/* research_hub — AlphaPai-style buyside research dashboard */

:root {
  --bg: #f7f9fc;
  --bg-card: #ffffff;
  --border: #e6ebf2;
  --border-strong: #d1d9e3;
  --text: #1c2532;
  --text-2: #4b5566;
  --text-3: #8995a8;
  --accent: #1f4ed8;
  --accent-soft: #eef2ff;
  --accent-hover: #1539ad;
  --up: #d9362a;       /* A-share 红涨 */
  --up-soft: #fdecea;
  --down: #16a34a;     /* A-share 绿跌 */
  --down-soft: #e9f8ef;
  --flat: #8995a8;
  --chip-bg: #f1f5fb;
  --chip-bg-hover: #e7eef8;
  --shadow-sm: 0 1px 2px rgba(20, 35, 60, 0.04);
  --shadow-md: 0 4px 12px rgba(20, 35, 60, 0.06);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, "Apple Color Emoji", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ========== top bar ========== */
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.topbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px;
}
.brand-mark { color: var(--accent); font-size: 18px; }
.brand-mark-link { line-height: 0; }
.brand-name {
  font-weight: 700; color: var(--text); font-size: 17px;
}
.brand-sub {
  color: var(--text-3); font-size: 13px;
  padding-left: 10px; border-left: 1px solid var(--border-strong);
  margin-left: 4px;
}
.topbar-right {
  display: flex; align-items: center; gap: 18px;
}
.date-picker {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-2);
}
.date-picker select {
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 6px 10px;
  background: #fff;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
}
.date-picker select:hover { border-color: var(--accent); }
.watermark-tip {
  font-size: 11px; color: var(--text-3);
  padding: 4px 10px; border: 1px dashed var(--border-strong);
  border-radius: 4px;
}

/* ========== container ========== */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px 80px;
}
.meta-row {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 18px;
}
.meta-row h1 {
  font-size: 22px; font-weight: 700; margin: 0; letter-spacing: -0.5px;
}
.meta { color: var(--text-3); font-size: 13px; }

/* ========== theme list (index) ========== */
.theme-list {
  list-style: none; padding: 0; margin: 0;
}
.theme-list > li.theme-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 28px 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: box-shadow .15s, border-color .15s, transform .12s;
  cursor: pointer;
}
.theme-list > li.theme-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.theme-card .heat-row {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; margin-bottom: 6px;
}
.theme-card .heat-title {
  flex: 1;
  display: flex; align-items: baseline; gap: 12px;
}
.theme-card .heat-idx {
  color: var(--up); font-weight: 700; font-style: italic;
  font-size: 15px; min-width: 22px; text-align: right;
}
.theme-card .heat-tt {
  font-size: 19px; font-weight: 700; color: var(--text);
  letter-spacing: -0.3px; line-height: 1.35;
}
.theme-card .heat-flames {
  color: var(--up); font-size: 14px; letter-spacing: 1px;
  flex-shrink: 0;
}
.theme-card .narrative {
  color: var(--text-2);
  font-size: 14px; line-height: 1.75;
  margin: 8px 0 14px 36px;
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical;
  overflow: hidden;
}
.theme-card .chip-row {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-left: 36px;
}

/* ========== company chip ========== */
.chip {
  display: inline-flex; align-items: center;
  background: var(--chip-bg);
  border-radius: 4px; padding: 4px 9px;
  font-size: 12.5px;
  color: var(--text-2);
  transition: background .12s;
}
.chip .chip-name { font-weight: 500; color: var(--text); }
.chip .chip-pct { margin-left: 6px; font-weight: 600; }
.chip.up .chip-pct { color: var(--up); }
.chip.down .chip-pct { color: var(--down); }
.chip.flat .chip-pct { color: var(--flat); }
.chip-more {
  display: inline-flex; align-items: center;
  background: transparent; border: 1px solid var(--border-strong);
  border-radius: 4px; padding: 4px 8px;
  font-size: 12px; color: var(--text-3);
}

/* ========== theme detail page ========== */
.layout {
  max-width: 1320px; margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 260px 1fr; gap: 28px;
  align-items: start;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

.sidebar {
  position: sticky; top: 72px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 8px;
  margin-top: 28px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
}
.sidebar-title {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px 10px;
  font-size: 13px; font-weight: 700; color: var(--text);
  border-bottom: 1px solid var(--border);
  margin-bottom: 6px;
}
.sidebar-title .dot { color: var(--up); }
.sidebar-item {
  display: block; padding: 9px 10px;
  font-size: 13px; line-height: 1.45;
  color: var(--text-2);
  border-radius: 6px;
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.sidebar-item:hover { background: var(--accent-soft); color: var(--text); }
.sidebar-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

.main-pane {
  padding-top: 28px;
}
.hero {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 32px 24px;
  margin-bottom: 22px;
}
.hero-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 18px; margin-bottom: 14px;
}
.hero h1 {
  font-size: 24px; font-weight: 700; margin: 0;
  letter-spacing: -0.5px; line-height: 1.3;
  display: flex; align-items: baseline; gap: 10px;
}
.hero .heat-flames { color: var(--up); font-size: 16px; letter-spacing: 2px; }
.hero .narrative {
  color: var(--text-2);
  font-size: 14.5px; line-height: 1.85;
}
.hero .narrative .focus {
  background: linear-gradient(180deg, transparent 65%, rgba(31,78,216,.12) 65%);
  font-weight: 600; color: var(--text);
}

.section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 28px;
  margin-bottom: 22px;
}
.section-title {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 16px; font-weight: 700;
  margin: 0 0 14px;
}
.section-title-link {
  font-size: 12px; color: var(--text-3); font-weight: 400;
}

/* core company cards */
.company-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.company-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 14px 12px;
  transition: border-color .12s, box-shadow .12s;
}
.company-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.company-card-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 6px; margin-bottom: 4px;
}
.company-card-name {
  font-size: 15px; font-weight: 700; color: var(--text);
}
.company-card-pct {
  font-size: 13px; font-weight: 700;
}
.company-card.up .company-card-pct { color: var(--up); }
.company-card.down .company-card-pct { color: var(--down); }
.company-card.flat .company-card-pct { color: var(--flat); }
.company-card-code {
  font-size: 11px; color: var(--text-3);
  font-family: -apple-system, ui-monospace, "SF Mono", Menlo, monospace;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.company-card-why {
  font-size: 12.5px; line-height: 1.55;
  color: var(--text-2);
  display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* sources list */
.source-list { display: flex; flex-direction: column; gap: 14px; }
.source-row {
  display: grid;
  grid-template-columns: 110px 1fr 70px;
  gap: 14px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.source-row:last-child { border-bottom: none; padding-bottom: 0; }
.source-meta {
  font-size: 12px; color: var(--text-3); line-height: 1.5;
}
.source-meta .source-org {
  font-weight: 600; color: var(--text-2); font-size: 13px;
}
.source-meta .pill {
  display: inline-block; padding: 1px 7px;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 3px; font-size: 11px; font-weight: 600;
  margin-top: 4px;
}
.source-meta .pill.external { background: #fdecea; color: var(--up); }
.source-body {
  font-size: 14px;
  color: var(--text);
}
.source-body .source-title {
  font-weight: 600; color: var(--text); display: block;
  margin-bottom: 4px; line-height: 1.45;
}
.source-body .source-know-how {
  font-size: 13px; color: var(--text-2); line-height: 1.65;
}
.source-body .source-implications {
  font-size: 12.5px; color: var(--text-3); line-height: 1.6;
  margin-top: 6px;
  padding: 8px 10px;
  background: #fafbfd;
  border-left: 2px solid var(--border-strong);
  border-radius: 0 4px 4px 0;
}
.source-body .source-implications b { color: var(--text-2); }
.source-body .source-tags {
  display: flex; gap: 4px; flex-wrap: wrap; margin-top: 6px;
}
.source-body .tag {
  font-size: 11px; padding: 1px 6px;
  background: #f1f5fb; color: var(--text-3); border-radius: 3px;
}
.source-right {
  text-align: right;
  font-size: 12px; color: var(--text-3);
}
.source-right .deep-link {
  display: inline-block; font-size: 11px;
  padding: 2px 8px; background: #fff;
  border: 1px solid var(--border-strong); border-radius: 3px;
  color: var(--text-2);
}
.source-right .deep-link:hover {
  border-color: var(--accent); color: var(--accent); text-decoration: none;
}

.loading { padding: 60px 0; text-align: center; color: var(--text-3); }
.empty { padding: 32px 0; text-align: center; color: var(--text-3); font-size: 13px; }

/* ========== footer ========== */
.footer {
  max-width: 980px; margin: 0 auto; padding: 24px 24px 40px;
  font-size: 12px; color: var(--text-3); text-align: center;
}