/* 我的作品集 — 深色优雅主题，无外部依赖 */
:root {
  --bg: #0b0b0d;
  --bg-elev: #121216;
  --card: #17171c;
  --line: rgba(212, 180, 131, 0.2);
  --line-soft: rgba(244, 240, 231, 0.08);
  --text: #f4f0e7;
  --muted: #8f8a80;
  --gold: #d4b483;
  --gold-soft: #e8d5ae;
  --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --sans: "Noto Sans CJK SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --header-h: 4.25rem;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: 0.04em; margin: 0; line-height: 1.2; }

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='0.9'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(11, 11, 13, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line-soft);
}
.logo {
  font-family: var(--serif);
  font-size: 1.15rem;
  letter-spacing: 0.28em;
  color: var(--gold);
}
.nav { display: flex; gap: 1.75rem; }
.nav a {
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  transition: color 0.2s ease;
}
.nav a:hover { color: var(--gold-soft); }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-h) + 2rem) var(--pad) 4rem;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 18%, rgba(212, 180, 131, 0.11), transparent 52%),
    radial-gradient(ellipse at 50% 100%, rgba(20, 24, 40, 0.8), transparent 46%);
  pointer-events: none;
}
.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 1.1rem;
}
.hero h1 {
  font-size: clamp(2.8rem, 9vw, 6.4rem);
  font-weight: 500;
  letter-spacing: 0.16em;
  position: relative;
}
.tagline {
  margin: 1.5rem 0 0;
  max-width: 26em;
  color: var(--muted);
  font-size: clamp(0.98rem, 2vw, 1.15rem);
  letter-spacing: 0.08em;
  position: relative;
}
.scroll-hint {
  position: relative;
  margin-top: 3.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  color: var(--gold);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}
.scroll-hint::after {
  content: "";
  width: 1px;
  height: 2.6rem;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.25; transform: scaleY(0.75); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Sections */
.section { padding: 5.5rem var(--pad); }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.4rem;
  flex-wrap: wrap;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line);
}
.section h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: 0.12em; }

.filters { display: flex; gap: 0.4rem; }
.filter {
  padding: 0.45rem 1.05rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.filter:hover { color: var(--text); }
.filter.is-active {
  color: var(--bg);
  background: var(--gold);
  border-color: var(--gold);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.15rem;
}
.card {
  position: relative;
  display: block;
  background: var(--card);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  width: 100%;
  padding: 0;
  color: inherit;
  animation: fadeup 0.7s ease both;
}
.card.wide { grid-column: span 1; }
@media (min-width: 840px) {
  .card.wide { grid-column: span 2; }
}
.card-media {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: #0e0e12;
}
.card.wide .card-media,
.card.landscape .card-media { aspect-ratio: 16 / 10; }
.card-media img,
.card-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}
.card:hover .card-media img,
.card:hover .card-media video { transform: scale(1.06); }
.card-body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 3.2rem 1.05rem 0.95rem;
  background: linear-gradient(to top, rgba(8,8,10,0.92), rgba(8,8,10,0.0));
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.badge {
  align-self: flex-start;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  border: 1px solid var(--line);
  padding: 0.15rem 0.45rem;
  margin-bottom: 0.4rem;
  border-radius: 2px;
}
.card-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  letter-spacing: 0.12em;
}
.card-meta {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}
.play-mark {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 3.4rem; height: 3.4rem;
  border-radius: 50%;
  border: 1px solid rgba(244, 240, 231, 0.55);
  background: rgba(11, 11, 13, 0.35);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  transition: background 0.2s, transform 0.2s;
}
.play-mark::before {
  content: "";
  width: 0; height: 0;
  border-style: solid;
  border-width: 7px 0 7px 12px;
  border-color: transparent transparent transparent var(--text);
  margin-left: 3px;
}
.card:hover .play-mark { background: rgba(212, 180, 131, 0.28); transform: translate(-50%, -50%) scale(1.06); }

.empty { color: var(--muted); text-align: center; padding: 3rem 0; }

@keyframes fadeup {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

/* About / Contact */
.about { border-top: 1px solid var(--line-soft); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
  max-width: 960px;
}
@media (min-width: 800px) {
  .about-grid { grid-template-columns: 0.7fr 1.3fr; gap: 4rem; }
}
.about-copy p { margin: 0 0 1rem; color: var(--muted); font-size: 1.02rem; max-width: 42em; }
.about-copy p:last-child { margin-bottom: 0; }

.contact { border-top: 1px solid var(--line-soft); }
.contact-lead { color: var(--muted); max-width: 36em; }
.contact-lead .note { color: #6e6a63; }
.contact-list {
  list-style: none;
  padding: 1.5rem 0 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  max-width: 800px;
}
@media (min-width: 700px) {
  .contact-list { grid-template-columns: repeat(3, 1fr); gap: 2rem; padding-top: 2.2rem; }
}
.contact-list .label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin-bottom: 0.35rem;
}
.contact-list span:last-child { letter-spacing: 0.04em; }

.site-footer {
  padding: 2rem var(--pad) 2.6rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

/* Lightbox */
.lightbox[hidden] { display: none; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 4.5rem 3.5rem 5.5rem;
}
.lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 6, 8, 0.92);
}
.lb-stage {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: min(1100px, 100%);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}
.lb-stage img,
.lb-stage video {
  max-height: min(78vh, 900px);
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  background: #000;
  box-shadow: 0 20px 80px rgba(0,0,0,0.45);
}
.lb-stage video { width: min(1100px, 92vw); }
.lb-stage img[hidden],
.lb-stage video[hidden] { display: none; }
.lb-stage figcaption {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-width: 40em;
}
.lb-type {
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  color: var(--gold);
}
#lb-title {
  font-family: var(--serif);
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  font-weight: 500;
}
#lb-desc { color: var(--muted); font-size: 0.9rem; }
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  z-index: 2;
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  color: var(--text);
  font-size: 1.6rem;
  border-radius: 50%;
  border: 1px solid var(--line-soft);
  background: rgba(20,20,24,0.5);
  transition: background 0.2s, color 0.2s;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(212,180,131,0.2); color: var(--gold-soft); }
.lb-close { top: 1rem; right: 1rem; font-size: 1.8rem; }
.lb-prev { left: 0.6rem; top: 50%; transform: translateY(-50%); }
.lb-next { right: 0.6rem; top: 50%; transform: translateY(-50%); }

body.lb-open { overflow: hidden; }

@media (max-width: 640px) {
  .nav { gap: 1rem; }
  .lightbox { padding: 4rem 0.6rem 5rem; }
  .lb-prev, .lb-next { top: auto; bottom: 0.7rem; transform: none; }
  .lb-prev { left: 0.7rem; }
  .lb-next { right: 0.7rem; }
  .card-title { font-size: 1.02rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}