-header__toggle span::before,
.site-header--light .site-header__toggle span::after {
  background: var(--color-ink);
}

.site-header__toggle span {
  top: 50%;
  transform: translateY(-50%);
}

.site-header__toggle span::before,
.site-header__toggle span::after {
  content: "";
}

.site-header__toggle span::before {
  top: -8px;
}

.site-header__toggle span::after {
  top: 8px;
}

.site-header__toggle[aria-expanded="true"] span {
  background: transparent;
}

.site-header__toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 768px) {
  .site-header__inner {
    padding: 0 var(--space-lg);
  }

  .site-header__toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xl);
    padding: var(--space-2xl) var(--space-lg);
    background: var(--color-washi);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .site-nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav--open .site-nav__link {
    color: var(--color-ink);
    opacity: 0.6;
    font-size: 0.8125rem;
  }

  .site-nav--open .site-nav__link:hover {
    opacity: 1;
  }
}

/* Dish band — omakase sequence */

.dish-band {
  width: 100%;
  border-top: 1px solid var(--color-line);
}

.dish-band:last-child {
  border-bottom: 1px solid var(--color-line);
}

.dish-band__inner {
  display: grid;
  grid-template-columns: 4rem 1fr minmax(280px, 42vw);
  align-items: center;
  gap: var(--space-xl) var(--space-2xl);
  max-width: calc(var(--max-width) + var(--space-4xl));
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
}

.dish-band__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  line-height: 1;
  color: var(--color-vermillion);
  letter-spacing: -0.02em;
}

.dish-band__name {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.dish-band__meta {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: var(--space-md);
}

.dish-band__desc {
  font-size: 0.875rem;
  color: var(--color-gray);
  max-width: 36ch;
  line-height: 1.65;
}

.dish-band__visual {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.dish-band__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: translateX(24px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
  transition-delay: 0ms;
}

.dish-band.is-revealed .dish-band__visual img {
  opacity: 1;
  transform: translateX(0);
}

@media (max-width: 900px) {
  .dish-band__inner {
    grid-template-columns: 3rem 1fr;
    grid-template-rows: auto auto;
    padding: var(--space-2xl) var(--space-lg);
  }

  .dish-band__visual {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 9;
  }
}

/* Form */

.form-field {
  margin-bottom: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
}

.form-input {
  width: 100%;
  padding: var(--space-md) 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-line);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-bottom-color: var(--color-ink);
}

.form-input--error {
  border-bottom-color: var(--color-error);
}

.form-input--area {
  resize: vertical;
  min-height: 72px;
}

.form-error {
  display: block;
  font-size: 0.75rem;
  color: var(--color-error);
  margin-top: var(--space-xs);
  min-height: 1.125rem;
}

.form-submit {
  width: 100%;
  margin-top: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-washi);
  background: var(--color-ink);
  border: 1px solid var(--color-ink);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.form-submit:hover {
  background: transparent;
  color: var(--color-ink);
}

@media (max-width: 540px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Footer */

.site-footer {
  padding: var(--space-xl) var(--space-2xl) var(--space-2xl);
  text-align: center;
  border-top: 1px solid var(--color-line);
}

.site-footer__hours {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--color-gray);
  margin-bottom: var(--space-sm);
}

.site-footer__copy {
  font-size: 0.6875rem;
  color: var(--color-gray-light);
  letter-spacing: 0.04em;
}