/*
Theme Name: Butsudan Heritage
Description: 仏壇店向けカスタムテーマ。「静寂に宿る、職人の息吹。」をテーマに、墨・金・木目・和紙を基調とした静謐なデザイン。
Version: 1.0
Author: ITさぽーとぐんま
Text Domain: butsudan-heritage
*/

/* =========================================
   Design Tokens (Serene Heritage)
   ========================================= */
:root {
  /* Colors */
  --color-surface: #fdf6f5;
  --color-surface-dim: #e6dde2;
  --color-surface-bright: #fdf6f5;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f8eef0;
  --color-surface-container: #f4e7ea;
  --color-surface-container-high: #efe0e4;
  --color-surface-container-highest: #e9d8de;
  --color-on-surface: #2e2630;
  --color-on-surface-variant: #6e6270;
  --color-outline: #998d9e;
  --color-outline-variant: #ddccd4;

  /* Primary: 藤紫 (Soft Wisteria Purple) */
  --color-primary: #6b5b8e;
  --color-on-primary: #ffffff;
  --color-primary-container: #efe4f5;
  --color-on-primary-container: #4a3d68;

  /* Secondary: 桜桃 (Rose Pink) */
  --color-secondary: #c0728a;
  --color-on-secondary: #ffffff;
  --color-secondary-container: #fbdfe4;
  --color-on-secondary-container: #8a4358;
  --color-secondary-fixed: #f6cdd6;
  --color-secondary-fixed-dim: #e9aebb;

  /* Tertiary: クリーム (Warm Cream / Gold accent) */
  --color-tertiary: #8a6d3f;
  --color-tertiary-container: #f3e6cf;
  --color-on-tertiary-container: #b89a63;
  --color-tertiary-fixed: #fbf0e3;
  --color-tertiary-fixed-dim: #ecd9bf;
  --color-on-tertiary-fixed-variant: #8a7559;

  /* Status */
  --color-error: #ba1a1a;
  --color-on-error: #ffffff;

  /* Typography */
  --font-serif: "Noto Serif JP", serif;
  --font-sans: "Hanken Grotesk", sans-serif;

  --fs-display-lg: 48px;
  --fs-headline-lg: 32px;
  --fs-headline-lg-mobile: 26px;
  --fs-body-md: 16px;
  --fs-label-sm: 12px;

  /* Spacing */
  --unit: 8px;
  --container-max: 1200px;
  --gutter: 32px;
  --margin-mobile: 20px;
  --section-gap: 120px;
  --section-gap-mobile: 64px;

  /* Radius */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
}

/* =========================================
   Reset & Base
   ========================================= */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--fs-body-md);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-on-surface);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

button,
input,
textarea,
select {
  font-family: var(--font-sans);
}

/* =========================================
   Layout helpers
   ========================================= */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--margin-mobile);
  }
}

.section {
  padding: var(--section-gap) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--section-gap-mobile) 0;
  }
}

.section--surface-low {
  background-color: var(--color-surface-container-low);
}

.section--dark {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

/* =========================================
   Typography helpers
   ========================================= */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-secondary);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 0;
}

.display-lg {
  font-size: var(--fs-display-lg);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.headline-lg {
  font-size: var(--fs-headline-lg);
  line-height: 1.3;
}

@media (max-width: 768px) {
  .display-lg,
  .headline-lg {
    font-size: var(--fs-headline-lg-mobile);
    line-height: 1.3;
  }
}

p {
  margin: 0 0 1em;
}

.text-muted {
  color: var(--color-on-surface-variant);
}

/* =========================================
   Header / Navigation
   ========================================= */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--unit) 0;
  border-bottom: 1px solid var(--color-outline-variant);
  background-color: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding-top: calc(var(--unit) * 1.5);
  padding-bottom: calc(var(--unit) * 1.5);
}

.site-branding a {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.main-navigation ul {
  display: flex;
  gap: calc(var(--unit) * 4);
}

.main-navigation a {
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  transition: color 0.3s ease;
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-secondary);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  padding: calc(var(--unit) * 1.25) calc(var(--unit) * 2.5);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid var(--color-primary);
  transition: letter-spacing 0.3s ease, background-color 0.3s ease;
}

.header-cta:hover {
  letter-spacing: 0.18em;
  background-color: var(--color-tertiary);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-primary);
}

@media (max-width: 900px) {
  .main-navigation {
    display: none;
  }
  .header-cta {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .main-navigation.is-open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-outline-variant);
    padding: var(--unit) var(--margin-mobile) calc(var(--unit) * 3);
  }
  .main-navigation.is-open ul {
    flex-direction: column;
    gap: calc(var(--unit) * 2);
  }
}

/* =========================================
   Hero
   ========================================= */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background-color: var(--color-tertiary-fixed);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

/* Split hero (text + product image, no full-bleed photo) */
.hero--split {
  min-height: auto;
  background: none;
  padding: calc(var(--unit) * 8) 0;
}

.hero--split .container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: calc(var(--gutter) * 1.5);
  align-items: center;
}

@media (max-width: 900px) {
  .hero--split .container {
    grid-template-columns: 1fr;
    gap: calc(var(--unit) * 4);
  }
  .hero--split {
    padding: calc(var(--unit) * 5) 0;
  }
}

.hero--split .hero-content {
  position: static;
  background: none;
  border: none;
  margin: 0;
  max-width: none;
  padding: 0;
}

.hero-visual {
  position: relative;
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-secondary-fixed-dim);
  padding: calc(var(--unit) * 3);
  aspect-ratio: 4 / 3.4;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual img {
  max-height: 100%;
  width: auto;
  object-fit: contain;
}

@media (max-width: 900px) {
  .hero-visual {
    aspect-ratio: 4 / 3;
    padding: calc(var(--unit) * 2);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  background-color: rgba(251, 249, 244, 0.85);
  padding: calc(var(--unit) * 5) calc(var(--unit) * 6);
  max-width: 520px;
  margin-left: var(--gutter);
  border: 1px solid var(--color-outline-variant);
}

@media (max-width: 768px) {
  .hero-content {
    margin: 0 var(--margin-mobile);
    padding: calc(var(--unit) * 3) calc(var(--unit) * 4);
    max-width: none;
  }
}

.hero-content .eyebrow {
  display: block;
  margin-bottom: var(--unit);
}

.hero-content p {
  margin-top: var(--unit);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--unit);
  padding: calc(var(--unit) * 1.5) calc(var(--unit) * 3.5);
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid var(--color-primary);
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  letter-spacing: 0.18em;
  background-color: var(--color-tertiary);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-on-tertiary-fixed-variant);
}

.btn--ghost:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

/* =========================================
   Intro / Philosophy section
   ========================================= */
.intro-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  align-items: center;
}

@media (max-width: 900px) {
  .intro-section .container {
    grid-template-columns: 1fr;
  }
}

.intro-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--color-outline-variant);
}

.intro-text h2 {
  margin: var(--unit) 0 calc(var(--unit) * 2);
}

.intro-text .btn {
  margin-top: var(--unit);
}

/* =========================================
   Collection grid (front page)
   ========================================= */
.collection-heading {
  text-align: center;
  margin-bottom: calc(var(--unit) * 6);
}

.collection-heading h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 1px;
  background-color: var(--color-secondary);
  margin: calc(var(--unit) * 2) auto 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}

@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

.product-card {
  display: block;
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
}

.product-card__image {
  position: relative;
  border: 1px solid var(--color-secondary-fixed-dim);
  margin: var(--unit);
  overflow: hidden;
}

.product-card__image img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .product-card__image img {
  transform: scale(1.03);
}

.product-card__badge {
  position: absolute;
  top: var(--unit);
  right: var(--unit);
  background-color: var(--color-surface-container-lowest);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.product-card__body {
  padding: var(--unit) calc(var(--unit) * 3) calc(var(--unit) * 3);
}

.product-card__eyebrow {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-secondary);
}

.product-card__title {
  font-size: 22px;
  margin: calc(var(--unit) * 0.75) 0;
}

.product-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-on-surface-variant);
  border-top: 1px solid var(--color-outline-variant);
  padding-top: var(--unit);
  margin-top: var(--unit);
}

.product-card__price {
  font-weight: 600;
  color: var(--color-on-surface);
}

/* =========================================
   Archive / Product list with filters
   ========================================= */
.archive-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--gutter);
}

@media (max-width: 900px) {
  .archive-layout {
    grid-template-columns: 1fr;
  }
}

.filter-panel h3 {
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--unit);
}

.filter-group {
  margin-bottom: calc(var(--unit) * 4);
}

.filter-group label {
  display: flex;
  align-items: center;
  gap: var(--unit);
  font-family: var(--font-sans);
  font-size: 14px;
  margin-bottom: calc(var(--unit) * 0.75);
  cursor: pointer;
}

.filter-group input[type="checkbox"] {
  accent-color: var(--color-primary);
}

.page-title {
  margin-bottom: var(--unit);
}

.page-intro {
  margin-bottom: calc(var(--unit) * 5);
  max-width: 640px;
}

/* =========================================
   Single product
   ========================================= */
.single-product {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--gutter) * 1.5);
}

@media (max-width: 900px) {
  .single-product {
    grid-template-columns: 1fr;
  }
}

.single-product__gallery img {
  border: 1px solid var(--color-secondary-fixed-dim);
}

.single-product__meta {
  font-family: var(--font-sans);
  font-size: 14px;
  border-top: 1px solid var(--color-outline-variant);
  border-bottom: 1px solid var(--color-outline-variant);
  padding: calc(var(--unit) * 2) 0;
  margin: calc(var(--unit) * 3) 0;
}

.single-product__meta dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  row-gap: calc(var(--unit) * 1);
}

.single-product__meta dt {
  color: var(--color-on-surface-variant);
}

.single-product__price {
  font-size: 28px;
  font-family: var(--font-serif);
  margin: var(--unit) 0 calc(var(--unit) * 3);
}

/* =========================================
   Craftsmanship / story page
   ========================================= */
.story-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  align-items: center;
  margin-bottom: var(--section-gap);
}

@media (max-width: 900px) {
  .story-block {
    grid-template-columns: 1fr;
    margin-bottom: var(--section-gap-mobile);
  }
}

.story-block--reverse .story-image {
  order: 2;
}

@media (max-width: 900px) {
  .story-block--reverse .story-image {
    order: 0;
  }
}

.story-image img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(15%);
}

.story-block h3 {
  font-size: var(--fs-headline-lg-mobile);
  margin-bottom: var(--unit);
}

.quote-block {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--section-gap);
  padding: calc(var(--unit) * 5) 0;
}

@media (max-width: 900px) {
  .quote-block {
    margin-bottom: var(--section-gap-mobile);
  }
}

.quote-block blockquote {
  font-size: var(--fs-headline-lg-mobile);
  margin: 0 0 var(--unit);
  font-style: normal;
}

.quote-block cite {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-on-surface-variant);
}

/* Decorative divider (Mon-inspired) */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--unit);
  margin: var(--section-gap) 0;
  color: var(--color-secondary);
}

@media (max-width: 900px) {
  .divider {
    margin: var(--section-gap-mobile) 0;
  }
}

.divider::before,
.divider::after {
  content: "";
  height: 1px;
  width: 80px;
  background: linear-gradient(to var(--dir, right), transparent, var(--color-outline-variant));
}

.divider::after {
  --dir: left;
}

/* =========================================
   CTA section
   ========================================= */
.cta-section {
  text-align: center;
}

.cta-section h2 {
  margin-bottom: var(--unit);
}

.cta-section p {
  max-width: 560px;
  margin: 0 auto calc(var(--unit) * 4);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--unit);
  flex-wrap: wrap;
}

.section--dark .btn--primary {
  background-color: var(--color-secondary-container);
  border-color: var(--color-secondary-container);
  color: var(--color-on-secondary-container);
}

.section--dark .btn--ghost {
  border-color: var(--color-on-primary-container);
  color: var(--color-on-primary);
}

/* =========================================
   Newsletter
   ========================================= */
.newsletter {
  text-align: center;
}

.newsletter h2 {
  margin: var(--unit) 0 calc(var(--unit) * 3);
}

.newsletter-form {
  display: flex;
  justify-content: center;
  gap: var(--unit);
  max-width: 480px;
  margin: 0 auto;
}

.newsletter-form input[type="email"] {
  flex: 1;
  padding: calc(var(--unit) * 1.5) calc(var(--unit) * 2);
  border: 1px solid var(--color-outline-variant);
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius);
  font-size: 14px;
}

/* =========================================
   About / Map section
   ========================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gutter);
  align-items: start;
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--unit) * 4);
  }
}

.about-map iframe {
  display: block;
  width: 100%;
  min-height: 320px;
}

/* =========================================
   Footer
   ========================================= */
.site-footer {
  background-color: var(--color-surface-container-low);
  border-top: 1px solid var(--color-outline-variant);
  padding: var(--section-gap) 0 calc(var(--unit) * 4);
}

@media (max-width: 900px) {
  .site-footer {
    padding-top: var(--section-gap-mobile);
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--gutter);
  margin-bottom: var(--section-gap-mobile);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: calc(var(--unit) * 4);
    margin-bottom: calc(var(--unit) * 6);
  }
}

.footer-brand h3 {
  font-size: 20px;
  margin-bottom: var(--unit);
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: var(--fs-label-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: calc(var(--unit) * 2);
}

.footer-grid ul li {
  margin-bottom: var(--unit);
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid var(--color-outline-variant);
  padding-top: calc(var(--unit) * 3);
  text-align: center;
  font-size: 12px;
  color: var(--color-on-surface-variant);
}

/* =========================================
   Misc
   ========================================= */
.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--unit);
  z-index: 1000;
}