/* 墨影相册 — 水墨气质 · 多排版 · 多动效 */

:root {
  --ink: #1a1814;
  --ink-soft: #2c2822;
  --paper: #e8e2d6;
  --paper-dim: #d4cbb8;
  --mist: rgba(232, 226, 214, 0.08);
  --jade: #3d6b5a;
  --jade-bright: #5a9a7e;
  --gold: #c4a35a;
  --gold-soft: rgba(196, 163, 90, 0.35);
  --vermilion: #a63d2f;
  --stroke: rgba(232, 226, 214, 0.14);
  --shadow: rgba(0, 0, 0, 0.45);
  --radius: 2px;
  --header-h: 5.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Ma Shan Zheng", "ZCOOL XiaoWei", cursive;
  --font-body: "Noto Serif SC", "Songti SC", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  font-family: var(--font-body);
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(61, 107, 90, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(166, 61, 47, 0.1), transparent 50%),
    linear-gradient(165deg, #12100e 0%, #1a1814 40%, #151310 100%);
  overflow-x: hidden;
}

/* 氛围雾气 */
.mist {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.mist-a {
  background:
    radial-gradient(ellipse 50% 30% at 30% 70%, rgba(232, 226, 214, 0.06), transparent),
    radial-gradient(ellipse 40% 25% at 70% 40%, rgba(90, 154, 126, 0.05), transparent);
  animation: mist-drift 28s ease-in-out infinite alternate;
}

.mist-b {
  background: radial-gradient(ellipse 45% 35% at 55% 20%, rgba(196, 163, 90, 0.04), transparent);
  animation: mist-drift 36s ease-in-out infinite alternate-reverse;
}

@keyframes mist-drift {
  from { transform: translate3d(-2%, 1%, 0) scale(1); }
  to { transform: translate3d(3%, -2%, 0) scale(1.05); }
}

#fx-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 40;
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(180deg, rgba(18, 16, 14, 0.92), rgba(18, 16, 14, 0.75));
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--stroke);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.chip-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
}

.chip {
  margin: 0;
  padding: 0.38rem 0.7rem;
  color: rgba(232, 226, 214, 0.7);
  font-family: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  background: transparent;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s, background 0.25s, transform 0.2s;
}

.chip:hover {
  color: var(--paper);
  border-color: rgba(196, 163, 90, 0.45);
}

.chip.is-active {
  color: var(--ink);
  background: linear-gradient(135deg, var(--gold), #dfc878);
  border-color: transparent;
}

/* —— Hero —— */
.hero {
  padding: 2.75rem 1.75rem 1.5rem;
  max-width: 72rem;
  margin: 0 auto;
}

.hero-kicker {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--jade-bright);
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  line-height: 1.1;
  background: linear-gradient(100deg, var(--paper) 20%, var(--gold) 55%, var(--paper) 90%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: title-flow 8s ease-in-out infinite;
}

@keyframes title-flow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-desc {
  margin: 0.75rem 0 0;
  max-width: 32rem;
  color: rgba(232, 226, 214, 0.62);
  font-size: 0.92rem;
  letter-spacing: 0.06em;
}

/* —— Gallery —— */
.gallery {
  max-width: 88rem;
  margin: 0 auto;
  padding: 0.5rem 1.25rem 3.5rem;
}

.card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-soft);
  cursor: pointer;
  isolation: isolate;
  opacity: 0;
  transform: translateY(18px);
  animation: card-in 0.7s var(--ease) forwards;
}

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

.card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease), filter 0.5s;
}

.card:hover img {
  transform: scale(1.04);
  filter: brightness(1.05) saturate(1.05);
}

.card-meta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.2rem 0.9rem 0.75rem;
  background: linear-gradient(transparent, rgba(10, 8, 6, 0.85));
  transform: translateY(30%);
  opacity: 0;
  transition: transform 0.4s var(--ease), opacity 0.35s;
}

.card:hover .card-meta,
.card:focus-within .card-meta {
  transform: translateY(0);
  opacity: 1;
}

.card-title {
  margin: 0;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

.card-name {
  margin: 0.2rem 0 0;
  font-size: 0.68rem;
  color: rgba(232, 226, 214, 0.5);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 呼吸效果 */
body.fx-breathe .card {
  animation: card-in 0.7s var(--ease) forwards, breathe 5.5s ease-in-out infinite;
  animation-delay: var(--delay, 0s), calc(var(--delay, 0s) + 0.7s);
}

@keyframes breathe {
  0%, 100% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.015); filter: brightness(1.06); }
}

body.fx-breathe .card:hover {
  animation-play-state: paused;
  transform: scale(1.02);
}

/* 流光扫光 */
.shine-surface {
  position: relative;
  overflow: hidden;
}

body.fx-shine .card::after,
body.fx-shine .lb-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 35%,
    rgba(255, 255, 255, 0.08) 45%,
    rgba(255, 240, 200, 0.28) 50%,
    rgba(255, 255, 255, 0.08) 55%,
    transparent 65%
  );
  transform: translateX(-120%) skewX(-12deg);
  pointer-events: none;
  z-index: 2;
}

body.fx-shine .card:hover::after,
body.fx-shine .lb-frame.shine-active::after {
  animation: shine-sweep 1.1s var(--ease) forwards;
}

@keyframes shine-sweep {
  to { transform: translateX(120%) skewX(-12deg); }
}

/* —— Layouts —— */

/* 瀑布 */
.layout-masonry {
  columns: 4 220px;
  column-gap: 0.85rem;
}

.layout-masonry .card {
  break-inside: avoid;
  margin-bottom: 0.85rem;
  height: auto;
}

.layout-masonry .card img {
  height: auto;
  min-height: 140px;
  max-height: 420px;
}

.layout-masonry .card:nth-child(3n) img { max-height: 360px; }
.layout-masonry .card:nth-child(5n) img { max-height: 480px; }

/* 宫格 */
.layout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.85rem;
}

.layout-grid .card {
  aspect-ratio: 1;
}

/* 镶嵌 */
.layout-mosaic {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 110px;
  gap: 0.75rem;
}

.layout-mosaic .card:nth-child(7n + 1) {
  grid-column: span 3;
  grid-row: span 3;
}

.layout-mosaic .card:nth-child(7n + 2),
.layout-mosaic .card:nth-child(7n + 3) {
  grid-column: span 3;
  grid-row: span 2;
}

.layout-mosaic .card:nth-child(7n + 4),
.layout-mosaic .card:nth-child(7n + 5),
.layout-mosaic .card:nth-child(7n + 6),
.layout-mosaic .card:nth-child(7n + 7) {
  grid-column: span 2;
  grid-row: span 2;
}

/* 胶片 */
.layout-film {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 1.5rem 0.5rem 2rem;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-soft) transparent;
}

.layout-film .card {
  flex: 0 0 min(72vw, 380px);
  aspect-ratio: 3 / 4;
  scroll-snap-align: center;
  box-shadow: 0 16px 40px var(--shadow);
}

.layout-film .card img {
  object-fit: cover;
}

/* 展台 */
.layout-showcase {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-auto-rows: minmax(240px, auto);
  gap: 0.85rem;
}

.layout-showcase > .card:first-child {
  grid-row: 1 / span 2;
  min-height: 520px;
}

.layout-showcase > .card {
  min-height: 250px;
}

.layout-showcase > .rest-panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.85rem;
}

.layout-showcase .rest-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: var(--ink-soft);
  cursor: pointer;
  isolation: isolate;
}

.layout-showcase .rest-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.layout-showcase .rest-item:hover img {
  transform: scale(1.05);
}

body.fx-shine .rest-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 35%,
    rgba(255, 255, 255, 0.08) 45%,
    rgba(255, 240, 200, 0.28) 50%,
    rgba(255, 255, 255, 0.08) 55%,
    transparent 65%
  );
  transform: translateX(-120%) skewX(-12deg);
  pointer-events: none;
  z-index: 2;
}

body.fx-shine .rest-item:hover::after {
  animation: shine-sweep 1.1s var(--ease) forwards;
}

/* —— Lightbox —— */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem;
  background: rgba(8, 6, 5, 0.88);
  backdrop-filter: blur(10px);
}

.lightbox[hidden] {
  display: none;
}

.lb-stage {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  max-height: 92vh;
}

.lb-frame {
  position: relative;
  max-width: min(92vw, 1100px);
  max-height: 82vh;
  border: 1px solid var(--stroke);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.lb-frame img {
  display: block;
  max-width: 92vw;
  max-height: 82vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.lb-water {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: 0.85;
}

#lb-caption {
  color: rgba(232, 226, 214, 0.8);
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-align: center;
}

.lb-close,
.lb-nav {
  appearance: none;
  border: 1px solid var(--stroke);
  background: rgba(44, 40, 34, 0.7);
  color: var(--paper);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.lb-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.5rem;
  line-height: 1;
  border-radius: 50%;
  z-index: 2;
}

.lb-nav {
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.75rem;
  border-radius: 50%;
  line-height: 1;
}

.lb-close:hover,
.lb-nav:hover {
  border-color: var(--gold);
  background: rgba(196, 163, 90, 0.2);
  transform: scale(1.05);
}

/* —— Footer —— */
.site-footer {
  padding: 1.5rem 1.75rem 2.5rem;
  text-align: center;
  color: rgba(232, 226, 214, 0.4);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  border-top: 1px solid var(--stroke);
}

.site-footer code {
  padding: 0.1em 0.4em;
  color: var(--gold);
  background: rgba(196, 163, 90, 0.12);
  border-radius: 2px;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 4rem 1rem;
  text-align: center;
  color: rgba(232, 226, 214, 0.55);
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .layout-mosaic {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 90px;
  }

  .layout-mosaic .card:nth-child(7n + 1) {
    grid-column: span 2;
    grid-row: span 2;
  }

  .layout-showcase {
    grid-template-columns: 1fr;
  }

  .layout-showcase > .card:first-child {
    grid-row: auto;
    min-height: 360px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0.65rem 0.75rem;
  }

  .hero {
    padding: 1.75rem 1rem 1rem;
  }

  .gallery {
    padding-inline: 0.85rem;
  }

  .layout-masonry {
    columns: 2 140px;
  }

  .lightbox {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    padding: 3.5rem 0.75rem 1rem;
  }

  .lb-nav {
    position: absolute;
    bottom: 1rem;
  }

  .lb-nav.prev { left: 1rem; }
  .lb-nav.next { right: 1rem; }
}