/* ===========================
   肉の山田屋 — style.css
   =========================== */

:root {
  --color-primary:       #b71c1c;
  --color-primary-dark:  #7f0000;
  --color-primary-light: #ffebee;
  --color-secondary:     #f57f17;
  --color-secondary-dark:#e65100;
  --color-accent:        #ff6f00;
  --color-text:          #1a1a1a;
  --color-text-muted:    #5f6368;
  --color-bg:            #fdf9f9;
  --color-bg-alt:        #fdf3f0;
  --color-white:         #ffffff;
  --color-border:        #f0d0d0;

  --font-family: 'Noto Sans JP', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  --container-max: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul[role="list"] { list-style: none; }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 3px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  height: var(--header-height);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.site-logo__icon { font-size: 1.6rem; flex-shrink: 0; }
.site-logo--light { color: var(--color-white); }

.site-nav__list { display: flex; gap: var(--space-xl); }

.site-nav__link {
  font-weight: 500;
  color: var(--color-text);
  padding-block: var(--space-xs);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.site-nav__link:is(:hover, :focus-visible, .is-active) {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  outline: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: var(--space-xs);
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  transition: border-color var(--transition-fast);
}
.hamburger:focus-visible { border-color: var(--color-primary); outline: none; }
.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 1rem;
  min-height: 44px;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 2px solid transparent;
}
.btn--primary { background-color: var(--color-secondary); color: var(--color-text); border-color: var(--color-secondary); }
.btn--primary:is(:hover, :focus-visible) { background-color: var(--color-secondary-dark); border-color: var(--color-secondary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); outline: none; }
.btn--outline { background-color: transparent; color: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn--outline:is(:hover, :focus-visible) { background-color: var(--color-primary-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); outline: none; }

/* Section Common */
.section-header { text-align: center; margin-bottom: var(--space-2xl); }
.section-eyebrow { display: inline-block; color: var(--color-primary); font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: var(--space-xs); }
.section-title { font-size: clamp(1.5rem, 4vw, 2rem); font-weight: 700; color: var(--color-primary-dark); margin-bottom: var(--space-sm); }
.section-desc { color: var(--color-text-muted); max-width: 600px; margin-inline: auto; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #ffebee 0%, #fff3e0 60%, #fbe9e7 100%);
  padding-block: var(--space-3xl);
  overflow: hidden;
}
.hero__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: center; }
.hero__eyebrow { display: inline-block; background-color: var(--color-primary); color: var(--color-white); font-size: 0.8125rem; font-weight: 700; padding: 3px var(--space-sm); border-radius: var(--radius-full); margin-bottom: var(--space-md); }
.hero__title { font-size: clamp(2rem, 5vw, 2.75rem); font-weight: 700; line-height: 1.3; color: var(--color-primary-dark); margin-bottom: var(--space-md); }
.hero__desc { color: var(--color-text-muted); line-height: 1.8; margin-bottom: var(--space-xl); }
.hero__actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero__visual svg { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* Menu Section */
.menu-section {
  padding-block: var(--space-3xl);
  background-color: var(--color-white);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.menu-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.menu-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.menu-card__image svg { width: 100%; aspect-ratio: 3 / 2; }
.menu-card__body { padding: var(--space-md); }
.menu-card__name { font-size: 1.0625rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: var(--space-xs); }
.menu-card__desc { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.6; margin-bottom: var(--space-sm); }
.menu-card__price { font-size: 1rem; color: var(--color-text); }
.menu-card__price strong { font-size: 1.5rem; color: var(--color-primary); }
.price--tax { font-size: 0.75rem; color: var(--color-text-muted); margin-left: 2px; }

.menu-note { text-align: center; font-size: 0.8125rem; color: var(--color-text-muted); line-height: 1.8; }

/* Products */
.products {
  padding-block: var(--space-3xl);
  background-color: var(--color-bg-alt);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--color-primary);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.product-card__icon { font-size: 2.5rem; margin-bottom: var(--space-sm); line-height: 1; }
.product-card__title { font-size: 1.125rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: var(--space-xs); }
.product-card__desc { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: var(--space-sm); }
.product-card__price { font-size: 0.875rem; color: var(--color-text-muted); }
.product-card__price strong { font-size: 1.125rem; color: var(--color-primary); font-weight: 700; }

/* Store Info */
.store-info { padding-block: var(--space-3xl); background-color: var(--color-white); }
.store-info__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: start; }
.store-info__map { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.store-info__map svg { width: 100%; }

.info-list { display: flex; flex-direction: column; }
.info-list__item { display: grid; grid-template-columns: 110px 1fr; gap: var(--space-md); padding-block: var(--space-md); border-bottom: 1px solid var(--color-border); }
.info-list__item:last-child { border-bottom: none; }
.info-list__label { font-size: 0.875rem; font-weight: 700; color: var(--color-primary-dark); padding-top: 2px; }
.info-list__value { color: var(--color-text); line-height: 1.7; }
.tel-link { color: var(--color-primary); font-weight: 700; font-size: 1.25rem; }
.tel-link:hover { text-decoration: underline; }
.hours-row { display: block; }

/* Footer */
.site-footer { background-color: var(--color-primary-dark); color: var(--color-white); padding-top: var(--space-2xl); }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-xl); padding-bottom: var(--space-xl); border-bottom: 1px solid rgba(255,255,255,0.2); }
.footer__tagline { font-size: 0.875rem; color: rgba(255,255,255,0.65); margin-top: var(--space-xs); }
.footer__nav-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer__nav-list a { font-size: 0.9375rem; color: rgba(255,255,255,0.75); transition: color var(--transition-fast); }
.footer__nav-list a:hover { color: var(--color-white); }
.footer__bottom { padding-block: var(--space-md); }
.footer__copy { font-size: 0.8125rem; color: rgba(255,255,255,0.5); text-align: center; }

/* Responsive */
@media (max-width: 768px) {
  :root { --header-height: 56px; }
  .hamburger { display: flex; }
  .site-nav { display: none; position: fixed; top: var(--header-height); inset-inline: 0; background-color: var(--color-white); padding: var(--space-md) var(--space-lg) var(--space-xl); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); z-index: 99; }
  .site-nav.is-open { display: block; }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__link { display: block; padding: var(--space-md) 0; border-bottom: 1px solid var(--color-border); font-size: 1.0625rem; border-right: none; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero { padding-block: var(--space-2xl); }
  .store-info__inner { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; gap: var(--space-lg); }
}

@media (max-width: 480px) {
  .menu-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
  .btn { width: 100%; }
  .info-list__item { grid-template-columns: 88px 1fr; }
}