/* ============================================================
   BAUHAUS PORTFOLIO — web.2i.com.tw
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=IBM+Plex+Mono:wght@400;500;700&family=Noto+Sans+TC:wght@400;700;900&display=swap');

:root {
  --black:  #0A0A0A;
  --white:  #F5F5F0;
  --red:    #D62B1F;
  --blue:   #1A4FD6;
  --yellow: #F5C400;
  --gray:   #EBEBEB;
  --mid:    #6B6B6B;
  --font-display: 'Bebas Neue', 'Arial Narrow', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;
  --font-body:    'Noto Sans TC', sans-serif;
  --border: 2px solid var(--black);
  --border-thick: 4px solid var(--black);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--white); color: var(--black); overflow-x: hidden; cursor: crosshair; }
a { text-decoration: none; color: inherit; }
img { display: block; }
button, a { cursor: crosshair; }

/* HEADER */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 200; background: var(--black); border-bottom: 4px solid var(--yellow); }
.header-inner { max-width: 1440px; margin: 0 auto; padding: 0 2rem; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; }
.logo-img { height: 30px; width: auto; object-fit: contain; filter: brightness(0) invert(1); }
.main-nav { display: flex; align-items: stretch; gap: 0; }
.main-nav a { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.55); padding: 0 1.4rem; height: 60px; display: flex; align-items: center; border-left: 1px solid rgba(255,255,255,0.1); transition: color 0.2s, background 0.2s; }
.main-nav a:hover { color: var(--black); background: var(--yellow); }
.main-nav .nav-contact, .main-nav .nav-back { color: var(--white); background: var(--red); border-left-color: var(--red); }
.main-nav .nav-contact:hover, .main-nav .nav-back:hover { background: var(--yellow); color: var(--black); }

/* HERO */
.hero { min-height: 100svh; padding-top: 60px; display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; }
.hero-left { background: var(--black); padding: 80px 60px 60px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; border-right: var(--border-thick); }
.hero-left-geo { position: absolute; bottom: -60px; left: -60px; width: 280px; height: 280px; border-radius: 50%; border: 40px solid var(--red); opacity: 0.5; pointer-events: none; }
.hero-left-geo2 { position: absolute; top: 120px; right: -20px; width: 90px; height: 90px; background: var(--yellow); opacity: 0.6; transform: rotate(45deg); pointer-events: none; }
.hero-eyebrow { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--yellow); margin-bottom: 2rem; opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.1s; }
.hero-title { font-family: var(--font-display); font-size: clamp(4rem, 7vw, 8rem); line-height: 0.92; letter-spacing: 0.02em; color: var(--white); position: relative; z-index: 1; }
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line span { display: block; transform: translateY(110%); animation: slideUp 0.8s var(--ease) forwards; }
.hero-title .line:nth-child(1) span { animation-delay: 0.2s; }
.hero-title .line:nth-child(2) span { animation-delay: 0.35s; color: var(--red); }
.hero-title .line:nth-child(3) span { animation-delay: 0.5s; }
.hero-stats { display: flex; gap: 0; margin-top: 3rem; position: relative; z-index: 1; opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.8s; }
.hero-stat { flex: 1; padding: 1.2rem 1.4rem; border: 1px solid rgba(255,255,255,0.12); border-right: none; }
.hero-stat:last-child { border-right: 1px solid rgba(255,255,255,0.12); }
.stat-num { font-family: Arial, sans-serif; font-size: 2.4rem; line-height: 1; color: var(--white); display: block; }
.stat-label { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.4); display: block; margin-top: 4px; }
.hero-right { background: var(--white); position: relative; display: flex; flex-direction: column; padding: 80px 60px 60px; overflow: hidden; }
.hero-right-stripe { position: absolute; top: 0; right: 0; width: 28%; height: 100%; background: var(--yellow); transform-origin: top; transform: scaleY(0); animation: stripeDown 0.9s var(--ease) forwards 0.15s; pointer-events: none; }
.hero-right-geo { position: absolute; bottom: 60px; left: 60px; width: 160px; height: 160px; border-radius: 50%; background: var(--blue); opacity: 0; animation: bauFadeIn 0.6s ease forwards 1s; pointer-events: none; }
.hero-right-geo2 { position: absolute; top: 80px; right: calc(28% + 40px); width: 0; height: 0; border-left: 45px solid transparent; border-right: 45px solid transparent; border-bottom: 78px solid var(--red); opacity: 0; animation: bauFadeIn 0.6s ease forwards 1.1s; pointer-events: none; }
.hero-desc { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.9; color: var(--black); max-width: 340px; position: relative; z-index: 1; margin-top: auto; padding-top: 2rem; border-top: var(--border-thick); opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.9s; }
.hero-scroll { position: absolute; bottom: 2rem; right: calc(28% + 2rem); display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--mid); writing-mode: vertical-lr; opacity: 0; animation: bauFadeIn 1s ease forwards 1.4s; }
.hero-scroll-line { width: 1px; height: 50px; background: linear-gradient(to bottom, var(--black), transparent); animation: scrollPulse 2s ease-in-out infinite 2s; }

/* FILTER */
.filter-section { background: var(--black); border-bottom: 4px solid var(--yellow); position: sticky; top: 60px; z-index: 100; }
.filter-bar { max-width: 1440px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: stretch; gap: 0; overflow-x: auto; scrollbar-width: none; }
.filter-bar::-webkit-scrollbar { display: none; }
.filter-label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.3); padding: 0 1.5rem 0 0; display: flex; align-items: center; white-space: nowrap; border-right: 1px solid rgba(255,255,255,0.1); flex-shrink: 0; }
.filter-btn { font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.5); background: transparent; border: none; border-right: 1px solid rgba(255,255,255,0.1); padding: 0 1.4rem; height: 48px; white-space: nowrap; transition: color 0.2s, background 0.2s; position: relative; }
.filter-btn::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--yellow); transform: scaleX(0); transition: transform 0.25s var(--ease); }
.filter-btn:hover { color: var(--white); }
.filter-btn:hover::after { transform: scaleX(1); }
.filter-btn.active { color: var(--black); background: var(--yellow); }
.filter-btn.active::after { display: none; }

/* WORKS GRID */
.works-section { padding: 0 0 120px; }
.works-grid { max-width: 1440px; margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-left: var(--border-thick); border-right: var(--border-thick); }
.work-card { border-right: var(--border); border-bottom: var(--border); position: relative; overflow: hidden; background: var(--white); opacity: 0; transform: translateY(20px); transition: opacity 0.5s var(--ease), transform 0.5s var(--ease); }
.work-card:nth-child(3n) { border-right: none; }
.work-card.visible { opacity: 1; transform: translateY(0); }
.work-card.hidden { display: none; }
.work-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease); z-index: 2; }
.work-card:nth-child(3n+1)::before { background: var(--red); }
.work-card:nth-child(3n+2)::before { background: var(--blue); }
.work-card:nth-child(3n+3)::before { background: var(--yellow); }
.work-card:hover::before { transform: scaleX(1); }
.card-link { display: block; }
.card-thumb { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--gray); }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; transition: transform 0.6s var(--ease), filter 0.4s ease; filter: grayscale(15%); }
.work-card:hover .card-thumb img { transform: scale(1.06); filter: grayscale(0%); }
.card-thumb.thumb-error { display: flex; align-items: center; justify-content: center; }
.card-thumb.thumb-error::after { content: attr(data-domain); font-family: var(--font-display); font-size: 1.2rem; color: var(--mid); }
.card-overlay { position: absolute; inset: 0; background: var(--black); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.35s ease; }
.work-card:hover .card-overlay { opacity: 0.85; }
.visit-btn { font-family: var(--font-display); font-size: 1.1rem; letter-spacing: 0.2em; color: var(--white); padding: 12px 28px; border: 2px solid var(--yellow); transform: translateY(10px); transition: transform 0.35s var(--ease), background 0.2s, color 0.2s; }
.work-card:hover .visit-btn { transform: translateY(0); }
.card-info { padding: 1.4rem 1.6rem 1.8rem; border-top: var(--border); position: relative; }
.card-number { position: absolute; top: 0.6rem; right: 1.2rem; font-family: var(--font-display); font-size: 3rem; line-height: 1; pointer-events: none; }
.work-card:nth-child(3n+1) .card-number { color: rgba(214,43,31,0.07); }
.work-card:nth-child(3n+2) .card-number { color: rgba(26,79,214,0.07); }
.work-card:nth-child(3n+3) .card-number { color: rgba(245,196,0,0.15); }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 10px; }
.tag { font-family: var(--font-mono); font-size: 0.6rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--white); background: var(--black); padding: 3px 8px; }
.card-title { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: 0.04em; line-height: 1.25; color: var(--black); margin-bottom: 6px; }
.card-url { font-family: var(--font-mono); font-size: 0.65rem; color: var(--mid); letter-spacing: 0.04em; }
.empty-state { text-align: center; padding: 80px 2rem; font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.1em; color: var(--mid); text-transform: uppercase; }

/* FOOTER */
.site-footer { background: var(--black); border-top: 4px solid var(--red); }
.footer-inner { max-width: 1440px; margin: 0 auto; padding: 60px 2rem; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 3rem; }
.footer-logo .logo-img { height: 32px; filter: brightness(0) invert(1); }
.footer-contact { display: flex; flex-direction: column; gap: 6px; }
.contact-name { font-family: var(--font-display); font-size: 1.6rem; letter-spacing: 0.08em; color: var(--white); }
.footer-contact-row { display: flex; align-items: center; gap: 16px; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: rgba(255,255,255,0.4); }
.footer-contact-row a { color: rgba(255,255,255,0.55); transition: color 0.2s; }
.footer-contact-row a:hover { color: var(--yellow); }
.footer-contact-row strong { color: rgba(255,255,255,0.8); font-weight: 500; }
.contact-sep { opacity: 0.25; }
.footer-right { text-align: right; }
.footer-geo { display: flex; gap: 12px; justify-content: flex-end; margin-bottom: 1rem; }
.fg-circle { width: 24px; height: 24px; border-radius: 50%; background: var(--red); }
.fg-square { width: 24px; height: 24px; background: var(--yellow); }
.fg-triangle { width: 0; height: 0; border-left: 12px solid transparent; border-right: 12px solid transparent; border-bottom: 21px solid var(--blue); }
.footer-copy { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em; color: rgba(255,255,255,0.2); text-transform: uppercase; }

/* DETAIL HERO */
body.detail-page { background: var(--white); }
.detail-hero { min-height: 85vh; padding-top: 60px; display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; }
.detail-hero-image-col { position: relative; overflow: hidden; background: var(--black); border-right: var(--border-thick); }
.detail-hero-img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; opacity: 0.72; transform: scale(1.04); transition: transform 1.4s var(--ease); }
.detail-hero:hover .detail-hero-img { transform: scale(1); }
.detail-hero-image-col::after { content: ''; position: absolute; inset: 0; }
.detail-hero-info-col { background: var(--white); padding: 80px 60px; display: flex; flex-direction: column; justify-content: flex-end; position: relative; overflow: hidden; }
.detail-hero-info-col::before { content: ''; position: absolute; top: -80px; right: -80px; width: 240px; height: 240px; border-radius: 50%; background: var(--yellow); pointer-events: none; opacity: 0.6; }
.detail-hero-info-col::after { content: ''; position: absolute; bottom: 100px; right: 70px; width: 55px; height: 55px; background: var(--red); pointer-events: none; }
.detail-tags { display: flex; gap: 6px; margin-bottom: 1.5rem; position: relative; z-index: 1; opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.15s; }
.detail-page .tag { background: var(--black); color: var(--white); }
.detail-title { font-family: var(--font-display); font-size: clamp(2.2rem, 4vw, 4.2rem); letter-spacing: 0.03em; line-height: 1.05; color: var(--black); margin-bottom: 1.2rem; position: relative; z-index: 1; opacity: 0; animation: bauFadeUp 0.8s var(--ease) forwards 0.25s; }
.detail-subtitle { font-family: var(--font-mono); font-size: 0.8rem; line-height: 1.85; color: var(--mid); margin-bottom: 2.5rem; max-width: 440px; position: relative; z-index: 1; opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.35s; border-left: 4px solid var(--red); padding-left: 1rem; }
.detail-visit-btn { display: inline-flex; align-items: center; gap: 16px; font-family: var(--font-display); font-size: 1rem; letter-spacing: 0.18em; color: var(--white); background: var(--black); padding: 14px 32px; border: var(--border-thick); position: relative; z-index: 1; align-self: flex-start; transition: background 0.2s, border-color 0.2s; opacity: 0; animation: bauFadeUp 0.7s var(--ease) forwards 0.5s; }
.detail-visit-btn:hover { background: var(--red); border-color: var(--red); }
.btn-arrow { font-size: 1.1rem; transition: transform 0.3s var(--ease); }
.detail-visit-btn:hover .btn-arrow { transform: translateX(6px); }

/* DETAIL BODY */
.detail-body { border-top: var(--border-thick); }
.detail-inner { max-width: 1440px; margin: 0 auto; padding: 0 2rem; }
.detail-meta-bar { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: var(--border-thick); }
.meta-item { padding: 2rem; border-right: var(--border); display: flex; flex-direction: column; gap: 8px; }
.meta-item:last-child { border-right: none; }
.meta-label { font-family: var(--font-mono); font-size: 0.6rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--mid); }
.meta-value { font-family: var(--font-display); font-size: 1.1rem; letter-spacing: 0.04em; color: var(--black); }
.meta-link { font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; color: var(--blue); letter-spacing: 0.04em; transition: color 0.2s; }
.meta-link:hover { color: var(--red); }
.device-icons { display: flex; gap: 8px; font-size: 1rem; }
.detail-content { display: grid; grid-template-columns: 1fr 1fr; border-bottom: var(--border-thick); }
.detail-desc { padding: 4rem 3rem 4rem 0; border-right: var(--border); }
.detail-features { padding: 4rem 0 4rem 3rem; }
.detail-section-title { font-family: var(--font-mono); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.25em; text-transform: uppercase; color: var(--mid); margin-bottom: 1.8rem; display: flex; align-items: center; gap: 12px; }
.detail-section-title::before { content: ''; display: inline-block; width: 24px; height: 3px; background: var(--red); flex-shrink: 0; }
.detail-desc p { font-size: 0.95rem; line-height: 1.9; color: #333; margin-bottom: 1.2rem; }
.detail-desc p:last-child { margin-bottom: 0; }
.feature-list { list-style: none; display: flex; flex-direction: column; }
.feature-list li { display: flex; align-items: center; gap: 16px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--black); padding: 0.9rem 0; border-bottom: 1px solid var(--gray); letter-spacing: 0.02em; }
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before { content: ''; flex-shrink: 0; width: 10px; height: 10px; background: var(--yellow); border: 2px solid var(--black); }

/* MOCKUP */
.detail-mockup { padding: 4rem 0 0; display: flex; align-items: flex-end; overflow: hidden; position: relative; border-bottom: var(--border-thick); background: var(--gray); }
.detail-mockup::before { content: 'PREVIEW'; position: absolute; top: 2rem; left: 2rem; font-family: var(--font-display); font-size: 6rem; color: rgba(0,0,0,0.04); letter-spacing: 0.1em; pointer-events: none; line-height: 1; }
.mockup-desktop { flex: 1; display: flex; flex-direction: column; align-items: center; padding: 0 3rem; }
.mockup-screen { width: 100%; border: var(--border-thick); border-bottom: none; overflow: hidden; background: var(--white); aspect-ratio: 16/9; }
.mockup-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.mockup-screen.thumb-error { display: flex; align-items: center; justify-content: center; }
.mockup-screen.thumb-error::after { content: attr(data-domain); font-family: var(--font-display); font-size: 1.4rem; color: var(--mid); }
.mockup-base-desktop { width: 50%; height: 10px; background: var(--black); }
.mockup-mobile { flex-shrink: 0; width: 130px; padding: 0 1rem 0 0; }
.mockup-mobile-frame { width: 100%; border: var(--border-thick); border-bottom: none; overflow: hidden; background: var(--white); aspect-ratio: 9/18; }
.mockup-mobile-frame img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.mockup-mobile-frame.thumb-error { display: flex; align-items: center; justify-content: center; }
.mockup-mobile-frame.thumb-error::after { content: attr(data-domain); font-family: var(--font-mono); font-size: 0.55rem; color: var(--mid); writing-mode: vertical-lr; }

/* DETAIL NAV */
.detail-nav { border-bottom: var(--border-thick); }
.detail-nav .detail-inner { display: flex; align-items: stretch; justify-content: space-between; height: 56px; }
.back-to-list { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mid); display: flex; align-items: center; padding: 0 1.5rem 0 0; border-right: var(--border); transition: color 0.2s; }
.back-to-list:hover { color: var(--black); }
.next-prev { display: flex; }
.prev-work, .next-work { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mid); display: flex; align-items: center; padding: 0 1.5rem; border-left: var(--border); transition: color 0.2s, background 0.2s; }
.prev-work:hover, .next-work:hover { color: var(--white); background: var(--black); }

/* ANIMATIONS */
@keyframes bauFadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes bauFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(110%); } to { transform: translateY(0); } }
@keyframes stripeDown { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@keyframes scrollPulse { 0%, 100% { transform: scaleY(1); opacity: 1; } 50% { transform: scaleY(0.5); opacity: 0.4; } }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); padding: 0 1.5rem; }
  .work-card:nth-child(3n) { border-right: var(--border); }
  .work-card:nth-child(2n) { border-right: none; }
  .detail-hero {
    grid-template-columns: 1fr;
    min-height: auto; /* 新增：取消預設的 85vh，讓父層不再被硬撐開 */
  }
  .detail-hero-image-col {
    height: auto; /* 修改：移除原本的 50vw，避免圖片區塊過矮 */
    aspect-ratio: 4 / 3; /* 新增：給予圖片一個自然的手機版比例 */
  }
  .detail-hero-info-col {
    padding: 4rem 2rem;
    justify-content: flex-start; /* 修改：將內容由 flex-end 改為靠上對齊，消除斷層空隙 */
  }
  .detail-meta-bar { grid-template-columns: 1fr 1fr; }
  .meta-item:nth-child(2) { border-right: none; }
  .meta-item:nth-child(1), .meta-item:nth-child(2) { border-bottom: var(--border); }
  .detail-content { grid-template-columns: 1fr; }
  .detail-desc { border-right: none; border-bottom: var(--border); padding: 3rem 0; }
  .detail-features { padding: 3rem 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-right { text-align: left; }
  .footer-geo { justify-content: flex-start; }
}

@media (max-width: 680px) {
  .hero { grid-template-columns: 1fr; }
  .hero-left { padding: 2.5rem 1.5rem; min-height: 60vh; }
  .hero-right { padding: 2rem 1.5rem; min-height: 30vh; }
  .hero-right-stripe { width: 40%; }
  .filter-label { display: none; }
  .filter-bar { padding: 0 1rem; }
  .works-grid { grid-template-columns: 1fr; padding: 0 1rem; }
  .work-card { border-right: none; }
  .header-inner { padding: 0 1rem; }
  .main-nav a { padding: 0 0.9rem; font-size: 0.65rem; }
  .detail-hero-info-col { padding: 2rem 1.5rem; }
  .detail-title { font-size: 2rem; }
  .detail-meta-bar { grid-template-columns: 1fr; }
  .meta-item { border-right: none; border-bottom: var(--border); }
  .meta-item:last-child { border-bottom: none; }
  .mockup-mobile { width: 90px; }
  .detail-nav .detail-inner { height: auto; flex-direction: column; }
  .back-to-list { height: 48px; border-right: none; border-bottom: var(--border); padding: 0; }
  .next-prev { height: 48px; }
  .prev-work { border-left: none; }
}