/* ── Semiconductor Research — v2 ────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fafbfc;
  --bg-warm: #f5f3f0;
  --card: #ffffff;
  --card-hover: #f8f9fb;
  --card-border: #e8e8ec;
  --card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --card-shadow-lg: 0 4px 12px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --text: #1a1a2e;
  --text-secondary: #4a4a68;
  --text-muted: #8b8ba3;
  --text-dim: #b0b0c4;
  --accent: #2563eb;
  --accent-light: #eff4ff;
  --green: #059669;
  --green-light: #ecfdf5;
  --green-bg: #d1fae5;
  --red: #dc2626;
  --red-light: #fef2f2;
  --red-bg: #fee2e2;
  --amber: #d97706;
  --amber-light: #fffbeb;
  --amber-bg: #fef3c7;
  --navy: #1e3a5f;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --transition: 0.18s ease;
}

html { font-size: 15px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ── Navigation ─────────────────────────────────── */
#nav {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--card-border);
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}
.nav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 28px; height: 52px;
  display: flex; align-items: center; gap: 28px;
}
.nav-brand {
  font-weight: 750; font-size: 0.92rem;
  color: var(--text); letter-spacing: -0.03em;
  white-space: nowrap;
}
.nav-brand:hover { text-decoration: none; color: var(--accent); }
.nav-links { display: flex; gap: 2px; flex: 1; }
.nav-link {
  padding: 6px 14px; border-radius: var(--radius-xs);
  font-size: 0.82rem; font-weight: 550;
  color: var(--text-muted); transition: all var(--transition);
  letter-spacing: -0.01em;
}
.nav-link:hover { color: var(--text); background: var(--bg); text-decoration: none; }
.nav-link.active { color: var(--accent); background: var(--accent-light); }
.nav-meta { display: flex; align-items: center; gap: 10px; }
.meta-text {
  font-size: 0.72rem; color: var(--text-dim);
  font-family: var(--mono); letter-spacing: -0.02em;
}
.btn-refresh {
  padding: 5px 14px; border-radius: var(--radius-xs);
  background: var(--bg); border: 1px solid var(--card-border);
  color: var(--text-muted); font-size: 0.78rem; cursor: pointer;
  font-weight: 550; font-family: var(--font);
  transition: all var(--transition);
}
.btn-refresh:hover { background: var(--card); color: var(--text); box-shadow: var(--card-shadow); }

/* ── Main Layout ────────────────────────────────── */
#app {
  max-width: 1280px; margin: 0 auto;
  padding: 28px 28px 60px;
}
.loading-state {
  text-align: center; padding: 100px 20px;
  color: var(--text-dim); font-size: 1rem;
}

/* ── Page Header ────────────────────────────────── */
.page-header { margin-bottom: 32px; }
.page-header h1 {
  font-size: 1.65rem; font-weight: 750;
  letter-spacing: -0.03em; margin-bottom: 4px;
  color: var(--text);
}
.page-header .subtitle {
  font-size: 0.88rem; color: var(--text-muted);
  line-height: 1.5; max-width: 640px;
}

/* ── Hero / Status ──────────────────────────────── */
.hero-status {
  display: flex; align-items: stretch; gap: 16px;
  margin-bottom: 32px;
}
.hero-status-main {
  flex: 1; padding: 24px 28px;
  background: var(--card); border-radius: var(--radius);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  display: flex; flex-direction: column; justify-content: center;
}
.hero-status-main .scenario-label {
  font-size: 0.72rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.06em;
  font-weight: 650; margin-bottom: 8px;
}
.hero-status-main h2 {
  font-size: 1.25rem; font-weight: 700;
  letter-spacing: -0.02em; margin-bottom: 4px;
}
.hero-status-main .status-subtitle {
  font-size: 0.85rem; color: var(--text-secondary);
}

.hero-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; min-width: 340px;
}
.hero-metric {
  background: var(--card); border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  padding: 14px 16px; text-align: center;
}
.hero-metric .hm-value {
  font-size: 1.35rem; font-weight: 750;
  font-family: var(--mono); letter-spacing: -0.03em;
  line-height: 1.2;
}
.hero-metric .hm-label {
  font-size: 0.68rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.04em;
  font-weight: 600; margin-top: 2px;
}
.hero-metric .hm-value.critical { color: var(--red); }
.hero-metric .hm-value.warning { color: var(--amber); }
.hero-metric .hm-value.ok { color: var(--green); }

/* ── Section ────────────────────────────────────── */
.section { margin-bottom: 40px; }
.section-head {
  display: flex; align-items: baseline; gap: 10px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 1.05rem; font-weight: 700;
  letter-spacing: -0.02em; color: var(--text);
}
.section-head .kicker {
  font-size: 0.68rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.06em;
  font-weight: 650;
  background: var(--bg);
  padding: 2px 8px; border-radius: var(--radius-xs);
}
.section-head .count {
  font-size: 0.72rem; color: var(--text-dim);
  margin-left: auto; font-family: var(--mono);
}
.section-head .see-all {
  font-size: 0.8rem; font-weight: 550;
  margin-left: auto;
}

/* ── Signal Cards (hero feature) ────────────────── */
.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 14px;
}
.signal-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--card-shadow);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
}
.signal-card:hover {
  box-shadow: var(--card-shadow-lg);
  transform: translateY(-1px);
}
.signal-card::before {
  content: ''; position: absolute;
  left: 0; top: 0; bottom: 0; width: 4px;
}
.signal-card.bullish::before { background: var(--green); }
.signal-card.risk::before { background: var(--red); }
.signal-card.neutral::before { background: var(--amber); }

.signal-card .signal-header {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 12px;
}
.signal-card .signal-type {
  font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 10px; border-radius: 20px;
}
.signal-card.bullish .signal-type { background: var(--green-bg); color: var(--green); }
.signal-card.risk .signal-type { background: var(--red-bg); color: var(--red); }
.signal-card.neutral .signal-type { background: var(--amber-bg); color: var(--amber); }
.signal-card .signal-category {
  font-size: 0.68rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.03em;
  font-weight: 550;
}

.signal-card .signal-ticker {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-weight: 700;
  font-size: 0.82rem; padding: 2px 10px;
  border-radius: var(--radius-xs);
  background: var(--accent-light); color: var(--accent);
  margin-bottom: 10px;
}
.signal-card .signal-ticker a { color: inherit; }

.signal-card .signal-headline {
  font-size: 0.92rem; font-weight: 600;
  line-height: 1.45; margin-bottom: 12px;
  color: var(--text);
}

.signal-card .evidence-list {
  list-style: none; padding: 0; margin: 0;
  border-top: 1px solid var(--card-border);
  padding-top: 10px;
}
.signal-card .evidence-list li {
  font-size: 0.78rem; color: var(--text-secondary);
  padding: 3px 0 3px 16px; position: relative;
  line-height: 1.5;
}
.signal-card .evidence-list li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--text-dim);
}

.signal-card .signal-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 12px; padding-top: 8px;
  border-top: 1px solid var(--card-border);
}
.signal-card .signal-confidence {
  font-size: 0.7rem; color: var(--text-dim);
  font-family: var(--mono); font-weight: 550;
}

/* ── Confidence Bar ─────────────────────────────── */
.conf-bar {
  display: flex; align-items: center; gap: 6px;
}
.conf-bar-track {
  width: 48px; height: 4px; border-radius: 2px;
  background: var(--card-border); overflow: hidden;
}
.conf-bar-fill { height: 100%; border-radius: 2px; }
.conf-bar-fill.high { background: var(--green); }
.conf-bar-fill.mid { background: var(--amber); }
.conf-bar-fill.low { background: var(--red); }

/* ── Filter Bar ─────────────────────────────────── */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 16px;
}
.filter-btn {
  padding: 5px 16px; border-radius: 20px;
  background: var(--card); border: 1px solid var(--card-border);
  color: var(--text-muted); font-size: 0.76rem; cursor: pointer;
  font-weight: 550; font-family: var(--font);
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── Tier Cards ─────────────────────────────────── */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.tier-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 16px 18px;
  box-shadow: var(--card-shadow);
}
.tier-card .tier-label {
  font-size: 0.78rem; font-weight: 650; margin-bottom: 8px;
  color: var(--text);
}
.tier-card .tier-status-badge {
  display: inline-block; font-size: 0.65rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 2px 10px; border-radius: 20px;
}
.tier-card.critical .tier-status-badge { background: var(--red-bg); color: var(--red); }
.tier-card.warning .tier-status-badge { background: var(--amber-bg); color: var(--amber); }
.tier-card.normal .tier-status-badge { background: var(--green-bg); color: var(--green); }
.tier-card .tier-meta {
  font-size: 0.72rem; color: var(--text-dim);
  margin-top: 10px; font-family: var(--mono);
  line-height: 1.6;
}
.tier-card .tier-explanation {
  font-size: 0.75rem; color: var(--text-muted);
  margin-top: 8px; line-height: 1.45;
  display: none; /* collapsed by default */
}
.tier-card.expanded .tier-explanation { display: block; }
.tier-toggle {
  font-size: 0.7rem; color: var(--accent);
  cursor: pointer; margin-top: 6px;
  font-weight: 550; border: 0; background: 0;
  font-family: var(--font); padding: 0;
}

/* ── Alert Rows ─────────────────────────────────── */
.alert-list { display: flex; flex-direction: column; gap: 6px; }
.alert-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; background: var(--card);
  border: 1px solid var(--card-border); border-radius: var(--radius-sm);
  box-shadow: var(--card-shadow);
}
.alert-row .alert-severity {
  font-size: 0.62rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 2px 10px; border-radius: 20px; flex-shrink: 0;
}
.alert-row.HIGH .alert-severity { background: var(--red-bg); color: var(--red); }
.alert-row.MEDIUM .alert-severity { background: var(--amber-bg); color: var(--amber); }
.alert-row.LOW .alert-severity { background: var(--bg); color: var(--text-dim); }
.alert-row .alert-title {
  font-size: 0.82rem; font-weight: 600; color: var(--text); flex: 1;
  min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.alert-row .alert-desc {
  font-size: 0.78rem; color: var(--text-muted); flex: 2;
  min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.alert-row .alert-time {
  font-size: 0.68rem; color: var(--text-dim);
  font-family: var(--mono); flex-shrink: 0;
}

/* ── Equity Table ───────────────────────────────── */
.table-wrapper {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); box-shadow: var(--card-shadow);
  overflow: hidden;
}
.equity-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.82rem;
}
.equity-table th {
  text-align: left; padding: 12px 16px;
  font-size: 0.68rem; font-weight: 650;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-dim); background: var(--bg);
  border-bottom: 1px solid var(--card-border);
  position: sticky; top: 0;
}
.equity-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--card-border);
  vertical-align: middle;
}
.equity-table tbody tr { transition: background var(--transition); }
.equity-table tbody tr:hover td { background: var(--card-hover); }
.equity-table tbody tr:last-child td { border-bottom: 0; }
.equity-table .ticker {
  font-family: var(--mono); font-weight: 700;
  color: var(--accent); cursor: pointer;
  font-size: 0.82rem;
}
.equity-table .ticker:hover { text-decoration: underline; }
.equity-table .price { font-family: var(--mono); text-align: right; font-weight: 550; }
.equity-table .change { font-family: var(--mono); text-align: right; font-weight: 600; }
.equity-table .change.up { color: var(--green); }
.equity-table .change.down { color: var(--red); }

.exposure-badge {
  font-size: 0.65rem; font-weight: 650;
  padding: 2px 10px; border-radius: 20px;
  text-transform: uppercase; letter-spacing: 0.02em;
  display: inline-block;
}
.exposure-badge.Critical { background: var(--red-bg); color: var(--red); }
.exposure-badge.High { background: var(--amber-bg); color: var(--amber); }
.exposure-badge.Medium { background: var(--accent-light); color: var(--accent); }
.exposure-badge.Low { background: var(--green-bg); color: var(--green); }

/* ── News ───────────────────────────────────────── */
.news-list { display: flex; flex-direction: column; gap: 4px; }
.news-item {
  display: flex; align-items: baseline; gap: 12px;
  padding: 10px 16px; border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.news-item:hover { background: var(--card); }
.news-item .news-source {
  font-size: 0.66rem; color: var(--text-dim);
  font-weight: 650; text-transform: uppercase;
  flex-shrink: 0; min-width: 90px;
  letter-spacing: 0.02em;
}
.news-item .news-title {
  font-size: 0.82rem; flex: 1;
  color: var(--text); line-height: 1.4;
}
.news-item .news-title:hover { color: var(--accent); }
.news-item .news-time {
  font-size: 0.68rem; color: var(--text-dim);
  font-family: var(--mono); flex-shrink: 0;
}

/* ── Commodity Grid ─────────────────────────────── */
.commodity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.commodity-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  cursor: pointer; transition: all var(--transition);
  box-shadow: var(--card-shadow);
}
.commodity-card:hover { box-shadow: var(--card-shadow-lg); transform: translateY(-1px); }
.commodity-card .cm-name {
  font-size: 0.75rem; color: var(--text-muted);
  margin-bottom: 6px; font-weight: 550;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.commodity-card .cm-price-row {
  display: flex; align-items: baseline; gap: 8px;
}
.commodity-card .cm-price {
  font-size: 1.1rem; font-weight: 700;
  font-family: var(--mono); letter-spacing: -0.02em;
}
.commodity-card .cm-change {
  font-size: 0.78rem; font-family: var(--mono); font-weight: 600;
}
.commodity-card .cm-change.up { color: var(--green); }
.commodity-card .cm-change.down { color: var(--red); }
.commodity-card .cm-change.flat { color: var(--text-dim); }
.commodity-card .cm-meta {
  font-size: 0.65rem; color: var(--text-dim);
  margin-top: 6px; display: flex; gap: 6px;
}
.cm-tag {
  padding: 1px 6px; border-radius: 3px;
  background: var(--bg); font-weight: 550;
}
.cm-tag.live { color: var(--green); }
.cm-tag.proxy { color: var(--amber); }
.cm-tag.simulated { color: var(--text-dim); }

/* ── Collapsible ────────────────────────────────── */
.collapsible-header {
  display: flex; align-items: center; gap: 10px;
  cursor: pointer; user-select: none;
  padding: 10px 0;
}
.collapsible-header .chevron {
  font-size: 0.7rem; color: var(--text-dim);
  transition: transform var(--transition);
}
.collapsible-header.open .chevron { transform: rotate(90deg); }
.collapsible-body { display: none; }
.collapsible-body.open { display: block; }

/* ── GPU Supply Chain ───────────────────────────── */
.layer-section {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 22px 24px;
  box-shadow: var(--card-shadow); margin-bottom: 16px;
}
.layer-header { margin-bottom: 14px; }
.layer-header h3 {
  font-size: 0.95rem; font-weight: 700;
  letter-spacing: -0.01em;
}
.layer-header .layer-desc {
  font-size: 0.8rem; color: var(--text-muted); margin-top: 2px;
}
.layer-items {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-bottom: 12px;
}
.layer-item {
  padding: 4px 12px; border-radius: 20px;
  background: var(--bg); border: 1px solid var(--card-border);
  font-size: 0.75rem; color: var(--text-secondary);
  font-weight: 500;
}
.company-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.company-chip {
  padding: 4px 14px; border-radius: var(--radius-xs);
  background: var(--accent-light); border: 1px solid transparent;
  font-size: 0.75rem; cursor: pointer; color: var(--accent);
  font-weight: 550; transition: all var(--transition);
}
.company-chip:hover { background: var(--accent); color: #fff; }

.basket-section {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 18px 22px;
  box-shadow: var(--card-shadow); margin-bottom: 12px;
}
.basket-header h4 { font-size: 0.88rem; font-weight: 650; }
.basket-header .basket-desc { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }
.basket-symbols { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.basket-symbol {
  padding: 4px 12px; border-radius: var(--radius-xs);
  font-size: 0.72rem; font-family: var(--mono); font-weight: 550;
  background: var(--bg); border: 1px solid var(--card-border);
  cursor: pointer; color: var(--text-secondary);
  transition: all var(--transition);
}
.basket-symbol:hover { border-color: var(--accent); color: var(--accent); }
.basket-symbol.missing { opacity: 0.35; border-style: dashed; cursor: default; }

/* ── Company/Commodity Detail ───────────────────── */
.detail-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-bottom: 24px;
}
.detail-panel {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 22px 24px;
  box-shadow: var(--card-shadow);
}
.detail-panel h3 {
  font-size: 0.88rem; font-weight: 700;
  margin-bottom: 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--card-border);
  color: var(--text);
}
.detail-row {
  display: flex; justify-content: space-between;
  padding: 6px 0; font-size: 0.82rem;
}
.detail-row .dl { color: var(--text-muted); }
.detail-row .dv { font-family: var(--mono); font-weight: 600; color: var(--text); }
.detail-row .dv.up { color: var(--green); }
.detail-row .dv.down { color: var(--red); }

.transcript-bars { margin-top: 10px; }
.tbar-row {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 8px;
}
.tbar-label { font-size: 0.75rem; color: var(--text-muted); min-width: 90px; font-weight: 550; }
.tbar-track {
  flex: 1; height: 6px; background: var(--bg);
  border-radius: 3px; overflow: hidden;
}
.tbar-fill {
  height: 100%; border-radius: 3px;
  background: var(--accent); transition: width 0.4s ease;
}
.tbar-val {
  font-size: 0.7rem; font-family: var(--mono);
  color: var(--text-dim); min-width: 36px; text-align: right;
}

.back-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-bottom: 16px; font-size: 0.82rem; color: var(--text-muted);
  font-weight: 550;
}
.back-link:hover { color: var(--accent); text-decoration: none; }

/* ── Role Card ──────────────────────────────────── */
.role-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.role-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-sm); padding: 16px 18px;
  box-shadow: var(--card-shadow);
}
.role-card .role-name {
  font-size: 0.78rem; font-weight: 650;
  color: var(--text); margin-bottom: 10px;
  letter-spacing: -0.01em;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 860px) {
  .hero-status { flex-direction: column; }
  .hero-metrics { min-width: unset; grid-template-columns: repeat(3, 1fr); }
  .signal-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-inner { padding: 0 14px; gap: 10px; }
  .nav-links { overflow-x: auto; gap: 2px; }
  .nav-link { padding: 6px 10px; font-size: 0.78rem; white-space: nowrap; }
  .nav-meta { display: none; }
  #app { padding: 16px 14px 40px; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .tier-grid { grid-template-columns: repeat(2, 1fr); }
  .commodity-grid { grid-template-columns: repeat(2, 1fr); }
  .alert-row { flex-direction: column; align-items: flex-start; gap: 4px; }
  .alert-row .alert-desc { white-space: normal; }
  .news-item { flex-direction: column; gap: 2px; }
  .role-grid { grid-template-columns: 1fr; }
}