/* ==========================
   スタジオ建和 — style.css
   ========================== */

:root {
  --color-primary:       #6a4e38;
  --color-primary-dark:  #4a3020;
  --color-primary-light: #f6f0e8;
  --color-secondary:     #8a6a50;
  --color-accent:        #c8a040;
  --color-text:          #2a2018;
  --color-text-muted:    #6a5848;
  --color-bg:            #fdfaf6;
  --color-bg-alt:        #f6f0e8;
  --color-bg-card:       #ffffff;
  --color-white:         #ffffff;
  --color-border:        #e0d0bc;

  --font-family:         'Noto Sans JP', sans-serif;
  --font-family-serif:   '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(106,78,56,0.08);
  --shadow-md: 0 4px 16px rgba(106,78,56,0.14);

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

  --container-max: 1100px;
  --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: 1.8; -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); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---- Header ---- */
.site-header { position: sticky; top: 0; z-index: 100; background-color: rgba(253,250,246,0.97); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-sm); backdrop-filter: blur(8px); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); height: var(--header-height); }
.site-logo { display: flex; flex-direction: column; gap: 0; text-decoration: none; }
.site-logo__main { font-family: var(--font-family-serif); font-size: 1.25rem; font-weight: 700; color: var(--color-primary); letter-spacing: 0.04em; line-height: 1.2; }
.site-logo__sub { font-size: 0.6rem; color: var(--color-text-muted); letter-spacing: 0.06em; }

.site-nav__list { display: flex; gap: var(--space-xl); }
.site-nav__link { color: var(--color-text-muted); padding-block: var(--space-xs); border-bottom: 2px solid transparent; transition: color var(--transition-fast), border-color var(--transition-fast); font-size: 0.875rem; font-weight: 700; }
.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: 1px 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-muted); 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: 0.75rem 2rem; border-radius: var(--radius-sm); font-weight: 700; font-size: 0.9375rem; min-height: 44px; cursor: pointer; transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast); border: 2px solid transparent; }
.btn--primary { background-color: var(--color-primary); color: white; }
.btn--primary:is(:hover, :focus-visible) { background-color: var(--color-primary-dark); transform: translateY(-2px); outline: none; }
.btn--outline { background-color: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--outline:is(:hover, :focus-visible) { background-color: var(--color-primary); color: white; transform: translateY(-2px); outline: none; }

/* ---- Section header ---- */
.section-header { text-align: center; margin-bottom: var(--space-2xl); }
.section-eyebrow { display: inline-block; color: var(--color-secondary); font-size: 0.6875rem; letter-spacing: 0.25em; margin-bottom: var(--space-xs); font-weight: 700; }
.section-title { font-family: var(--font-family-serif); font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; color: var(--color-text); margin-bottom: var(--space-sm); }
.section-desc { color: var(--color-text-muted); max-width: 520px; margin-inline: auto; font-size: 0.9375rem; }

/* ---- Hero ---- */
.hero { background: linear-gradient(135deg, #f6f0e8 0%, #fdfaf6 60%, #f0ece4 100%); padding-block: var(--space-3xl); }
.hero__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: center; }
.hero__eyebrow { display: inline-block; font-size: 0.75rem; color: var(--color-accent); letter-spacing: 0.2em; font-weight: 700; margin-bottom: var(--space-md); }
.hero__title { font-family: var(--font-family-serif); font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 700; line-height: 1.35; color: var(--color-text); margin-bottom: var(--space-lg); }
.hero__desc { color: var(--color-text-muted); font-size: 0.9375rem; line-height: 2; margin-bottom: var(--space-xl); max-width: 440px; }
.hero__actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero__visual svg { width: 100%; max-width: 460px; margin-inline: auto; }

/* ---- Concept ---- */
.concept-section { padding-block: var(--space-xl); background-color: var(--color-primary); }
.concept-inner { }
.concept-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background-color: rgba(255,255,255,0.15); }
.concept-card { background-color: var(--color-primary); padding: var(--space-xl); }
.concept-card--featured { background-color: var(--color-primary-dark); }
.concept-card__num { display: block; font-family: var(--font-family-serif); font-size: 0.6875rem; color: rgba(200,160,64,0.8); letter-spacing: 0.2em; margin-bottom: var(--space-sm); }
.concept-card__title { font-family: var(--font-family-serif); font-size: 1rem; font-weight: 700; color: white; margin-bottom: var(--space-sm); }
.concept-card__desc { font-size: 0.875rem; color: rgba(255,240,220,0.7); line-height: 1.8; }

/* ---- Properties ---- */
.properties-section { padding-block: var(--space-3xl); background-color: var(--color-bg); border-top: 1px solid var(--color-border); }
.property-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.property-card { background-color: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.property-card--custom { display: flex; align-items: center; }
.property-card__visual svg { width: 100%; height: auto; }
.property-card__body { padding: var(--space-lg); }
.property-card__body--custom { padding: var(--space-xl); display: flex; flex-direction: column; gap: var(--space-md); }
.property-card__tags { display: flex; gap: var(--space-xs); margin-bottom: var(--space-sm); flex-wrap: wrap; }
.property-card__tag { font-size: 0.6875rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: var(--radius-full); background-color: var(--color-bg-alt); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.property-card__tag--new { background-color: var(--color-primary); color: white; border-color: var(--color-primary); }
.property-card__name { font-family: var(--font-family-serif); font-size: 1rem; font-weight: 700; color: var(--color-text); margin-bottom: var(--space-xs); }
.property-card__spec { font-size: 0.8125rem; color: var(--color-text-muted); margin-bottom: var(--space-sm); }
.property-card__price { font-family: var(--font-family-serif); font-size: 1.5rem; font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-xs); }
.property-card__reno { font-size: 0.75rem; color: var(--color-secondary); line-height: 1.6; }

/* ---- Support Steps ---- */
.buy-section { padding-block: var(--space-3xl); background-color: var(--color-bg-alt); border-top: 1px solid var(--color-border); }
.support-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }
.support-step { background-color: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-xl); text-align: center; }
.support-step__num { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; background-color: var(--color-primary); color: white; border-radius: var(--radius-full); font-weight: 700; font-size: 1.125rem; margin-bottom: var(--space-md); }
.support-step__title { font-weight: 700; font-size: 0.9375rem; color: var(--color-text); margin-bottom: var(--space-sm); }
.support-step__desc { font-size: 0.8125rem; color: var(--color-text-muted); line-height: 1.7; }

/* ---- Sell ---- */
.sell-section { padding-block: var(--space-3xl); background-color: var(--color-bg); border-top: 1px solid var(--color-border); }
.sell-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); max-width: 800px; margin-inline: auto; }
.sell-card { background-color: var(--color-bg-alt); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-xl); display: flex; flex-direction: column; gap: var(--space-md); }
.sell-card--featured { background-color: var(--color-primary-light); border-color: var(--color-primary); }
.sell-card__title { font-family: var(--font-family-serif); font-size: 1.0625rem; font-weight: 700; color: var(--color-primary); }
.sell-card__desc { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.8; flex: 1; }

/* ---- Access ---- */
.access-section { padding-block: var(--space-3xl); background-color: var(--color-bg-alt); border-top: 1px solid var(--color-border); }
.access-inner { display: flex; flex-direction: column; gap: var(--space-xl); max-width: 720px; margin-inline: auto; }
.hours-table { width: 100%; border-collapse: collapse; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.hours-table th { background-color: var(--color-primary); color: white; padding: var(--space-sm); text-align: center; font-size: 0.875rem; }
.hours-table td { padding: var(--space-sm); text-align: center; border-bottom: 1px solid var(--color-border); font-size: 0.875rem; background-color: var(--color-bg-card); }
.hours-time { text-align: left !important; color: var(--color-text-muted); font-size: 0.8125rem !important; }
.hours-open { color: var(--color-primary); font-weight: 700; }
.hours-closed { color: #d0c0b0; }
.hours-note { font-size: 0.8125rem; color: var(--color-text-muted); }
.info-list { display: flex; flex-direction: column; }
.info-list__item { display: grid; grid-template-columns: 80px 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: 0.75rem; letter-spacing: 0.1em; font-weight: 700; color: var(--color-secondary); padding-top: 2px; }
.info-list__value { color: var(--color-text-muted); line-height: 1.7; font-size: 0.9375rem; }
.tel-link { color: var(--color-primary); font-weight: 700; font-size: 1.25rem; }
.tel-link:hover { text-decoration: underline; }

/* ---- Footer ---- */
.site-footer { background-color: var(--color-primary); 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__logo { font-family: var(--font-family-serif); font-size: 1.25rem; color: white; font-weight: 700; }
.footer__tagline { font-size: 0.8125rem; color: rgba(255,240,220,0.7); margin-top: var(--space-xs); }
.footer__nav-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer__nav-list a { font-size: 0.875rem; color: rgba(255,240,220,0.7); transition: color var(--transition-fast); }
.footer__nav-list a:hover { color: white; }
.footer__bottom { padding-block: var(--space-md); }
.footer__copy { font-size: 0.75rem; color: rgba(255,240,220,0.4); 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: rgba(253,250,246,0.98); padding: var(--space-md) var(--space-lg) var(--space-xl); border-bottom: 1px solid var(--color-border); z-index: 99; box-shadow: var(--shadow-md); }
  .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; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero__actions { flex-direction: column; }
  .concept-cards { grid-template-columns: 1fr; }
  .property-grid { grid-template-columns: 1fr; }
  .support-steps { grid-template-columns: 1fr 1fr; }
  .sell-grid { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; gap: var(--space-lg); }
}

@media (max-width: 480px) {
  .support-steps { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
  .info-list__item { grid-template-columns: 60px 1fr; }
}