/*
  sandbox/publications/static/publications/publications.css
  License: https://csrs.riken.jp/en/labs/emart/index.html
  Date: 20261028
  Version: 1.2.0
  @Antigravity, 20261028, [NEW] 前台样式: 暖纸色护眼主题 + 时间线 + 卡片
*/

:root {
  --paper: hsl(42, 40%, 96%);
  --paper-2: hsl(40, 32%, 92%);
  --card: hsla(0, 0%, 100%, 0.72);
  --ink: hsl(28, 20%, 16%);
  --ink-2: hsl(28, 10%, 38%);
  --ink-3: hsl(30, 8%, 56%);
  --line: hsla(30, 30%, 30%, 0.12);
  --sage: hsl(158, 32%, 36%);
  --sage-soft: hsla(158, 32%, 36%, 0.10);
  --amber: hsl(32, 78%, 42%);
  --amber-soft: hsla(32, 78%, 50%, 0.12);
  --navy: hsl(214, 48%, 32%);
  --navy-soft: hsla(214, 48%, 40%, 0.09);
  --shadow: 0 1px 2px hsla(30, 30%, 20%, 0.06), 0 8px 28px hsla(30, 30%, 20%, 0.07);
  --shadow-hover: 0 2px 4px hsla(30, 30%, 20%, 0.08), 0 18px 44px hsla(30, 30%, 20%, 0.13);
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  font: 15px/1.6 var(--font-ui);
  background:
    radial-gradient(1000px 520px at 100% 0%, hsla(158, 40%, 70%, 0.18), transparent 60%),
    radial-gradient(900px 480px at 0% 30%, hsla(32, 80%, 75%, 0.16), transparent 60%),
    var(--paper);
  min-height: 100vh;
}

/* ------------------------------------------------ hero */
.hero { padding: 72px 24px 40px; }
.hero-inner { max-width: 980px; margin: 0 auto; animation: rise 0.5s ease both; }
.eyebrow {
  margin: 0 0 10px;
  font: 600 12px var(--font-ui);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sage);
}
.hero h1 {
  margin: 0;
  font: 600 clamp(34px, 5vw, 54px)/1.08 var(--font-serif);
  letter-spacing: -0.01em;
}
.hero h1 span { color: var(--amber); font-style: italic; font-weight: 400; }
.lede { max-width: 620px; color: var(--ink-2); font-size: 16px; margin: 14px 0 26px; }

.stats { display: flex; flex-wrap: wrap; gap: 12px; }
.stat {
  padding: 10px 18px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
.stat b { display: block; font: 600 22px var(--font-serif); }
.stat small { color: var(--ink-3); font-size: 12px; letter-spacing: 0.04em; }

/* ------------------------------------------------ toolbar */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  max-width: 1028px;
  margin: 0 auto;
  padding: 12px 24px;
  background: hsla(42, 40%, 96%, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-2);
  padding: 6px 14px;
  border-radius: 999px;
  font: 500 13px var(--font-ui);
  cursor: pointer;
  transition: all 0.2s ease;
}
.chip:hover { border-color: var(--sage); color: var(--sage); }
.chip.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
#search-box {
  flex: 1;
  min-width: 220px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  font: 14px var(--font-ui);
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}
#search-box:focus { outline: none; border-color: var(--sage); box-shadow: 0 0 0 4px var(--sage-soft); }

/* ------------------------------------------------ timeline */
.timeline { max-width: 1028px; margin: 0 auto; padding: 28px 24px 60px; }

.year-group {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 24px;
  margin-bottom: 18px;
}
.year-label {
  position: sticky;
  top: 72px;
  align-self: start;
  font: 600 30px var(--font-serif);
  color: var(--ink-3);
  text-align: right;
  padding-top: 10px;
}
.year-label small { display: block; font: 500 11px var(--font-ui); letter-spacing: 0.12em; color: var(--amber); }
.year-cards { display: grid; gap: 14px; border-left: 2px solid var(--line); padding-left: 24px; }

.card {
  position: relative;
  padding: 18px 22px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  animation: rise 0.4s ease both;
}
.card::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--sage);
}
.card.pending::before { border-color: var(--amber); border-style: dashed; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }

.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.tag {
  padding: 2px 9px;
  border-radius: 999px;
  font: 600 11px var(--font-ui);
  letter-spacing: 0.04em;
  background: var(--navy-soft);
  color: var(--navy);
}
.tag.data { background: var(--sage-soft); color: var(--sage); }
.tag.stage { background: var(--amber-soft); color: var(--amber); }

.citation { font: 16px/1.62 var(--font-serif); color: var(--ink); }
.citation a { color: var(--navy); text-decoration: none; border-bottom: 1px solid hsla(214, 48%, 32%, 0.3); }
.citation a:hover { border-bottom-color: var(--navy); }
.citation mark { background: hsla(48, 100%, 60%, 0.45); color: inherit; border-radius: 3px; }

.keywords { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.keywords span { font-size: 12px; color: var(--ink-3); }
.keywords span::before { content: "#"; opacity: 0.6; }

.abstract-toggle {
  margin-top: 8px;
  border: 0;
  background: none;
  padding: 0;
  font: 500 12px var(--font-ui);
  color: var(--sage);
  cursor: pointer;
}
.abstract {
  margin: 8px 0 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--paper-2);
  color: var(--ink-2);
  font: 14px/1.6 var(--font-serif);
  display: none;
}
.card.open .abstract { display: block; animation: rise 0.25s ease both; }

.assets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  border: 1px solid hsla(158, 32%, 36%, 0.35);
  background: var(--sage-soft);
  color: var(--sage);
  font: 500 13px var(--font-ui);
  text-decoration: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.pill:hover { background: var(--sage); color: white; transform: translateY(-1px); box-shadow: 0 6px 16px hsla(158, 32%, 36%, 0.3); }
.pill .ico { font-size: 14px; }
.pill .size { font-size: 11px; opacity: 0.75; font-weight: 600; }
.pill.off { border-style: dashed; border-color: var(--line); background: transparent; color: var(--ink-3); cursor: not-allowed; }
.pill.off:hover { background: transparent; color: var(--ink-3); transform: none; box-shadow: none; }

.empty { text-align: center; color: var(--ink-3); padding: 60px 0; font-family: var(--font-serif); font-size: 18px; }

.loading { display: flex; justify-content: center; gap: 8px; padding: 80px 0; }
.loading span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sage);
  animation: bounce 1s ease-in-out infinite;
}
.loading span:nth-child(2) { animation-delay: 0.15s; }
.loading span:nth-child(3) { animation-delay: 0.3s; }

.foot { text-align: center; color: var(--ink-3); font-size: 12px; padding: 0 0 40px; }

@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes bounce { 0%, 100% { transform: translateY(0); opacity: 0.4; } 50% { transform: translateY(-8px); opacity: 1; } }

@media (max-width: 720px) {
  .year-group { grid-template-columns: 1fr; gap: 8px; }
  .year-label { position: static; text-align: left; font-size: 24px; }
  .year-cards { border-left: 0; padding-left: 0; }
  .card::before { display: none; }
}