/* 夥山工場 HuoShan Studio
   ─────────────────────────────────────────── */

:root {
  --c-bg:        #e6e6e6;   /* 在地 */
  --c-primary:   #cb5237;   /* 人文 */
  --c-accent:    #6f886b;   /* 自然 */
  --c-text:      #2b2b2b;
  --c-text-soft: #555;
  --c-muted:     #9b9b9b;
  --c-line:      #cb5237;

  --max-w: 1200px;
  --gap:   24px;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family:
    "Noto Sans TC",
    -apple-system, BlinkMacSystemFont,
    "Helvetica Neue", "PingFang TC", "Microsoft JhengHei",
    sans-serif;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.brand-font {
  font-family:
    "Noto Serif TC",
    "Songti TC", "PMingLiU", "MingLiU",
    serif;
}

/* ─── Header / Nav ─────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--c-bg);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 40px 26px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: transform 0.28s ease;
}

.site-header.is-hidden {
  transform: translateY(-110%);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-logo {
  width: 44px;
  height: auto;
  flex-shrink: 0;
}

.site-logo-img {
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}

/* 品牌文字（mobile 才顯示，桌機隱藏靠 nav 自身位置） */
.brand-mobile {
  display: none;
  flex-direction: column;
  line-height: 1.15;
}
.brand-mobile .zh { font-size: 15px; letter-spacing: 0.08em; color: var(--c-text); }
.brand-mobile .en { font-size: 10px; letter-spacing: 0.12em; color: var(--c-text-soft); }

/* ─── 漢堡按鈕（mobile-only） ─── */
.hamburger {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  position: relative;
  z-index: 110;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--c-text);
  margin: 6px auto;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.site-nav {
  margin-left: auto;
  display: flex;
  gap: 96px;
  font-size: 16px;
  letter-spacing: 0.04em;
}

.nav-item { position: relative; }

/* Active state ─ 未選: 灰；已選: 品牌紅 + 底線指示 */
.site-nav > .nav-item > a {
  position: relative;
  padding: 6px 2px;
  color: var(--c-muted);
  transition: color 0.18s;
  display: inline-block;
}

.site-nav > .nav-item > a:hover {
  color: var(--c-text-soft);
}

.site-nav > .nav-item > a.active {
  color: var(--c-primary);
}

.site-nav > .nav-item > a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--c-primary);
}

/* ─── Submenu（hover/focus 展開）── */
.nav-item.has-submenu > a::after {
  /* 子選單指示三角 */
  content: "";
  display: inline-block;
  width: 0; height: 0;
  margin-left: 6px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  vertical-align: middle;
  opacity: 0.6;
}
/* 主項已 active 時，::after 是底線；蓋掉三角避免衝突 */
.nav-item.has-submenu > a.active::after {
  width: auto; height: 2px;
  border: 0;
  background: var(--c-primary);
  margin: 0;
}

.nav-item .submenu {
  position: absolute;
  top: 100%;
  left: -16px;
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid #d4d4d4;
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  white-space: nowrap;
  font-size: 14px;

  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0s linear 0.16s;
  z-index: 20;
}

.nav-item.has-submenu:hover .submenu,
.nav-item.has-submenu:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

/* 補一條透明 hover bridge，讓滑鼠從主項滑到子選單時不會中斷 */
.nav-item.has-submenu .submenu::before {
  content: "";
  position: absolute;
  top: -10px; left: 0; right: 0;
  height: 10px;
}

.nav-item .submenu a {
  color: var(--c-text);
  padding: 2px 0;
  letter-spacing: 0.04em;
}
.nav-item .submenu a .en { color: var(--c-text-soft); }
.nav-item .submenu a:hover {
  color: var(--c-primary);
}
.nav-item .submenu a:hover .en {
  color: var(--c-primary);
}

/* ─── Layout containers ────────────────────── */

.page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px 80px;
}

.page-section-label {
  text-align: center;
  color: var(--c-accent);
  font-size: 18px;
  letter-spacing: 0.08em;
  margin: 48px 0 28px;
}

.page-section-label .en {
  display: block;
  font-size: 15px;
  margin-top: 4px;
}

.tagline {
  text-align: center;
  color: var(--c-text-soft);
  margin: 36px auto 48px;
  letter-spacing: 0.1em;
}

/* ─── Landing ──────────────────────────────── */

.landing {
  width: 100vw;
  min-height: 100vh;
  min-height: 100svh;
  position: relative;
  display: block;
  overflow: hidden;
  background: #000;
}

.landing-video {
  position: absolute;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  min-height: 100vh;
  min-height: 100svh;
  inset: 0;
  object-fit: cover;
  pointer-events: none;
}

.landing-enter {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
}

/* ─── Works grid ───────────────────────────── */

.works-section { scroll-margin-top: 32px; }

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px var(--gap);
  margin-bottom: 64px;
}

.work-item { display: block; }

.work-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #d4d4d4;
}

.work-caption {
  display: block;
  text-align: center;
  margin-top: 12px;
  font-size: 14px;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
}

/* ─── Work detail ──────────────────────────── */

.work-title {
  text-align: center;
  font-size: 26px;
  letter-spacing: 0.12em;
  margin: 32px 0 32px;
  font-weight: 500;
}

.work-body {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: left;     /* 內文與 meta 一律左對齊 */
}

.work-description {
  margin: 0 0 28px;
  color: var(--c-text);
  line-height: 1.9;
  white-space: pre-wrap;
}

.work-meta {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--c-text-soft);
  line-height: 1.9;
}
.work-meta li { margin: 0; }

.work-images {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  margin-top: 24px;
}
.work-image-item { width: 100%; max-width: 720px; }
.work-images img { width: 100%; display: block; }
.image-caption { text-align: center; font-size: 13px; color: var(--c-muted); margin: 6px 0 0; }

.lightbox-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}
.lightbox-trigger:hover img { opacity: 0.92; }

/* ─── Lightbox ─────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(20, 20, 20, 0.92);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 60px;
}
.lightbox.hidden { display: none; }

.lb-stage {
  max-width: 96vw;
  max-height: 92vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.lb-img {
  max-width: 100%;
  max-height: 86vh;
  object-fit: contain;
  cursor: zoom-out;
  user-select: none;
}
.lb-cap {
  color: #ddd;
  font-size: 13px;
  text-align: center;
}
.lb-counter {
  color: #999;
  font-size: 12px;
  letter-spacing: 0.1em;
}

.lightbox button {
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  font-family: inherit;
}
.lb-close {
  position: absolute;
  top: 18px; right: 22px;
  font-size: 32px;
  line-height: 1;
  opacity: 0.8;
}
.lb-close:hover { opacity: 1; }
.lb-prev, .lb-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 56px;
  line-height: 1;
  padding: 8px 16px;
  opacity: 0.6;
}
.lb-prev { left: 12px; }
.lb-next { right: 12px; }
.lb-prev:hover, .lb-next:hover { opacity: 1; }

@media (max-width: 600px) {
  .lightbox { padding: 16px 8px; }
  .lb-prev, .lb-next { font-size: 40px; padding: 6px 10px; }
  .lb-close { top: 10px; right: 12px; font-size: 28px; }
}

/* ─── About / Members grid ─────────────────── */

.about-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 5;
  background: linear-gradient(135deg, #c8c8c8, #b6b6b6);
  margin-bottom: 12px;
  overflow: hidden;
}
.about-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.about-cover .overlay-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
  background: rgba(0,0,0,0.18);
  letter-spacing: 0.1em;
}
.about-cover .overlay-label .zh { font-size: 22px; }
.about-cover .overlay-label .en { font-size: 14px; opacity: 0.92; margin-top: 2px; }

@media (max-width: 880px) {
  .about-cover { aspect-ratio: 16 / 9; }
  .about-cover .overlay-label .zh { font-size: 26px; }
  .about-cover .overlay-label .en { font-size: 16px; }
}

.members-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 60px;
  margin: 24px 0 64px;
  justify-items: center;
}

.member-item {
  display: block;
  text-align: center;
  cursor: pointer;
  position: relative;
  z-index: 1;
}
.member-item:hover .member-avatar { opacity: 0.9; }
.member-item:hover .member-name-zh { color: var(--c-primary); }
.member-avatar {
  width: 110px;
  height: 110px;
  border-radius: 8px;
  object-fit: cover;
  background: #cfcfcf;
  margin-bottom: 10px;
}
.member-name-zh { display: block; font-size: 14px; color: var(--c-text); }
.member-name-en { display: block; font-size: 12px; color: var(--c-muted); }

/* ─── Member detail ────────────────────────── */

.member-detail {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 40px;
}

/* 上：照片左 / 名字 + 社群右（名字垂直貼齊照片底部） */
.member-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: end;
}

.member-photo { width: 100%; }
.member-photo .member-avatar {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border-radius: 4px;
  object-fit: cover;
  background: #cfcfcf;
}

.member-id {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding-bottom: 4px;
}
.member-id .member-name-zh {
  font-size: 17px;
  font-weight: 500;
  color: var(--c-primary);
  letter-spacing: 0.06em;
}
.member-id .member-name-en {
  font-size: 13px;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
}
.member-id .social-row {
  margin-top: 14px;
  justify-content: flex-start;
}

/* bio */
.bio-block { margin-bottom: 22px; }
.bio-block:last-child { margin-bottom: 0; }
.bio-block-label { font-size: 14px; color: var(--c-text); font-weight: 500; margin: 0 0 4px; letter-spacing: 0.08em; }
.bio-block ul { margin: 0; padding: 0; list-style: none; }
.bio-block li { font-size: 14px; line-height: 1.9; color: var(--c-text-soft); }

/* 下：橫排 3 格（佔位） */
.member-works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.member-works-grid .placeholder {
  aspect-ratio: 1;
  border: 1px solid #b8b8b8;
}

/* 桌機略寬時，header 兩欄比例維持，但限制最大尺寸避免照片太大 */
@media (min-width: 881px) {
  .member-detail { max-width: 880px; margin-left: auto; margin-right: auto; }
  .member-header { grid-template-columns: 360px 1fr; }
  .member-photo .member-avatar { max-width: 360px; }
}

/* ─── Contact ──────────────────────────────── */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  margin-top: 64px;
  align-items: start;
}

.contact-left { text-align: center; }
.contact-left .site-logo { width: 90px; margin: 0 auto 18px; }
.contact-left .intro { color: var(--c-text-soft); margin: 0; }
.contact-left .email { color: var(--c-text); margin: 4px 0 18px; }
.contact-left .address {
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.8;
  margin: 0;
}

.social-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 22px;
}
.social-row a {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: var(--c-accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 600;
}

.contact-form .form-title {
  font-size: 18px;
  margin: 0 0 24px;
}

.contact-form label {
  display: block;
  margin: 18px 0 6px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 0;
  background: #fff;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  color: var(--c-text);
}

.contact-form textarea { min-height: 180px; resize: vertical; }

.contact-form button {
  margin-top: 22px;
  background: var(--c-primary);
  color: #fff;
  border: 0;
  padding: 12px 28px;
  font-size: 14px;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.contact-form button:hover { opacity: 0.9; }

/* ─── Footer ───────────────────────────────── */

.site-footer {
  border-top: 1px solid #ccc;
  margin-top: 64px;
  padding: 24px 40px;
  text-align: center;
  font-size: 12px;
  color: var(--c-muted);
}

.go-top {
  text-align: center;
  margin: 32px 0 8px;
  color: var(--c-muted);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.go-top a { color: inherit; }
.go-top a::before { content: "↑"; display: block; margin-bottom: 4px; }

/* ─── Loading state ────────────────────────── */
.loading {
  text-align: center;
  color: var(--c-muted);
  padding: 64px 0;
}

/* ─── Responsive ───────────────────────────── */
@media (max-width: 880px) {
  .site-header { padding: 16px 20px; gap: 12px; }
  .page { padding: 0 24px 64px; }

  .brand-mobile { display: flex; }
  .hamburger { display: block; }

  /* nav 預設關閉 → 全螢幕展開 */
  .site-nav {
    position: fixed;
    inset: 0;
    margin: 0;
    background: var(--c-bg);
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 28px;
    padding: 80px 40px 60px;
    font-size: 22px;
    letter-spacing: 0.08em;
    z-index: 100;

    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0.22s;
  }
  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  /* 每個 nav-item 內部都靠右排列（含主項與 submenu） */
  .site-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    width: 100%;
  }

  /* 主項變大、未選紅、目前頁仍底線 */
  .site-nav > .nav-item > a {
    color: var(--c-primary);
    padding: 8px 0;
  }
  .site-nav > .nav-item > a.active::after {
    height: 2px;
  }

  /* mobile 不用 hover 子選單，去掉三角；展開的 inline 子選單也不需要 */
  .nav-item.has-submenu > a::after { display: none; }
  .nav-item .submenu {
    position: static;
    background: transparent;
    border: 0;
    padding: 12px 0 0;
    margin: 0;
    align-items: flex-end;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
    font-size: 14px;
    gap: 8px;
  }
  .nav-item .submenu::before { display: none; }
  .nav-item .submenu a { color: var(--c-text-soft); }

  .works-grid { grid-template-columns: 1fr; gap: 28px; }
  .members-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }

  /* 成員細節頁 mobile：照片左 / 名字右 維持兩欄比例 */
  .member-header { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 18px; }
  .member-id .member-name-zh { font-size: 16px; }
  .member-works-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }

  .contact-wrap { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  /* about 維持兩欄（依設計圖 mobile 也是一列兩個） */
  .members-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .member-avatar { width: 100%; height: auto; aspect-ratio: 1; max-width: none; }
  .members-grid .member-name-zh { font-size: 15px; }
}