/* ============================================================
   归档页（archive.html）：波浪曲线时间轴
   ----------------------------------------------------
   桌面（≥900px）：卡片由 js/archive.js 绝对定位挂在正弦曲线两侧，
   曲线本体是一张 SVG（坐标与卡片同像素空间）；
   窄屏（<900px）：退化为单列 + 左侧竖线，SVG/节点/年份标全部隐藏。
   配色只取站点既有令牌（星光蓝 #8FB8FF / 暗底 #030712 / 次要字 #86868b）。
   ============================================================ */

#archive-wave {
  position: relative;
  margin-top: 0.5rem;
}

/* 分类筛选胶囊（.chips / .arc-chip）已挪到 css/style.css —— 链接页也要用同一套 */

#archive-list {
  position: relative;
}

/* 曲线层：压在卡片之下（卡片有背景，天然盖住穿过它的线段） */
#archive-svg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  overflow: visible;
  pointer-events: none;
  z-index: 0;
}

.wave-line {
  fill: none;
  stroke: rgba(143, 184, 255, 0.16);
  stroke-width: 1.5;
}

.wave-progress {
  fill: none;
  stroke: rgba(143, 184, 255, 0.6);
  stroke-width: 1.5;
  filter: drop-shadow(0 0 6px rgba(143, 184, 255, 0.35));
  transition: stroke-dashoffset 0.15s linear;
}

/* 节点：每个卡片在曲线上的锚点 */
.wave-node {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 9999px;
  background: #8fb8ff;
  box-shadow: 0 0 0 4px rgba(143, 184, 255, 0.12), 0 0 12px rgba(143, 184, 255, 0.5);
  transform: translate(-50%, -50%);
  z-index: 1;
}

/* 年份标：只在该年第一张卡片旁出现一次 */
.wave-year {
  position: absolute;
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(158, 176, 202, 0.72);
  background: rgba(3, 7, 18, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 9999px;
  padding: 1px 7px;
  white-space: nowrap;
  z-index: 2;
}

/* 卡片：位置由 JS 写 top/left/width，这里只管外观与悬停 */
.arc-card {
  position: relative;
  z-index: 2;
  display: block;
  padding: 1.05rem 1.15rem;
  color: inherit;
  text-decoration: none;
  transition: transform 0.25s var(--ease-swift), border-color 0.2s ease, box-shadow 0.25s var(--ease-swift);
}
.arc-card:hover {
  transform: translateY(-3px);
  border-color: rgba(143, 184, 255, 0.38);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
}
.arc-card:focus-visible {
  outline: 2px solid rgba(143, 184, 255, 0.7);
  outline-offset: 3px;
}

.arc-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 11px;
  color: #86868b;
  font-variant-numeric: tabular-nums;
}

.arc-pill {
  padding: 2px 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  color: #f5f5f7;
  font-size: 11px;
  font-weight: 500;
}

.arc-title {
  margin: 0.55rem 0 0.4rem;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: #f5f5f7;
}

.arc-sum {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 12.5px;
  line-height: 1.7;
  color: #86868b;
}

.arc-tags {
  margin-top: 0.6rem;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 10.5px;
  letter-spacing: 0.02em;
  color: rgba(158, 176, 202, 0.6);
}

.arc-empty {
  padding: 1.4rem 0 0.4rem;
  font-size: 13px;
  color: #86868b;
}

/* ---------- 桌面：卡片变成曲线两侧的绝对定位块 ---------- */
@media (min-width: 900px) {
  .arc-item {
    position: absolute;
  }
}

/* ---------- 窄屏：单列 + 左侧竖线，全部交给文档流 ---------- */
@media (max-width: 899px) {
  .arc-item {
    position: relative;
    margin: 0 0 16px 24px;
  }
  #archive-list::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(rgba(143, 184, 255, 0.4), rgba(143, 184, 255, 0.04));
  }
  .arc-item::before {
    content: "";
    position: absolute;
    left: -21px;
    top: 26px;
    width: 7px;
    height: 7px;
    border-radius: 9999px;
    background: #8fb8ff;
    box-shadow: 0 0 0 4px rgba(143, 184, 255, 0.12);
  }
  #archive-svg,
  .wave-node,
  .wave-year {
    display: none;
  }
}

/* ---------- 减少动态效果：只留淡入，不要位移与滚动进度动画 ---------- */
@media (prefers-reduced-motion: reduce) {
  .arc-card,
  .wave-progress {
    transition: none;
  }
  .arc-card:hover {
    transform: none;
  }
}