:root {
  --color-bg: #faf9f7;
  --color-text: #1a1a1a;
  /* Warm body text for service / contact (harmonizes with header #b4978f) */
  --color-text-warm: #3d3029;
  --color-text-warm-muted: #5c4d45;
  --color-muted: #666;
  --color-border: #e8e4df;
  /* Sampled from assets/logo.jpg (dusty rose field behind mark) */
  --color-header-bg: #b4978f;
  --color-header-text: #faf9f7;
  --color-header-border: rgba(255, 255, 255, 0.2);
  --header-height: 96px;
  --logo-max-height: clamp(3rem, 9vh, 5.75rem);
  --logo-max-width: clamp(6.5rem, 16vw, 13rem);
  --max-width: 1400px;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Heiti TC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 0.5rem 1rem;
  background: #fff;
}

.skip-link:focus {
  left: 0;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  color: var(--color-header-text);
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  transform: translateY(0);
  transition: transform 0.28s ease;
  will-change: transform;
}

.site-header.is-scroll-hidden {
  transform: translateY(-100%);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: max(0.3rem, 0.55vw) 3.5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.75rem, 2vw, 2rem);
  min-width: 0;
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.35rem, 1vw, 1.25rem);
  min-width: 0;
  flex: 1 1 auto;
}

.logo {
  flex: 0 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  line-height: 0;
}

.logo img {
  width: auto;
  height: auto;
  max-height: var(--logo-max-height);
  max-width: var(--logo-max-width);
  object-fit: contain;
}

.nav-desktop {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: nowrap;
  flex: 1 1 auto;
  min-width: 0;
  gap: clamp(0.45rem, 1.1vw, 2rem);
}

.nav-desktop > a {
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-desktop a {
  font-size: clamp(0.72rem, 0.62rem + 0.35vw, 0.98rem);
  letter-spacing: clamp(0.04em, 0.02em + 0.12vw, 0.08em);
  transition: opacity 0.2s;
}

.nav-desktop .social-icons {
  flex-shrink: 0;
}

.nav-desktop a:hover {
  opacity: 0.78;
}

.nav-desktop a[aria-current="page"] {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 0.3em;
  text-decoration-thickness: 1px;
}

.social-icons {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.social-icons a {
  display: flex;
  opacity: 0.85;
  transition: opacity 0.2s;
}

.social-icons a:hover {
  opacity: 0.5;
}

.social-icons svg {
  width: 22px;
  height: 22px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.3rem;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-header-text);
  margin: 5px 0;
  transition: transform 0.2s, opacity 0.2s;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 1rem 4vw 1.5rem;
  border-top: 1px solid var(--color-header-border);
  gap: 0.75rem;
}

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

.nav-mobile > a {
  font-size: clamp(0.98rem, 2.85vw, 1.1rem);
  letter-spacing: 0.06em;
}

.nav-mobile-social {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-header-border);
}

.nav-mobile-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  letter-spacing: 0.06em;
  padding: 0.4rem 0;
}

.nav-mobile-social-link svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  opacity: 0.88;
}

.nav-mobile-social-link:hover {
  opacity: 0.65;
}

/* Full-screen dim when mobile menu is open (below header z-index) */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99;
  margin: 0;
  padding: 0;
  border: none;
  cursor: pointer;
  background: rgba(42, 42, 42, 0.48);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

.mobile-nav-backdrop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

@media (min-width: 1025px) {
  .mobile-nav-backdrop {
    display: none !important;
  }
}

/* Desktop header: scale down before switching to mobile menu */
@media (max-width: 1280px) {
  :root {
    --logo-max-width: clamp(6rem, 14vw, 11rem);
    --logo-max-height: clamp(2.85rem, 8vh, 5.25rem);
  }

  .nav-desktop {
    gap: clamp(0.4rem, 0.9vw, 1.15rem);
  }

  .nav-desktop a {
    font-size: clamp(0.68rem, 0.58rem + 0.28vw, 0.88rem);
  }
}

@media (max-width: 1120px) {
  .nav-desktop .social-icons {
    display: none;
  }
}

/* Gallery pages: offset for fixed header (SEO intro is visually hidden) */
.site-header + main:not(.page-content) {
  padding-top: var(--header-height);
}

/* Gallery */
.gallery-section {
  padding: 0 4vw 4vw;
  max-width: var(--max-width);
  margin: 0 auto;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 4px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  cursor: zoom-in;
  background: #eee;
  margin: 0;
  padding: 0;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.03);
}

/* Content pages */
.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: calc(3rem + var(--header-height)) 4vw 5rem;
}

.page-content h1 {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  text-align: center;
  margin: 0 0 0.5rem;
  letter-spacing: 0.06em;
}

.page-content .subtitle {
  text-align: center;
  font-size: 1.15rem;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
}

.page-content p {
  margin: 0 0 1.25rem;
}

.page-content ul {
  margin: 0 0 1.25rem;
  padding-left: 1.5rem;
  text-align: left;
}

.page-content strong {
  font-weight: 600;
}

.page-content > .page-content-cta {
  text-align: center;
  margin: 2.5rem 0 1.25rem;
}

.page-content > .page-content-cta .qr-wrap {
  margin: 0 auto 1.25rem;
}

.page-content--warm {
  color: var(--color-text-warm);
}

.page-content--warm h1 {
  color: var(--color-text-warm);
}

.page-content--warm .subtitle {
  color: var(--color-text-warm-muted);
}

.page-content--warm .contact-email {
  color: var(--color-text-warm-muted);
}

.page-content--warm .contact-email a {
  color: var(--color-text-warm);
}

.page-content--warm .btn:not(.btn-line) {
  border-color: var(--color-text-warm);
  color: var(--color-text-warm);
}

.page-content--warm .btn:not(.btn-line):hover {
  background: var(--color-text-warm);
  color: var(--color-bg);
}

.service-block {
  margin-bottom: 2rem;
}

.page-content .page-video {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0 0 2rem;
  margin-inline: 0;
  padding: 0;
}

.page-video-embed {
  position: relative;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  background: #1a1a1a;
  border: 1px solid var(--color-border);
}

.page-video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.page-video-caption {
  margin-top: 0.65rem;
  font-size: 0.9rem;
  color: var(--color-text-warm-muted);
  text-align: center;
}

.page-video-link {
  display: block;
  margin-top: 0.35rem;
  color: var(--color-text-warm);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.page-video-link:hover {
  opacity: 0.85;
}

.qr-wrap {
  margin: 2rem auto;
  max-width: 220px;
}

.qr-wrap img {
  margin: 0 auto;
  border: 1px solid var(--color-border);
}

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border: 1px solid var(--color-text);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  transition: background 0.2s, color 0.2s;
  margin: 0.5rem;
}

.btn:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-line {
  background: #06c755;
  border-color: #06c755;
  color: #fff;
}

.btn-line:hover {
  background: #05a847;
  border-color: #05a847;
  color: #fff;
}

.contact-email {
  margin-top: 2rem;
  color: var(--color-muted);
}

.contact-email a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 2.5rem 4vw 3rem;
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.footer-line {
  margin-top: 1.25rem;
}

/* SEO copy: in HTML for crawlers, not shown on screen */
.seo-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
  touch-action: none;
}

.lightbox img {
  max-width: min(95vw, 1200px);
  max-height: 90vh;
  object-fit: contain;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 1rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
}

.lightbox-close {
  top: 0.5rem;
  right: 0.5rem;
  font-size: 2rem;
  line-height: 1;
}

.lightbox-prev {
  left: 0.5rem;
  font-size: 2.5rem;
}

.lightbox-next {
  right: 0.5rem;
  font-size: 2.5rem;
}

.loading {
  text-align: center;
  padding: 4rem;
  color: var(--color-muted);
}

/* Full-bleed grid: gutter matches gap between images */
.gallery-section--fullbleed {
  --gallery-gutter: 8px;
  max-width: none;
  margin: 0;
  padding: var(--gallery-gutter);
}

.gallery-section--fullbleed.is-gallery-loading {
  position: relative;
  min-height: min(70vh, 560px);
}

.gallery-page-loader {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  background: var(--color-bg);
  color: var(--color-text-warm, var(--color-muted));
}

.gallery-section--fullbleed.is-gallery-loading .gallery-page-loader {
  opacity: 1;
}

.gallery-section--fullbleed:not(.is-gallery-loading) .gallery-page-loader {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0s linear 0.25s;
}

.gallery-page-loader-text {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.gallery-page-loader-spinner {
  width: 2.25rem;
  height: 2.25rem;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-header-bg);
  border-radius: 50%;
  animation: gallery-page-spin 0.75s linear infinite;
}

@keyframes gallery-page-spin {
  to {
    transform: rotate(360deg);
  }
}

.gallery-section--fullbleed.is-gallery-loading #gallery {
  opacity: 0;
  pointer-events: none;
}

.gallery-section--fullbleed:not(.is-gallery-loading) #gallery {
  opacity: 1;
  transition: opacity 0.4s ease;
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition: none;
    will-change: auto;
  }

  .gallery-page-loader-spinner {
    animation: none;
    border-top-color: var(--color-border);
    opacity: 0.85;
  }

  .gallery-section--fullbleed:not(.is-gallery-loading) #gallery {
    transition: none;
  }

  .gallery-section--fullbleed:not(.is-gallery-loading) .gallery-page-loader {
    transition: none;
  }
}

.gallery-grid--dense {
  padding: 0;
}

.gallery-grid--dense.masonry-ready.masonry-two {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--gallery-gutter);
}

.gallery-grid--dense.masonry-ready:not(.masonry-two) {
  display: flex;
  flex-direction: column;
  gap: var(--gallery-gutter);
}

.gallery-grid--dense .masonry-col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--gallery-gutter);
}

@media (max-width: 480px) {
  .gallery-grid--dense.masonry-two .masonry-col {
    flex: none;
    width: 100%;
  }
}

.gallery-grid--dense .gallery-item {
  aspect-ratio: auto;
  height: auto;
  align-self: stretch;
}

.gallery-grid--dense .gallery-item img {
  width: 100%;
  height: auto;
  max-height: none;
  display: block;
}

.gallery-grid--dense .gallery-item:hover img {
  transform: none;
}

.gallery-grid--dense .gallery-item::after {
  content: "看大圖";
  pointer-events: none;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 10%;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: none;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
  background: linear-gradient(transparent 50%, rgba(0, 0, 0, 0.38));
  opacity: 0;
  transition: opacity 0.22s ease;
}

.gallery-grid--dense .gallery-item:hover::after {
  opacity: 1;
}

@media (max-width: 1024px) {
  :root {
    --logo-max-width: min(62vw, 16rem);
    --logo-max-height: clamp(3rem, 13vw, 4.75rem);
  }

  .header-inner {
    padding: max(0.5rem, 1.35vw) clamp(3vw, 4vw, 3.5vw);
    min-height: 4.75rem;
    display: grid;
    grid-template-columns: minmax(2.75rem, 1fr) auto minmax(2.75rem, 1fr);
    align-items: center;
    gap: 0;
    justify-content: stretch;
  }

  .header-inner .logo {
    grid-column: 2;
    justify-self: center;
    flex: initial;
    max-width: 100%;
  }

  .header-inner .header-tools {
    grid-column: 3;
    justify-self: end;
    flex: initial;
    min-width: 0;
  }

  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header-inner .social-icons {
    display: none;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
  }
}

@media (max-width: 480px) {
  :root {
    --logo-max-width: min(58vw, 13rem);
    --logo-max-height: clamp(2.85rem, 14vw, 4.25rem);
  }

  .header-inner {
    min-height: 4.5rem;
    padding-top: max(0.55rem, 1.5vw);
    padding-bottom: max(0.55rem, 1.5vw);
    padding-left: 4vw;
    padding-right: 4vw;
  }

  .menu-toggle span {
    width: 20px;
  }
}

@media (min-width: 1400px) {
  :root {
    --logo-max-width: clamp(9rem, 12vw, 15rem);
    --logo-max-height: 6rem;
  }
}