/* ============================================
   F04 麺屋 雷神
   Concept: Ramen × Vertical Text × Powerful Japanese
   Palette: jet-black / thunder-yellow / scarlet / ecru
   ============================================ */

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

:root {
  --color-bg:       #0A0A0A;
  --color-bg-alt:   #141414;
  --color-ecru:     #F5E6D3;
  --color-yellow:   #F4C430;
  --color-scarlet:  #C8302C;
  --color-text:     #F5E6D3;
  --color-text-sub: #8A8070;
  --color-rule:     #2A2420;

  --font-display: "Yuji Syuku", serif;
  --font-body:    "Zen Kaku Gothic New", sans-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: 1.8;
  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-yellow);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-ecru); }

ul { list-style: none; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px var(--container-pad);
  background: transparent;
}

.header__logo {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--color-yellow);
}

.header__nav { display: flex; gap: 24px; }

.header__link {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
}
.header__link:hover { color: var(--color-yellow); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero__bg {
  position: absolute;
  inset: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.2);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.85) 0%, rgba(10,10,10,0.5) 50%, rgba(10,10,10,0.75) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero__kanji {
  font-family: var(--font-display);
  font-size: clamp(160px, 28vw, 320px);
  line-height: 1;
  color: var(--color-yellow);
  opacity: 0.08;
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  user-select: none;
}

.hero__text {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.hero__vertical-block {
  padding-top: 8px;
}

.hero__vertical-text {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--color-yellow);
  opacity: 0.7;
}

.hero__title {
  font-family: var(--font-display);
  line-height: 1.1;
}

.hero__title-top {
  display: block;
  font-size: clamp(36px, 6vw, 56px);
  letter-spacing: 0.15em;
  color: var(--color-ecru);
}

.hero__title-bottom {
  display: block;
  font-size: clamp(64px, 14vw, 140px);
  letter-spacing: 0.08em;
  color: var(--color-yellow);
  text-shadow: 0 0 80px rgba(244, 196, 48, 0.3);
}

.hero__tagline {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--color-text-sub);
  margin-top: 24px;
  letter-spacing: 0.15em;
}

.hero__thunder {
  position: absolute;
  top: 0;
  left: 30%;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, var(--color-yellow) 40%, var(--color-yellow) 42%, transparent 100%);
  opacity: 0.04;
}

/* ---------- Kodawari ---------- */
.kodawari {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  border-top: 4px solid var(--color-yellow);
}

.kodawari__heading {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 64px;
}

.kodawari__heading-kanji {
  font-family: var(--font-display);
  font-size: 96px;
  line-height: 1;
  color: var(--color-yellow);
  opacity: 0.2;
}

.kodawari__heading-text {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.15em;
}

.kodawari__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.kodawari__card {
  padding: 40px 0;
  border-top: 1px solid var(--color-rule);
}

.kodawari__number {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--color-scarlet);
  display: block;
  margin-bottom: 16px;
}

.kodawari__title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  color: var(--color-ecru);
}

.kodawari__desc {
  font-size: 13px;
  color: var(--color-text-sub);
  line-height: 2;
}

/* ---------- Menu ---------- */
.menu {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  background: var(--color-bg-alt);
  border-top: 4px solid var(--color-scarlet);
}

.menu__heading {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.15em;
  margin-bottom: 48px;
}

.menu__item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-rule);
}

.menu__item--featured {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: center;
  padding: 32px 0;
  border-bottom: 2px solid var(--color-yellow);
}

.menu__item-image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  filter: saturate(0.8) contrast(1.1);
}

.menu__item-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--color-bg);
  background: var(--color-yellow);
  padding: 3px 12px;
  margin-bottom: 8px;
}

.menu__item-name {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.menu__item:not(.menu__item--featured) .menu__item-name {
  font-size: 18px;
}

.menu__item-desc {
  font-size: 13px;
  color: var(--color-text-sub);
  margin-bottom: 8px;
}

.menu__item-price {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--color-yellow);
}

.menu__item:not(.menu__item--featured) .menu__item-price {
  font-size: 16px;
}

.menu__toppings {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-rule);
}

.menu__toppings-title {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}

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

.menu__toppings-grid span {
  font-size: 13px;
  color: var(--color-text-sub);
  padding: 8px 0;
  border-bottom: 1px solid var(--color-rule);
}

/* ---------- Access ---------- */
.access {
  padding: 120px var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  border-top: 4px solid var(--color-yellow);
}

.access__heading {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.15em;
  margin-bottom: 48px;
}

.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: 14px;
  color: var(--color-yellow);
  letter-spacing: 0.08em;
}

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

.access__photo img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.1);
}

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

/* ---------- Footer ---------- */
.footer {
  border-top: 4px solid var(--color-scarlet);
  padding: 64px var(--container-pad) 24px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-rule);
}

.footer__kanji {
  font-family: var(--font-display);
  font-size: 56px;
  color: var(--color-scarlet);
  opacity: 0.3;
  display: block;
  margin-bottom: 8px;
}

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

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

.footer__sns {
  display: flex;
  gap: 24px;
}
.footer__sns a {
  font-size: 12px;
  color: var(--color-text-sub);
}

.footer__copy {
  text-align: center;
  margin-top: 24px;
  font-size: 11px;
  color: var(--color-text-sub);
  opacity: 0.4;
}

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

  .header { padding: 12px var(--container-pad); }
  .header__logo { font-size: 24px; }
  .header__nav { gap: 16px; }
  .header__link { font-size: 11px; }

  .hero { min-height: 520px; }
  .hero__kanji { font-size: 140px; }
  .hero__title-bottom { font-size: clamp(48px, 12vw, 80px); }
  .hero__vertical-block { display: none; }

  .kodawari__heading-kanji { font-size: 64px; }
  .kodawari__grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .menu__item--featured {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .menu__item-image img { aspect-ratio: 16/9; }
  .menu__toppings-grid { grid-template-columns: repeat(2, 1fr); }

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

  .footer__inner {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header__nav { gap: 10px; }

  .hero__title-top { font-size: 28px; }
  .hero__title-bottom { font-size: 48px; }
  .hero__kanji { font-size: 100px; right: 0; }

  .kodawari__heading-kanji { font-size: 48px; }

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

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