/* ══════════════════════════════════════════════════
   TAIWAN 外資分點狙擊分析 — GitHub Pages 樣式
   設計：深色金融儀表板 × 台股紅綠配色
   RWD：≥1100px / 768px / 480px 三段式響應
   ══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;600&family=Noto+Sans+TC:wght@400;500;700;900&display=swap');

/* ── CSS Variables ──────────────────────────────── */
:root {
  --bg-base:      #0B1120;
  --bg-card:      #111827;
  --bg-card2:     #1A2333;
  --bg-row-alt:   #141E2E;
  --bg-today:     #1C2A16;

  --border:       rgba(255,255,255,.08);
  --border-light: rgba(255,255,255,.05);

  --text-primary:   #E8EDF5;
  --text-secondary: #8A9BB5;
  --text-muted:     #4E5E78;

  --accent-blue:  #3B82F6;
  --accent-blue2: #1D4ED8;
  --accent-sky:   #7DD3FC;

  --pos:   #F87171;   /* 台股紅（漲）*/
  --neg:   #4ADE80;   /* 台股綠（跌）*/
  --neu:   #94A3B8;

  --gold:   #F59E0B;
  --gold2:  #FCD34D;
  --purple: #A78BFA;
  --teal:   #2DD4BF;
  --red2:   #EF4444;

  --font-body: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius:  8px;
  --radius2: 4px;
  --shadow:  0 4px 24px rgba(0,0,0,.45);
  --shadow2: 0 2px 8px  rgba(0,0,0,.30);
}

/* ── Reset ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }

/* ── Layout ──────────────────────────────────────── */
.page-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 60px;
}

/* ── Sticky Header ───────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,17,32,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.header-brand { display: flex; align-items: center; gap: 10px; }
.header-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--accent-blue2), var(--accent-blue));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.header-title {
  font-size: 15px; font-weight: 700;
  color: var(--text-primary); letter-spacing: .3px;
}
.header-meta {
  font-size: 11.5px; color: var(--text-muted);
  font-family: var(--font-mono);
}
.status-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600;
}
.status-pill.ok  { background: rgba(74,222,128,.12); color: var(--neg); border: 1px solid rgba(74,222,128,.25); }
.status-pill.err { background: rgba(248,113,113,.12); color: var(--pos); border: 1px solid rgba(248,113,113,.25); }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ── Hero ────────────────────────────────────────── */
.report-hero {
  margin-top: 24px;
  background: linear-gradient(135deg, #0D1F3C 0%, #152847 50%, #0D1F3C 100%);
  border: 1px solid rgba(59,130,246,.25);
  border-radius: var(--radius);
  padding: 28px 28px 22px;
  position: relative; overflow: hidden;
}
.report-hero::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(59,130,246,.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-date {
  font-size: 11px; font-family: var(--font-mono);
  color: var(--accent-sky); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 8px;
}
.hero-title {
  font-size: clamp(20px, 4vw, 28px);
  font-weight: 900; line-height: 1.2;
  color: #fff; margin-bottom: 16px;
}
.hero-stats { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-stat {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 6px 12px;
  font-size: 11.5px;
  color: var(--text-secondary);
}
.hero-stat strong { color: var(--text-primary); }

/* ── Tabs ────────────────────────────────────────── */
.nav-tabs {
  display: flex; gap: 4px;
  padding: 16px 0 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  padding: 8px 16px;
  font-size: 13px; font-weight: 600;
  color: var(--text-muted);
  background: transparent; border: none;
  cursor: pointer;
  border-radius: var(--radius2) var(--radius2) 0 0;
  white-space: nowrap;
  transition: color .2s, background .2s;
  position: relative;
}
.nav-tab::after {
  content: ''; position: absolute;
  bottom: -1px; left: 0; right: 0; height: 2px;
  background: transparent; transition: background .2s;
}
.nav-tab:hover { color: var(--text-secondary); }
.nav-tab.active { color: var(--accent-blue); }
.nav-tab.active::after { background: var(--accent-blue); }

.tab-panel { display: none; padding-top: 20px; }
.tab-panel.active { display: block; animation: fadeIn .25s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ── Section Header ──────────────────────────────── */
.section-hdr {
  display: flex; align-items: center; gap: 10px;
  margin: 24px 0 12px;
}
.section-hdr-bar {
  width: 4px; height: 20px;
  border-radius: 2px;
  background: var(--accent-blue);
  flex-shrink: 0;
}
.section-hdr h2 {
  font-size: 15px; font-weight: 700;
  color: var(--text-primary);
}
.section-hdr .sub {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-left: 4px;
}

/* ── Tables ──────────────────────────────────────── */
.tbl-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  overflow-x: auto;
}
table {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}
thead th {
  background: var(--bg-card2);
  color: var(--text-secondary);
  font-size: 11px; font-weight: 600;
  letter-spacing: .5px; text-transform: uppercase;
  padding: 10px 14px; text-align: right;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
thead th:first-child { text-align: left; }
tbody tr {
  border-bottom: 1px solid var(--border-light);
  transition: background .15s;
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,.03); }
tbody tr.today { background: var(--bg-today) !important; }
tbody td {
  padding: 9px 14px; text-align: right;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}
tbody td:first-child { text-align: left; }
.tbl-foot {
  padding: 7px 14px;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  background: rgba(0,0,0,.15);
}
tr.cum-row td {
  background: rgba(59,130,246,.08);
  border-top: 1px solid rgba(59,130,246,.3) !important;
  font-weight: 700;
  font-size: 12.5px;
}

/* ── Number colors ───────────────────────────────── */
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.neu { color: var(--neu); }
.arrow { font-size: 9px; margin-left: 2px; }

/* ── Date cell ───────────────────────────────────── */
.date-cell { font-family: var(--font-mono); font-size: 12px; }
.badge-new {
  display: inline-block;
  padding: 1px 6px;
  background: rgba(59,130,246,.2);
  color: var(--accent-sky);
  border-radius: 3px;
  font-size: 10px; font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}

/* ── Badges ──────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 3px;
  font-size: 10.5px; font-weight: 700;
}
.badge-buy  { background: rgba(248,113,113,.15); color: var(--pos); }
.badge-sell { background: rgba(74,222,128,.12);  color: var(--neg); }
.badge-neu  { background: rgba(148,163,184,.1);  color: var(--neu); }

/* ── Volume bar ──────────────────────────────────── */
.vol-bar {
  display: inline-block;
  height: 6px; border-radius: 3px;
  vertical-align: middle;
  margin-left: 5px;
  opacity: .7;
}

/* ── Broker card ─────────────────────────────────── */
.broker-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
.broker-hdr {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.broker-rank {
  font-size: 18px;
  width: 28px;
  flex-shrink: 0;
  text-align: center;
}
.broker-name {
  font-size: 14px; font-weight: 700;
  color: var(--text-primary);
  flex: 1;
}
.broker-net {
  font-size: 13px; font-weight: 700;
  font-family: var(--font-mono);
  text-align: right;
}
.broker-net .label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 400;
  margin-right: 4px;
}

/* ── Bias badge ──────────────────────────────────── */
.bias-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px; font-weight: 700;
  font-family: var(--font-mono);
}
.bias-rh { background: rgba(185,28,28,.2);   color: #FCA5A5; }
.bias-r  { background: rgba(248,113,113,.12); color: var(--pos); }
.bias-n  { background: rgba(148,163,184,.08); color: var(--neu); }
.bias-g  { background: rgba(74,222,128,.1);   color: var(--neg); }
.bias-gh { background: rgba(21,128,61,.2);    color: #86EFAC; }

/* ── AI sections ─────────────────────────────────── */
.ai-section {
  margin-bottom: 14px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.ai-sec-hdr {
  display: flex; align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 14.5px; font-weight: 700;
  color: #fff;
  cursor: pointer;
  user-select: none;
}
.ai-sec-hdr .letter {
  font-family: var(--font-mono);
  font-size: 11px;
  width: 22px; height: 22px;
  border-radius: 4px;
  background: rgba(255,255,255,.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ai-sec-hdr .chevron {
  margin-left: auto;
  font-size: 11px;
  color: rgba(255,255,255,.4);
  transition: transform .25s;
}
.ai-section.open .chevron { transform: rotate(180deg); }
.ai-sec-body {
  padding: 14px 16px 16px;
  font-size: 13.5px; line-height: 1.9;
  color: var(--text-primary);
  background: var(--bg-card);
  display: none;
}
.ai-section.open .ai-sec-body { display: block; }

.ai-A .ai-sec-hdr { background: #1A4B7A; }
.ai-B .ai-sec-hdr { background: #7D5A00; }
.ai-C .ai-sec-hdr { background: #145A32; }
.ai-D .ai-sec-hdr { background: #7B241C; }
.ai-F .ai-sec-hdr { background: #1A4B7A; }

.ai-item {
  display: flex; gap: 10px;
  margin: 8px 0;
  padding: 8px 12px;
  background: rgba(255,255,255,.03);
  border-left: 2px solid rgba(255,255,255,.1);
  border-radius: 0 4px 4px 0;
  font-size: 13px;
}
.ai-item-num {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent-blue2);
  color: #fff;
  font-size: 10px; font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.ai-sub {
  padding: 3px 12px 3px 28px;
  font-size: 12.5px;
  color: var(--text-secondary);
  border-left: 1px solid var(--border);
  margin: 3px 0 3px 10px;
}
.ai-sec-body strong, .ai-sec-body b { font-weight: 700; color: var(--text-primary); }
.ai-sec-body em { font-style: italic; color: var(--accent-sky); }

/* ── Empty state ─────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 13px;
}
.empty-state .icon { font-size: 32px; margin-bottom: 10px; }

/* ── Footer ──────────────────────────────────────── */
.site-footer {
  margin-top: 48px;
  padding: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.8;
}
.disclaimer {
  margin-top: 12px;
  padding: 12px 16px;
  background: rgba(245,158,11,.05);
  border: 1px solid rgba(245,158,11,.15);
  border-radius: var(--radius2);
  font-size: 11px;
  color: #92710A;
  text-align: left;
  max-width: 700px;
  margin-left: auto; margin-right: auto;
}

/* ── Back-to-top ─────────────────────────────────── */
#back-top {
  position: fixed; bottom: 20px; right: 20px;
  width: 38px; height: 38px;
  background: var(--accent-blue2);
  color: #fff;
  border: none; border-radius: 50%;
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow2);
  opacity: 0; transform: translateY(10px);
  transition: opacity .25s, transform .25s;
  z-index: 99;
}
#back-top.visible { opacity: 1; transform: translateY(0); }

/* ── Skeleton ────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card2) 25%, #1E2D42 50%, var(--bg-card2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  display: inline-block;
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

/* ══ Responsive ═══════════════════════════════════ */

/* Tablet ≤ 768px */
@media (max-width: 768px) {
  .page-wrapper { padding: 0 12px 48px; }
  .site-header { padding: 10px 14px; }
  .header-title { font-size: 13px; }
  .report-hero { padding: 20px 16px 16px; }
  .hero-title { font-size: 18px; }
  table { font-size: 12px; }
  thead th, tbody td { padding: 8px 10px; }
  .broker-name { font-size: 13px; }
  .nav-tab { padding: 7px 12px; font-size: 12px; }
}

/* Mobile ≤ 480px */
@media (max-width: 480px) {
  .page-wrapper { padding: 0 8px 40px; }
  .report-hero { padding: 16px 14px 14px; }
  .hero-title { font-size: 16px; }
  .hero-stat { font-size: 10.5px; padding: 4px 8px; }
  table { font-size: 11.5px; }
  thead th, tbody td { padding: 7px 8px; }
  .broker-hdr { flex-wrap: wrap; gap: 8px; }
  .broker-net { width: 100%; text-align: left; padding-left: 36px; }
  .ai-sec-hdr { font-size: 13.5px; padding: 10px 14px; }
  .ai-sec-body { padding: 12px 14px; }
  .nav-tab { padding: 6px 10px; font-size: 11.5px; }
  #back-top { bottom: 14px; right: 14px; width: 34px; height: 34px; }
}

/* Wide ≥ 1100px — 兩欄佈局 */
@media (min-width: 1100px) {
  .two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
}