/* ==========================
   升本酒米店 — style.css
   ========================== */

:root {
  --color-primary:       #5d4020;
  --color-primary-dark:  #3d2b1a;
  --color-primary-light: #f5f0e8;
  --color-secondary:     #8b6340;
  --color-secondary-dark:#6b4a28;
  --color-accent:        #c8a870;
  --color-text:          #2c1a0e;
  --color-text-muted:    #7a6550;
  --color-bg:            #faf8f3;
  --color-bg-alt:        #f5f0e8;
  --color-white:         #ffffff;
  --color-border:        #e0d0b0;

  --font-family:       'Noto Sans JP', sans-serif;
  --font-family-title: 'Noto Serif JP', 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); }

.site-header { position: sticky; top: 0; z-index: 100; background-color: var(--color-primary-dark); border-bottom: 3px solid var(--color-accent); 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-family: var(--font-family-title); font-weight: 700; font-size: 1.3rem; color: var(--color-white); 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: rgba(255,255,255,0.85); 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-accent); border-bottom-color: var(--color-accent); 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-accent); outline: none; }
.hamburger__line { display: block; width: 22px; height: 2px; background-color: var(--color-white); 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); }

.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-white); 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-header { text-align: center; margin-bottom: var(--space-2xl); }
.section-eyebrow { display: inline-block; color: var(--color-secondary); font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: var(--space-xs); }
.section-title { font-family: var(--font-family-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 { background: linear-gradient(135deg, #f5f0e8 0%, #faf8f3 60%, #f0ece0 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-family: var(--font-family-title); font-size: clamp(1.8rem, 4.5vw, 2.5rem); font-weight: 700; line-height: 1.4; 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); }

/* Sake Section */
.sake-section { padding-block: var(--space-3xl); background-color: var(--color-white); }
.sake-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--space-lg); }
.sake-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); display: flex; gap: var(--space-lg); padding: var(--space-lg); transition: box-shadow var(--transition-base), transform var(--transition-base); }
.sake-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.sake-card__image { flex-shrink: 0; width: 100px; }
.sake-card__image svg { width: 100%; }
.sake-card__body { flex: 1; }
.sake-card__name { font-family: var(--font-family-title); font-size: 1.0625rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: 2px; }
.sake-card__brewery { font-size: 0.8125rem; color: var(--color-secondary); margin-bottom: var(--space-xs); }
.sake-card__desc { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.6; margin-bottom: var(--space-sm); }
.sake-card__price { font-size: 0.9375rem; }
.sake-card__price strong { font-size: 1.25rem; color: var(--color-primary); font-weight: 700; }
.price--tax { font-size: 0.75rem; color: var(--color-text-muted); margin-left: 2px; }

/* Rice Section */
.rice-section { padding-block: var(--space-3xl); background-color: var(--color-bg-alt); }
.rice-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--space-lg); }
.rice-card { background: var(--color-white); border-radius: var(--radius-lg); padding: var(--space-xl); box-shadow: var(--shadow-sm); border-left: 4px solid var(--color-secondary); transition: box-shadow var(--transition-base), transform var(--transition-base); }
.rice-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.rice-card__icon { font-size: 2.5rem; margin-bottom: var(--space-sm); }
.rice-card__name { font-family: var(--font-family-title); font-size: 1.125rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: 2px; }
.rice-card__origin { font-size: 0.8125rem; color: var(--color-secondary); margin-bottom: var(--space-xs); }
.rice-card__desc { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.7; margin-bottom: var(--space-sm); }
.rice-card__price { font-size: 0.9375rem; }
.rice-card__price strong { font-size: 1.125rem; color: var(--color-primary); font-weight: 700; }

/* Delivery */
.delivery-section { padding-block: var(--space-3xl); background-color: var(--color-white); }
.delivery-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.delivery-card { background: var(--color-bg-alt); border-radius: var(--radius-lg); padding: var(--space-xl); border-top: 4px solid var(--color-primary); box-shadow: var(--shadow-sm); }
.delivery-card__icon { font-size: 2.5rem; margin-bottom: var(--space-sm); }
.delivery-card__title { font-family: var(--font-family-title); font-size: 1.125rem; font-weight: 700; color: var(--color-primary-dark); margin-bottom: var(--space-sm); }
.delivery-card__desc { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.8; margin-bottom: var(--space-sm); }
.delivery-card__note { font-size: 0.875rem; font-weight: 700; color: var(--color-secondary); }

.store-info { padding-block: var(--space-3xl); background-color: var(--color-bg-alt); }
.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-secondary); font-weight: 700; font-size: 1.25rem; }
.tel-link:hover { text-decoration: underline; }
.hours-row { display: block; }

.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; }

@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-primary-dark); padding: var(--space-md) var(--space-lg) var(--space-xl); border-bottom: 1px solid rgba(255,255,255,0.2); 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 rgba(255,255,255,0.1); font-size: 1.0625rem; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero { padding-block: var(--space-2xl); }
  .sake-card { flex-direction: column; }
  .sake-card__image { width: 80px; }
  .delivery-grid, .store-info__inner { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; gap: var(--space-lg); }
}

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