/* ===========================================================
   layout.css — 全站容器、header、footer、section
   =========================================================== */

/* —— 容器 —— */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding: clamp(64px, 10vw, 112px) 0;
}

.section--cream { background: var(--paper-cream); }
.section--warm  { background: linear-gradient(180deg, #fff6d8 0%, #ffffff 100%); }
.section--red   {
  background: linear-gradient(135deg, var(--kagyu-red-deep), var(--kagyu-red) 62%, #d85b34);
  color: var(--paper-cream);
}
.section--red h1, .section--red h2, .section--red h3 { color: #fff; }
.section--red .eyebrow { color: var(--kagyu-yellow); }
.section--red p { color: rgba(255, 255, 255, 0.86); }

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading--split {
  max-width: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 44px;
}

.section-heading--split > p {
  max-width: 520px;
  color: var(--muted);
}

.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }

/* ===========================================================
   HEADER
   =========================================================== */
.site-header {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: background 220ms var(--ease), box-shadow 220ms var(--ease);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 36px rgba(107, 44, 16, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: inherit;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: #251510;
  background: linear-gradient(135deg, var(--kagyu-yellow), var(--kagyu-red));
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand-text strong,
.brand-text small {
  display: block;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 1rem;
  font-weight: 700;
}

.brand-text small {
  font-family: var(--font-en);
  color: currentColor;
  opacity: 0.72;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

/* —— 主選單 + 多層下拉 —— */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: background 180ms var(--ease);
}

.nav-item::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 6px;
  height: 2px;
  border-radius: 2px;
  background: var(--kagyu-yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--ease);
}

.nav-item:hover { background: rgba(245, 197, 24, 0.16); color: var(--kagyu-red); }
.nav-item:hover::after { transform: scaleX(1); }

.site-nav a[aria-current="page"] {
  color: var(--kagyu-red);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

.nav-item.has-sub::after { display: none; }
.nav-item.has-sub > .caret {
  margin-left: 6px;
  font-size: 0.7rem;
  transition: transform 220ms var(--ease);
}
.nav-item.has-sub:hover > .caret { transform: rotate(180deg); }

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  margin-top: 6px;
  padding: 8px;
  display: none;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  backdrop-filter: blur(20px);
}

.nav-item:hover > .submenu,
.nav-item:focus-within > .submenu { display: block; }

.submenu a {
  display: block;
  padding: 10px 14px;
  border-radius: calc(var(--radius) - 4px);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
}

.submenu a:hover {
  background: rgba(245, 197, 24, 0.2);
  color: var(--kagyu-red);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: rgba(178, 31, 53, 0.08);
  color: currentColor;
  cursor: pointer;
}

.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: currentColor;
  transition: transform 220ms var(--ease), opacity 180ms var(--ease);
}

.menu-toggle::before { box-shadow: 0 -7px 0 currentColor; transform: translateY(7px); }
.menu-toggle::after { transform: translateY(-3px); }
.menu-toggle.is-open::before { transform: rotate(45deg); box-shadow: none; }
.menu-toggle.is-open::after  { transform: translateY(-2px) rotate(-45deg); }

/* ===========================================================
   PAGE MAIN
   =========================================================== */
.page-main { padding-top: 110px; }

.page-hero {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  padding: clamp(48px, 7vw, 96px) 0 clamp(32px, 5vw, 72px);
  background: linear-gradient(135deg, #ffffff, #fff4c8);
}

.page-hero img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
}

.page-hero img.fit-contain {
  object-fit: contain;
  background: #fff6d8;
}

.page-hero h1 {
  margin-bottom: 18px;
  color: var(--kagyu-red-deep);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
}

.page-hero p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.page-section {
  padding: clamp(56px, 8vw, 96px) 0;
}

.page-section:nth-of-type(even):not(.section--warm):not(.section--red) {
  background: rgba(255, 255, 255, 0.55);
}

/* —— 雙欄 —— */
.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
}

/* ===========================================================
   FOOTER
   =========================================================== */
.site-footer {
  padding: clamp(48px, 7vw, 88px) 0 32px;
  color: rgba(255, 253, 248, 0.86);
  background: linear-gradient(180deg, var(--kagyu-red-deep), #4a0d10);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand {
  display: grid;
  gap: 14px;
}

.footer-brand .brand-mark { background: rgba(255, 255, 255, 0.94); }

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 380px;
}

.footer-col h4 {
  margin: 0 0 16px;
  color: var(--kagyu-yellow);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.86);
  font-family: var(--font-sans);
  font-size: 0.96rem;
  font-weight: 500;
}

.footer-col a:hover { color: var(--kagyu-yellow); }

.footer-social {
  display: flex;
  gap: 10px;
}

.social-link {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.04);
  transition: background 200ms var(--ease), color 200ms var(--ease), transform 200ms var(--ease);
}

.social-link:hover {
  color: var(--kagyu-red-deep);
  background: var(--kagyu-yellow);
  transform: translateY(-2px);
}

.social-link svg { width: 20px; height: 20px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 28px;
  font-family: var(--font-sans);
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a { color: var(--kagyu-yellow-soft); }
.footer-bottom a:hover { color: var(--kagyu-yellow); }

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 980px) {
  .site-header {
    flex-wrap: wrap;
    padding: 10px 12px;
  }

  .menu-toggle { display: block; }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
  }

  .site-nav.is-open { display: flex; }

  .nav-item { width: 100%; padding: 14px; min-height: 48px; }
  .nav-item::after { display: none; }

  .submenu {
    position: static;
    margin: 0 -4px 4px;
    padding: 4px 0 4px 14px;
    border: 0;
    background: rgba(245, 197, 24, 0.08);
    box-shadow: none;
    display: block;
  }

  .page-main { padding-top: 96px; }

  .page-hero,
  .two-column,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-grid { gap: 32px; }
}

@media (max-width: 560px) {
  .brand-text small { display: none; }
  h1 { font-size: 2.35rem; }
}