/* 本草纲目独立站 · 古籍风样式 */

:root {
  --paper: #f6f1e4;
  --paper-deep: #ece4cf;
  --ink: #2a241d;
  --ink-soft: #5a4f42;
  --rule: #c9bda0;
  --accent: #7a3b1c;       /* 朱砂红 */
  --accent-soft: #a66a47;
  --moss: #4a6a3a;         /* 苔绿 */
  --gold: #b88a3a;
  --shadow: rgba(60, 40, 20, 0.08);

  --ff-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --ff-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--ff-serif);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.7;
}

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 16px 28px 12px;
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(to bottom, var(--paper) 0%, var(--paper-deep) 100%);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand h1 {
  font-size: 1.6rem;
  margin: 0;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 700;
}

.brand .meta {
  margin-left: 14px;
  color: var(--ink-soft);
  font-size: 0.85rem;
  font-family: var(--ff-sans);
}

.vol-nav select {
  font-family: var(--ff-serif);
  font-size: 0.95rem;
  padding: 5px 10px;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink);
  border-radius: 3px;
  cursor: pointer;
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: calc(100vh - 110px);
  max-width: 1400px;
  margin: 0 auto;
}

@media (min-width: 1180px) {
  .layout {
    grid-template-columns: 300px 1fr 360px;
    max-width: 1600px;
  }
}

.chat-rail {
  display: none;
  padding: 12px 16px 16px;
  border-left: 1px solid var(--rule);
  position: sticky;
  top: 64px;
  height: calc(100vh - 110px);
  overflow: hidden;
}

@media (min-width: 1180px) {
  .chat-rail { display: block; }
}

.sidebar {
  border-right: 1px solid var(--rule);
  padding: 18px 16px 24px;
  overflow-y: auto;
  max-height: calc(100vh - 110px);
  position: sticky;
  top: 64px;
}

.content {
  padding: 28px 36px;
  max-width: 800px;
}

/* ---------- Sidebar ---------- */
.sb-section { margin-bottom: 14px; }

.sb-title {
  font-size: 1.1rem;
  margin: 0 0 4px;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 10px;
}

.sb-counts {
  font-size: 0.78rem;
  color: var(--ink-soft);
  font-family: var(--ff-sans);
  padding-left: 13px;
}

.filters {
  margin: 12px 0 18px;
  padding: 10px 0;
  border-top: 1px dashed var(--rule);
  border-bottom: 1px dashed var(--rule);
}

.filters details {
  margin-bottom: 6px;
}

.filters summary {
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--ink-soft);
  padding: 3px 0;
  font-family: var(--ff-sans);
  user-select: none;
}

.filters summary:hover { color: var(--accent); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 0 8px;
}

.chip {
  display: inline-block;
  padding: 2px 8px;
  font-size: 0.78rem;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 12px;
  transition: all 0.15s;
  font-family: var(--ff-sans);
}

.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.reset-btn {
  margin-top: 6px;
  padding: 3px 10px;
  font-size: 0.78rem;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 3px;
  font-family: var(--ff-sans);
}

.reset-btn:hover { border-color: var(--accent); color: var(--accent); }

.drug-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.drug-group {
  font-size: 0.82rem;
  color: var(--gold);
  font-family: var(--ff-sans);
  padding: 10px 0 4px;
  border-bottom: 1px dotted var(--rule);
  margin-bottom: 4px;
  letter-spacing: 0.1em;
}

.drug-item {
  padding: 4px 8px;
  cursor: pointer;
  border-radius: 3px;
  margin: 1px 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.drug-item:hover {
  background: var(--paper-deep);
}

.drug-item.active {
  background: var(--accent);
  color: #fff;
}

.drug-item.active .drug-tags { color: rgba(255, 255, 255, 0.7); }

.drug-name {
  font-size: 0.98rem;
  font-weight: 500;
}

.drug-tags {
  font-size: 0.72rem;
  color: var(--ink-soft);
  font-family: var(--ff-sans);
  margin-left: auto;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
}

.drug-item.hidden { display: none; }

/* ---------- Content ---------- */
.welcome {
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-soft);
}

.welcome h2 {
  color: var(--accent);
  letter-spacing: 0.2em;
}

.welcome .hint {
  margin-top: 30px;
  font-size: 0.9rem;
  color: var(--gold);
}

.drug-page h1 {
  font-size: 2rem;
  color: var(--accent);
  margin: 0 0 4px;
  letter-spacing: 0.1em;
}

.drug-breadcrumb {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 24px;
  font-family: var(--ff-sans);
}

.drug-breadcrumb .sep { color: var(--rule); margin: 0 6px; }

.summary-card {
  background: var(--paper-deep);
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  margin: 0 0 22px;
  font-size: 1rem;
  border-radius: 0 4px 4px 0;
}

.summary-card .summary-label {
  font-size: 0.78rem;
  color: var(--accent);
  font-family: var(--ff-sans);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.tags-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding: 10px 0 22px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 24px;
  font-size: 0.9rem;
  font-family: var(--ff-sans);
}

.tag-group .tag-label {
  color: var(--gold);
  font-size: 0.78rem;
  margin-right: 6px;
}

.tag-group .tag-val {
  color: var(--ink);
}

.section-title {
  font-size: 1.2rem;
  color: var(--accent);
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin: 28px 0 14px;
  letter-spacing: 0.08em;
}

.insight {
  margin: 0 0 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.4);
  border-left: 3px solid var(--moss);
  border-radius: 0 3px 3px 0;
}

.insight-head {
  font-weight: 600;
  color: var(--moss);
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.95rem;
  font-family: var(--ff-sans);
}

.insight-icon {
  font-size: 1.05rem;
}

.insight-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ink);
}

.yuanwen {
  background: var(--paper-deep);
  padding: 22px 26px;
  margin: 24px 0;
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-size: 1rem;
  line-height: 1.95;
  white-space: pre-wrap;
  font-family: "Noto Serif SC", "Songti SC", "STSong", "FangSong", serif;
  letter-spacing: 0.02em;
}

.yuanwen .marker {
  color: var(--accent);
  font-weight: 600;
}

/* prev / next */
.drug-pager {
  display: flex;
  justify-content: space-between;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--ff-sans);
  font-size: 0.9rem;
}

.pager-link {
  color: var(--ink-soft);
  text-decoration: none;
  cursor: pointer;
}

.pager-link:hover { color: var(--accent); }

.pager-link.disabled { visibility: hidden; }

.pager-link .nav-name { color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--rule);
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-family: var(--ff-sans);
  text-align: center;
}

/* ---------- Homepage ---------- */
.brand-link { text-decoration: none; color: inherit; }
.brand-link:hover h1 { color: var(--accent-soft); }

.home {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 28px 60px;
}

@media (min-width: 1180px) {
  .home {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 36px;
    max-width: 1500px;
    align-items: start;
  }
  .home .chat-rail {
    border-left: 1px solid var(--rule);
    padding-left: 18px;
  }
}

.home-hero {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: rgba(255, 252, 240, 0.5);
  box-shadow: 0 2px 8px var(--shadow);
  margin-bottom: 36px;
}

.home-hero .portrait {
  margin: 0;
  text-align: center;
}

.home-hero .portrait img {
  width: 100%;
  max-width: 220px;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
  box-shadow: 0 3px 10px var(--shadow);
  display: block;
}

.home-hero .portrait figcaption {
  margin-top: 8px;
  font-family: var(--ff-sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
}

.home-hero .hero-text h2 {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 1.3rem;
  letter-spacing: 0.1em;
}

.home-hero .hero-text p { margin: 6px 0; color: var(--ink-soft); }
.home-hero .hint { margin-top: 14px; font-family: var(--ff-sans); font-size: 0.9rem; }
.home-hero .hint strong { color: var(--accent); font-family: var(--ff-serif); }

@media (max-width: 640px) {
  .home-hero {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .home-hero .portrait img { max-width: 180px; margin: 0 auto; }
}

.home-section {
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}

.vol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.vol-card {
  position: relative;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 0;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--paper);
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
  min-height: 130px;
  transition: border-color 0.15s, transform 0.1s;
}

.vol-card:hover {
  border-color: var(--accent-soft);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px var(--shadow);
}

.vol-card-deco {
  display: block;
  width: 96px;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  border-right: 1px solid var(--rule);
  background: #fbf6e7;
  filter: sepia(0.06) saturate(0.95);
  transition: filter 0.2s, transform 0.3s;
}

.vol-card:hover .vol-card-deco {
  filter: sepia(0.02) saturate(1.05);
  transform: scale(1.03);
}

.vol-card-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  justify-content: center;
}

.vol-card-idx {
  font-family: var(--ff-sans);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.1em;
}

.vol-card-name {
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.vol-card-meta {
  font-family: var(--ff-sans);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 2px;
}

.drug-item.hidden { display: none; }

/* 窄屏: chat-rail 折叠到 content 下方,默认隐藏 → 显示在 layout 末尾 */
@media (max-width: 1179px) {
  .chat-rail {
    display: block;
    grid-column: 1 / -1;
    position: static;
    max-height: none;
    border-left: none;
    border-top: 1px solid var(--rule);
    padding: 24px 16px;
    background: rgba(255, 252, 240, 0.4);
  }
  .chat-rail > [data-chat-mount] {
    max-width: 720px;
    margin: 0 auto;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--rule);
  }
  .content {
    padding: 18px 16px;
  }
}