@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&display=swap');

:root {
  --bg: #111111;
  --bg-alt: #1c1c1c;
  --text: #f2f2f2;
  --text-soft: #9a9a9a;
  --border: #3a3a3a;
  --line-strong: #f2f2f2;
  --max-width: 1200px;
  --radius: 2px;
  --font-display: 'Oswald', 'Noto Sans TC', -apple-system, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Helvetica Neue", Arial, sans-serif;
}

/* 固定深色極簡風格（非 light/dark 切換，是設計本身） */
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-alt: #f2f2f2;
  --text: #111111;
  --text-soft: #666666;
  --border: #dcdcdc;
  --line-strong: #111111;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

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

a { color: var(--text); }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  padding: 18px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 14px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* 回首頁按鈕（除 index 外每頁左上固定一顆，header 本身是 sticky 所以永遠看得到） */
.back-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

.back-home:hover,
.back-home:focus-visible {
  background: var(--line-strong);
  color: var(--bg);
  outline: none;
}

.menu-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-display);
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  text-transform: uppercase;
  padding: 6px 4px;
}

.menu-toggle .bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle .bars span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
}

nav.main-nav {
  display: none;
  flex-direction: column;
  gap: 2px;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  min-width: 220px;
}

nav.main-nav.open { display: flex; }

nav.main-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.88rem;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

nav.main-nav a:last-child { border-bottom: none; }
nav.main-nav a:hover { background: var(--bg-alt); color: var(--text); }
nav.main-nav a.current {
  color: var(--text);
  font-weight: 600;
  position: relative;
}
nav.main-nav a.current::before {
  content: "\2014\a0"; /* — (em dash + nbsp) 標示目前所在頁 */
}

.header-inner { position: relative; }

/* Hero */
.hero {
  position: relative;
  padding: 72px 20px 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  overflow: hidden;
}

.hero-deco {
  position: absolute;
  top: 10px;
  right: 0;
  width: 260px;
  height: 260px;
  opacity: 0.5;
  pointer-events: none;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2.6rem, 9vw, 6rem);
  line-height: 0.98;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
  max-width: 900px;
  position: relative;
  z-index: 1;
}

.hero h1 .line-name { display: block; }
.hero h1 .line-sub { display: block; color: var(--text); }

.hero .rule-row {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.hero .rule-row .rule {
  flex: 0 0 60px;
  height: 1px;
  background: var(--text-soft);
}

.hero p.tagline {
  color: var(--text-soft);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0;
}

.placeholder {
  border-bottom: 1px dashed var(--text-soft);
  padding: 0 2px;
}

/* ---- 動畫（簡單淡入即可，尊重 prefers-reduced-motion：使用者關閉動畫時全部改成瞬間切換）---- */
@media (prefers-reduced-motion: no-preference) {
  .hero-anim {
    animation: hero-in 0.5s ease-out both;
  }
  @keyframes hero-in {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .grid-item {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.35s ease-out, transform 0.35s ease-out;
  }
  .grid-item.show {
    opacity: 1;
    transform: translateY(0);
  }

  .lb-img-swap {
    transition: opacity 0.18s ease-out;
  }
  .lb-img-swap.fading {
    opacity: 0;
  }

  .lightbox .lb-box {
    transition: opacity 0.22s ease-out, transform 0.22s ease-out;
    opacity: 0;
    transform: scale(0.96);
  }
  .lightbox.open .lb-box {
    opacity: 1;
    transform: scale(1);
  }
}

/* 首頁五分類入口 */
.category-entries {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  max-width: var(--max-width);
  margin: 40px auto 0;
}

.category-entries a {
  display: block;
  background: var(--bg);
  text-decoration: none;
  color: var(--text);
  padding: 34px 18px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.category-entries a:hover { background: var(--bg-alt); }

.category-entries .num {
  display: block;
  font-size: 0.7rem;
  color: var(--text-soft);
  margin-bottom: 8px;
  letter-spacing: 0.15em;
}

/* Section */
section.gallery-section {
  padding: 48px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

section.gallery-section h2 {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 1.6rem;
  letter-spacing: 0.05em;
  margin: 0 0 8px;
}

.section-desc {
  color: var(--text-soft);
  margin: 0 0 22px;
  font-size: 0.95rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.tab-btn {
  background: none;
  border: 1px solid var(--text-soft);
  color: var(--text-soft);
  padding: 7px 16px;
  border-radius: 999px;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.78rem;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Confidential banner */
.confidential-banner {
  background: var(--bg-alt);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  color: var(--text);
}

/* 網格／3D 輪播 切換控制（gallery-block 包住一組 grid-view + coverflow-view） */
.gallery-block { margin-bottom: 8px; }

.view-toggle {
  display: inline-flex;
  border: 1px solid var(--text-soft);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 18px;
}

.view-toggle-btn {
  background: none;
  border: none;
  color: var(--text-soft);
  padding: 10px 18px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.78rem;
  cursor: pointer;
}

.view-toggle-btn + .view-toggle-btn { border-left: 1px solid var(--text-soft); }

.view-toggle-btn.active {
  background: var(--text);
  color: var(--bg);
}

/* 預設隱藏兩種視圖，由 html[data-gallery-view] 決定顯示哪一種（JS 讀 localStorage 套用，見 main.js） */
.gallery-block .grid-view,
.gallery-block .coverflow-view { display: none; }

html:not([data-gallery-view="coverflow"]) .gallery-block .grid-view { display: grid; }
html[data-gallery-view="coverflow"] .gallery-block .coverflow-view { display: block; }

/* Grid — 作品圖保留原色，不套灰階濾鏡 */
.grid-view {
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.grid-item {
  cursor: pointer;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  transition: transform 0.15s ease;
}

.grid-item:hover { transform: translateY(-2px); }

.grid-item img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--border);
}

.grid-item .cap {
  font-size: 0.78rem;
  color: var(--text-soft);
  padding: 6px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Coverflow 作品輪播（Swiper，取代舊格線，js/main.js renderCoverflow 產生內容） */
.coverflow-swiper {
  width: 100%;
  padding: 30px 0 56px;
}

.coverflow-swiper .swiper-slide {
  width: 70vw;
  max-width: 300px;
  height: 380px;
  display: flex;
  flex-direction: column;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
}

.coverflow-swiper .swiper-slide img {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  object-fit: contain;
  background: #000;
}

.coverflow-swiper .swiper-slide .cap {
  flex: 0 0 auto;
  font-size: 0.78rem;
  color: var(--text-soft);
  padding: 8px 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.coverflow-swiper .swiper-slide-active .cap { color: var(--text); }

.coverflow-swiper .swiper-button-prev,
.coverflow-swiper .swiper-button-next {
  --swiper-navigation-size: 18px;
  top: 50%;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--text);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
}

.coverflow-swiper .swiper-button-prev { left: 2px; }
.coverflow-swiper .swiper-button-next { right: 2px; }
.coverflow-swiper .swiper-button-disabled { opacity: 0.25; }

@media (min-width: 700px) {
  .coverflow-swiper .swiper-slide { width: 300px; height: 400px; }
}

/* About page */
.about-layout {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.avatar-placeholder {
  width: 160px;
  height: 160px;
  flex-shrink: 0;
  border: 1px dashed var(--text-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
  font-size: 0.8rem;
  text-align: center;
  background: var(--bg-alt);
}

.resume {
  flex: 1;
  min-width: 240px;
}

.resume-block {
  margin-bottom: 22px;
}

.resume-block h3 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}

.resume-block .field {
  padding: 3px 0;
  font-size: 0.95rem;
}

.resume-block .field .tag {
  color: var(--text-soft);
  margin-right: 6px;
}

/* Lightbox（Swiper + Zoom module：手機雙指/雙擊縮放，桌機雙擊/滾輪縮放，見 js/main.js） */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  flex-direction: column;
  padding: 20px;
}

.lightbox.open { display: flex; }

.lb-swiper {
  width: 100%;
  max-width: 1100px;
  height: 78vh;
}

.lb-swiper .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
}

.lb-swiper .swiper-zoom-container img {
  max-width: 100%;
  max-height: 78vh;
  border-radius: 2px;
  touch-action: none; /* 讓 Swiper Zoom 接管手勢 */
}

.lightbox .lb-caption {
  color: #eee;
  margin-top: 12px;
  font-size: 0.9rem;
  text-align: center;
  flex: 0 0 auto;
}

.lightbox .lb-close {
  position: absolute;
  top: 16px;
  right: 20px;
  color: #fff;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  z-index: 201;
  min-width: 44px;
  min-height: 44px;
}

.lb-swiper .swiper-button-prev,
.lb-swiper .swiper-button-next {
  --swiper-navigation-size: 22px;
  color: #fff;
  background: rgba(255,255,255,0.12);
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.lb-swiper .swiper-button-prev { left: 4px; }
.lb-swiper .swiper-button-next { right: 4px; }
.lb-swiper .swiper-button-disabled { opacity: 0.25; }

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 20px 60px;
  margin-top: 24px;
  color: var(--text-soft);
  font-size: 0.85rem;
}

footer.site-footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Mobile */
@media (max-width: 480px) {
  .grid-view { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .grid-item img { height: 120px; }
  nav.main-nav { left: 0; right: 0; min-width: 0; }
  .lb-swiper .swiper-button-prev,
  .lb-swiper .swiper-button-next { width: 40px; height: 40px; }
  .lb-swiper .swiper-button-prev { left: 0; }
  .lb-swiper .swiper-button-next { right: 0; }
  .about-layout { flex-direction: column; align-items: center; text-align: center; }
  .hero-deco { width: 140px; height: 140px; opacity: 0.35; }
  .contact-buttons { justify-content: center; }
  .back-home { padding: 0 10px; font-size: 0.7rem; }
  .brand { font-size: 0.88rem; }
  .coverflow-swiper .swiper-button-prev,
  .coverflow-swiper .swiper-button-next { width: 34px; height: 34px; --swiper-navigation-size: 14px; }
}

/* Contact link buttons（黑白極簡，About 頁 + 頁尾共用） */
.contact-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 4px;
  padding: 0;
  list-style: none;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 9px 16px;
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.contact-btn:hover,
.contact-btn:focus-visible {
  background: var(--line-strong);
  color: var(--bg);
  outline: none;
}

.contact-btn:focus-visible {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--line-strong);
}

/* 實心強調版（播放簡報等主要動作用） */
.contact-btn-primary {
  background: var(--line-strong);
  color: var(--bg);
}

.contact-btn-primary:hover,
.contact-btn-primary:focus-visible {
  background: transparent;
  color: var(--text);
}

.contact-btn[data-todo]::after {
  content: "待填";
  margin-left: 4px;
  font-size: 0.68rem;
  color: var(--text-soft);
  letter-spacing: 0.04em;
}

.contact-btn:hover[data-todo]::after,
.contact-btn:focus-visible[data-todo]::after {
  color: var(--bg-alt);
}

.contact-btn.contact-email {
  display: none; /* email 尚未提供，先隱藏，待填後移除此行即可顯示 */
}

footer.site-footer .contact-buttons {
  margin-top: 4px;
}