/* ============================================================
   耕语者 | 艺术成果 —— 军绿 · 简洁学术风
   ============================================================ */

:root {
  --bg-0: #3e4829;
  --bg-1: #475230;
  --bg-2: #505c38;
  --panel: rgba(255, 255, 255, .05);
  --panel-hover: rgba(255, 255, 255, .09);
  --ink: #eff2df;
  --ink-dim: #c3caa8;
  --ink-faint: #9ca383;
  --line: rgba(239, 242, 223, .2);
  --line-soft: rgba(239, 242, 223, .1);
  --serif: "Songti SC", "SimSun", "STSong", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--sans);
  background: var(--bg-0);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

button { font-family: inherit; }

.layer {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

.hidden { display: none !important; }

/* 通用：隐藏滚动条但保留滚动 */
.track { scrollbar-width: none; -ms-overflow-style: none; }
.track::-webkit-scrollbar { display: none; }

/* ============================================================
   首页层
   ============================================================ */
.stage-layer {
  z-index: 10;
  background:
    radial-gradient(1100px 520px at 50% -12%, rgba(255, 255, 255, .05), transparent 62%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 42%, var(--bg-2) 100%);
  transition: opacity .55s ease, transform .55s ease, filter .55s ease;
}

.stage-layer.exit {
  opacity: 0;
  transform: scale(1.04);
  filter: blur(6px);
  pointer-events: none;
}

/* ---- 标题 ---- */
.marquee {
  position: absolute;
  top: 6vh;
  left: 0; right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 8;
  text-align: center;
  pointer-events: none;
}
.marquee-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}
.marquee-title {
  font-family: var(--serif);
  font-size: clamp(30px, 4.2vw, 52px);
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--ink);
}
.marquee-title em {
  font-style: normal;
  font-weight: 300;
  color: var(--ink-faint);
  margin: 0 10px;
}
.marquee-sub {
  font-size: 12px;
  letter-spacing: .6em;
  text-indent: .6em;
  color: var(--ink-faint);
}
.marquee-deco { font-size: 20px; color: var(--ink-dim); }

/* ---- 管理入口 ---- */
.admin-entry {
  position: absolute;
  top: 22px;
  right: 26px;
  z-index: 60;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: .15em;
  padding: 8px 18px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-dim);
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .2s ease;
}
.admin-entry:hover {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
  transform: translateY(-2px);
}

/* ---- 中央：图谱 / 视频 ---- */
.stage-center {
  position: absolute;
  left: 0; right: 0;
  top: 52%;
  transform: translateY(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(30px, 5vw, 64px);
  z-index: 7;
  padding: 0 4vw;
}

.element-card {
  width: clamp(180px, 16vw, 224px);
  height: clamp(210px, 20vw, 250px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  cursor: pointer;
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
  outline: none;
}
.element-card:hover, .element-card:focus-visible {
  transform: translateY(-6px);
  border-color: var(--line);
  background: var(--panel-hover);
}
.element-card:focus-visible { outline: 1px dashed var(--ink-dim); outline-offset: 6px; }

.element-icon {
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-dim);
}
.icon-svg { width: 100%; height: 100%; }

.element-name {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: .32em;
  text-indent: .32em;
  color: var(--ink);
}
.element-hint {
  font-size: 11px;
  letter-spacing: .34em;
  text-indent: .34em;
  color: var(--ink-faint);
  border-top: 1px solid var(--line-soft);
  padding-top: 8px;
}

/* 点击“淡出”动画 */
.element-card.flying {
  transition: opacity .5s ease, filter .5s ease, transform .5s ease;
  transform: translateY(20px);
  opacity: 0;
  filter: blur(6px);
}

.stage-caption {
  position: absolute;
  bottom: 3.6vh;
  left: 0; right: 0;
  text-align: center;
  z-index: 7;
  font-size: 12px;
  letter-spacing: .3em;
  text-indent: .3em;
  color: var(--ink-faint);
  pointer-events: none;
}

/* ============================================================
   展示层（图谱 / 视频）
   ============================================================ */
.gallery-layer {
  z-index: 20;
  opacity: 0;
  visibility: hidden;
  transition: opacity .45s ease;
  background:
    radial-gradient(1100px 480px at 50% -10%, rgba(255, 255, 255, .04), transparent 62%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 45%, var(--bg-2) 100%);
}
.gallery-layer.open { opacity: 1; visibility: visible; }

/* ---- 头部：主题切换 + 标题 + 分类章节 ---- */
.gallery-head {
  position: absolute;
  top: 4.2vh;
  left: 0; right: 0;
  text-align: center;
  z-index: 5;
}
.gallery-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}
.gallery-tab {
  padding: 7px 22px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: .25em;
  text-indent: .25em;
  background: transparent;
  border: 1px solid var(--line-soft);
  color: var(--ink-dim);
  transition: border-color .25s ease, color .25s ease, background .25s ease, transform .2s ease;
  outline: none;
}
.gallery-tab:hover, .gallery-tab:focus-visible {
  border-color: var(--line);
  color: var(--ink);
  transform: translateY(-2px);
}
.gallery-tab.active {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
}
.gallery-title {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: .28em;
  text-indent: .28em;
  color: var(--ink);
}
.gallery-sub {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .3em;
  text-indent: .3em;
  color: var(--ink-faint);
}

/* ---- 分类章节 ---- */
.category-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.category-tab {
  padding: 6px 18px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12.5px;
  letter-spacing: .12em;
  background: transparent;
  border: 1px solid var(--line-soft);
  color: var(--ink-dim);
  transition: border-color .25s ease, color .25s ease, background .25s ease, transform .2s ease;
  outline: none;
}
.category-tab:hover, .category-tab:focus-visible {
  border-color: var(--line);
  color: var(--ink);
  transform: translateY(-2px);
}
.category-tab.active {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
}

/* ---- 主体 ---- */
.gallery-body {
  position: absolute;
  top: 23vh;
  left: 0; right: 0;
  bottom: 6vh;
  z-index: 4;
  display: flex;
  flex-direction: column;
  padding: 0 5vw;
}

.gallery-row {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.row-head {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.row-label {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: .2em;
  color: var(--ink);
}
.row-count {
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--ink-faint);
}
.row-nav {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.nav-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-dim);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .2s ease;
}
.nav-btn:hover {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
  transform: scale(1.06);
}
.nav-btn:active { transform: scale(.94); }
.nav-btn-sm { width: 32px; height: 32px; font-size: 16px; }

.track-wrap {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
}
.track {
  height: 100%;
  display: flex;
  align-items: stretch;
  gap: clamp(14px, 1.8vw, 22px);
  padding: 6px 3vw 6px 0;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  cursor: grab;
}
.track.dragging { cursor: grabbing; }

.gallery-foot {
  position: absolute;
  bottom: 2.2vh;
  left: 0; right: 0;
  text-align: center;
  z-index: 5;
  font-size: 12px;
  letter-spacing: .22em;
  text-indent: .22em;
  color: var(--ink-faint);
  pointer-events: none;
}

/* ---- 媒体卡片 ---- */
.media-card {
  width: clamp(220px, 18vw, 260px);
  flex-shrink: 0;
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition:
    transform .3s ease,
    border-color .3s ease,
    opacity .5s ease .08s;
}
.gallery-layer.open .media-card {
  opacity: 1;
  transform: none;
}
.media-card:hover {
  transform: translateY(-5px);
  border-color: var(--line);
  background: var(--panel-hover);
}

/* 图片卡片：宽度由 JS 按图片比例自适应，完整显示图片内容 */
.media-card[data-type="image"] {
  width: auto;
  min-width: 150px;
}

.mc-cover {
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: #1c2211;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mc-cover img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.mc-cover video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #1c2211;
}
.mc-video-thumb { pointer-events: none; }

.mc-tag {
  position: absolute;
  top: 10px; left: 10px;
  z-index: 2;
  font-size: 10px;
  letter-spacing: .15em;
  padding: 3px 9px;
  border-radius: 4px;
  background: rgba(30, 36, 18, .78);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  pointer-events: none;
}
.mc-time {
  position: absolute;
  top: 10px; right: 10px;
  z-index: 2;
  font-size: 10px;
  letter-spacing: .05em;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(30, 36, 18, .78);
  color: var(--ink-dim);
  pointer-events: none;
}
.mc-play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 44px; height: 44px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(30, 36, 18, .72);
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 15px;
  pointer-events: none;
}

.mc-body {
  flex-shrink: 0;
  padding: 11px 14px 13px;
  border-top: 1px solid var(--line-soft);
}
.mc-title {
  font-size: 14.5px;
  letter-spacing: .04em;
  color: var(--ink);
  font-weight: 600;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.mc-desc {
  margin-top: 5px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-faint);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 行内空态 */
.row-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  height: 100%;
  color: var(--ink-faint);
  border: 1px dashed var(--line);
  border-radius: 12px;
  font-size: 13px;
  letter-spacing: .12em;
}
.row-empty .re-link {
  font-size: 12px;
  padding: 7px 18px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-dim);
  cursor: pointer;
  transition: background .25s ease, color .25s ease, border-color .25s ease;
}
.row-empty .re-link:hover {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
}

/* ============================================================
   返回按钮 / Toast / 大图预览
   ============================================================ */
.back-btn {
  position: absolute;
  top: 22px;
  left: 26px;
  z-index: 60;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: .12em;
  padding: 10px 22px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-dim);
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .2s ease;
}
.back-btn:hover {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
  transform: translateY(-2px);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 9vh;
  transform: translateX(-50%);
  z-index: 99;
  background: rgba(46, 55, 31, .96);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 11px 26px;
  border-radius: 6px;
  font-size: 13px;
  letter-spacing: .1em;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
  transition: opacity .4s;
  max-width: 80vw;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- 放大预览层 ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(22, 28, 15, .92);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  opacity: 0;
  transition: opacity .3s ease;
}
.lightbox.open { opacity: 1; }

.lb-card {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  max-width: 88vw;
  max-height: 82vh;
  background: #39432a;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 34px 80px rgba(0, 0, 0, .7);
  cursor: default;
  transform: scale(.9) translateY(14px);
  opacity: 0;
  transition: transform .35s cubic-bezier(.2, .9, .28, 1.08), opacity .3s ease;
}
.lightbox.open .lb-card {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.lb-media {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1c2211;
  min-width: 0;
}
.lb-img {
  max-width: min(56vw, 900px);
  max-height: 80vh;
  object-fit: contain;
  display: block;
}
.lb-video {
  max-width: min(58vw, 920px);
  max-height: 80vh;
  display: block;
  background: #1c2211;
}

.lb-info {
  width: clamp(220px, 22vw, 320px);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 40px 28px;
  border-left: 1px solid var(--line-soft);
}
.lb-kicker {
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--ink-faint);
}
.lb-title {
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--ink);
}
.lb-desc {
  font-size: 13px;
  line-height: 1.9;
  color: var(--ink-dim);
}

.lb-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(46, 55, 31, .85);
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: background .25s ease, border-color .25s ease, color .25s ease, transform .3s ease;
  z-index: 2;
}
.lb-close:hover {
  background: var(--panel-hover);
  border-color: var(--ink);
  color: var(--ink);
  transform: rotate(90deg);
}

@media (max-width: 860px) {
  .lb-card { flex-direction: column; max-height: 88vh; }
  .lb-media { order: -1; }
  .lb-img, .lb-video { max-width: 82vw; max-height: 46vh; }
  .lb-info { width: 100%; padding: 20px 22px; border-left: none; border-top: 1px solid var(--line-soft); }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 860px) {
  .stage-center { padding: 0 2vw; gap: 18px; }
  .gallery-body { padding: 0 4vw; }
  .gallery-title { letter-spacing: .16em; text-indent: .16em; }
}