/* ============================================
   F02 酒蔵 蛍
   Concept: Night Izakaya × Edo Lettering × Film Noir
   Palette: ink-black / lantern-gold / vermillion / ecru
   ============================================ */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:       #0E0B08;
  --color-bg-alt:   #1A1510;
  --color-ecru:     #E8DFCC;
  --color-gold:     #C9A961;
  --color-vermil:   #8B2C20;
  --color-text:     #E8DFCC;
  --color-text-sub: #9A9080;
  --color-rule:     #3A3228;

  --font-display: "Shippori Mincho", serif;
  --font-body:    "Zen Old Mincho", serif;

  --container-max: 1060px;
  --container-pad: 32px;

  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-ecru); }

ul { list-style: none; }

/* ---------- Utilities ---------- */
.section-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 8px;
}
.section-label--light { color: var(--color-gold); }

.section-heading {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 48px;
}
.section-heading--light { color: var(--color-ecru); }

.btn {
  display: inline-block;
  padding: 16px 48px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.12em;
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  transition: all var(--transition);
}
.btn--lantern:hover {
  background-color: var(--color-gold);
  color: var(--color-bg);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: linear-gradient(180deg, rgba(14,11,8,0.95) 0%, rgba(14,11,8,0) 100%);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 20px var(--container-pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ecru);
}

.header__logo-kanji {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--color-gold);
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.15em;
}

.header__nav {
  display: flex;
  gap: 28px;
}

.header__link {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  transition: color var(--transition);
}
.header__link:hover { color: var(--color-gold); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero__image {
  position: absolute;
  inset: 0;
}
.hero__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,11,8,0.4) 0%, rgba(14,11,8,0.7) 60%, rgba(14,11,8,0.95) 100%);
}
.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.1);
}

.hero__content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 var(--container-pad) 80px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.hero__vertical {
  position: absolute;
  top: 50%;
  right: var(--container-pad);
  transform: translateY(-50%);
}

.hero__vertical-text {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  opacity: 0.6;
}

.hero__title-sub {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.hero__title-main {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 88px);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.hero__lead {
  margin-top: 24px;
  font-size: 15px;
  line-height: 2;
  color: var(--color-text-sub);
  max-width: 420px;
}

/* ---------- About ---------- */
.about {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  border-top: 1px solid var(--color-rule);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}

.about__image-col img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  filter: saturate(0.8);
}

.about__body {
  color: var(--color-text-sub);
  margin-bottom: 24px;
  line-height: 2;
}

/* ---------- Menu ---------- */
.menu {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.menu__inner {
  max-width: var(--container-max);
}

.menu__columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.menu__category-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-rule);
}

.menu__item {
  display: flex;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-rule);
}

.menu__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
}

.menu__dots {
  flex: 1;
  margin: 0 12px;
  border-bottom: 1px dotted var(--color-text-sub);
  opacity: 0.4;
  transform: translateY(-4px);
}

.menu__price {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gold);
}

.menu__note {
  text-align: center;
  margin-top: 48px;
  font-size: 12px;
  color: var(--color-text-sub);
}

/* ---------- Gallery ---------- */
.gallery {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.gallery__item { overflow: hidden; }

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.05);
  transition: filter 0.5s ease, transform 0.5s ease;
}
.gallery__item:hover img {
  filter: saturate(1) contrast(1);
  transform: scale(1.03);
}

.gallery__item--tall { grid-row: span 2; }
.gallery__item--tall img { min-height: 100%; }
.gallery__item--wide { grid-column: span 2; }
.gallery__item:not(.gallery__item--tall) img { height: 240px; }

/* ---------- Access ---------- */
.access {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-rule);
}

.access__inner {
  max-width: var(--container-max);
}

.access__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.access__row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-rule);
}

.access__row dt {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}

.access__row dd {
  color: var(--color-text-sub);
  font-size: 14px;
  line-height: 1.7;
}

.access__photo img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  filter: saturate(0.7);
}

.access__caption {
  font-size: 12px;
  color: var(--color-text-sub);
  margin-top: 12px;
  text-align: center;
}

.access__cta {
  text-align: center;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-rule);
}

.access__cta-text {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--color-text-sub);
  margin-bottom: 24px;
  letter-spacing: 0.1em;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-rule);
  padding: 80px var(--container-pad) 32px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-rule);
}

.footer__kanji {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--color-gold);
  opacity: 0.3;
  display: block;
  margin-bottom: 8px;
}

.footer__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.footer__tagline {
  font-size: 12px;
  color: var(--color-text-sub);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  gap: 28px;
}

.footer__links a {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
}

.footer__copy {
  text-align: center;
  margin-top: 32px;
  font-size: 11px;
  color: var(--color-text-sub);
  opacity: 0.5;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  :root { --container-pad: 20px; }

  .section-heading { font-size: 26px; margin-bottom: 36px; }

  .header__nav { gap: 16px; }
  .header__link { font-size: 11px; }

  .hero { min-height: 520px; }
  .hero__title-main { font-size: clamp(36px, 10vw, 56px); }
  .hero__vertical { display: none; }
  .hero__content { padding-bottom: 48px; }

  .about__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .menu__columns {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .gallery__item--wide { grid-column: span 1; }
  .gallery__item--tall { grid-row: span 1; }
  .gallery__item:not(.gallery__item--tall) img { height: 180px; }

  .access__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer__inner {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header__logo-text { display: none; }
  .header__nav { gap: 12px; }
  .header__link { font-size: 10px; }

  .hero__title-main { font-size: 32px; }
  .hero__lead { font-size: 13px; }

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

  .access__row { grid-template-columns: 64px 1fr; gap: 12px; }

  .footer__links { gap: 16px; }
}