@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,700;1,9..144,300&family=JetBrains+Mono:wght@400;500;600&family=Figtree:wght@400;500;600;700&display=swap');

/* ── Design tokens ── */
:root {
  --bg:        #08090e;
  --surface:   #0f1118;
  --surface-2: #151a24;
  --border:    #1d2235;
  --border-2:  #252c42;
  --text:      #dde1f0;
  --text-dim:  #9098b8;
  --muted:     #515878;
  --accent:    #e8c84a;       /* terminal gold */
  --accent-dim:#e8c84a28;
  --green:     #4ade80;
  --amber:     #fb923c;
  --red:       #f87171;
  --cyan:      #38bdf8;
  --radius:    6px;
  --radius-lg: 10px;
  --font-data: 'JetBrains Mono', monospace;
  --font-body: 'Figtree', sans-serif;
  --font-brand:'Fraunces', serif;
}

/* light mode override */
@media (prefers-color-scheme: light) {
  :root {
    --bg:        #f0f2f8;
    --surface:   #ffffff;
    --surface-2: #f5f7fc;
    --border:    #dce0f0;
    --border-2:  #cdd3e8;
    --text:      #141828;
    --text-dim:  #4a5070;
    --muted:     #8890b0;
    --accent:    #c8a030;
    --accent-dim:#c8a03018;
    --green:     #16a34a;
    --amber:     #ea580c;
    --red:       #dc2626;
    --cyan:      #0284c7;
  }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 13.5px;
  line-height: 1.5;
  /* top accent stripe */
  border-top: 2px solid var(--accent);
}

/* subtle grid texture on body background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
}

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-name {
  font-family: var(--font-brand);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1;
}

.brand-sub {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Freshness badge — pulsing dot */
.freshness-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-data);
  font-size: 11px;
  padding: 4px 11px 4px 9px;
  border-radius: 20px;
  border: 1px solid currentColor;
  cursor: default;
  opacity: 0.9;
  transition: color 0.4s, border-color 0.4s;
}
.freshness-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.freshness-badge.fresh {
  color: var(--green);
}
.freshness-badge.fresh::before {
  animation: pulse-dot 2s ease-in-out infinite;
}
.freshness-badge.stale        { color: var(--amber); }
.freshness-badge.very-stale   { color: var(--red); }
.freshness-badge.unknown      { color: var(--muted); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

/* stale banner */
.stale-banner {
  background: color-mix(in srgb, var(--red) 10%, var(--surface));
  border-left: 3px solid var(--red);
  padding: 9px 20px;
  font-size: 12.5px;
  color: var(--red);
  letter-spacing: 0.01em;
}

/* ── Tab bar ── */
.tab-bar {
  position: sticky;
  top: 52px;
  z-index: 150;
  display: flex;
  gap: 0;
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-bar::-webkit-scrollbar { display: none; }

.tab-bar button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 12px 18px 11px;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: color 0.15s;
  white-space: nowrap;
}
.tab-bar button:hover { color: var(--text-dim); }
.tab-bar button[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── Tab panels ── */
.tab-panel {
  display: none;
  padding: 20px 24px 40px;
  position: relative;
  z-index: 1;
}
.tab-panel.active { display: block; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: 0 1px 3px #00000033, 0 4px 16px #00000022;
}

.card-title {
  font-family: var(--font-data);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 13px 16px 11px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 12px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ── Tables ── */
.card > div { padding: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}

th {
  font-family: var(--font-data);
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  transition: color 0.12s;
}
th:hover { color: var(--text-dim); }

td {
  padding: 9px 14px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  vertical-align: middle;
  transition: background 0.1s;
}
tr:last-child td { border-bottom: none; }
tr:hover td {
  background: color-mix(in srgb, var(--accent) 4%, transparent);
}

/* rank column */
td:first-child {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--muted);
  width: 32px;
  text-align: right;
  padding-right: 6px;
}

/* symbol column bold */
td:nth-child(2) b {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

/* numeric cells */
td:not(:nth-child(2)):not(:first-child):not(:last-child):not(:nth-last-child(2)) {
  font-family: var(--font-data);
  font-size: 12px;
}

/* ── Score bar ── */
.score-bar-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 110px;
}
.score-bar-wrap span {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 600;
  min-width: 30px;
  color: var(--text);
}
.score-bar {
  flex: 1;
  height: 8px;
  background: var(--border-2);
  border-radius: 4px;
  overflow: hidden;
  max-width: 90px;
}
.score-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  /* gradient: dim → gold based on inline width */
  background: linear-gradient(90deg, var(--cyan) 0%, var(--green) 50%, var(--accent) 100%);
  background-size: 200px 100%;
}

/* ── Chips ── */
.chip {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.04em;
}
.chip-green { background: color-mix(in srgb, var(--green) 15%, transparent); color: var(--green); border: 1px solid color-mix(in srgb, var(--green) 30%, transparent); }
.chip-red   { background: color-mix(in srgb, var(--red)   15%, transparent); color: var(--red);   border: 1px solid color-mix(in srgb, var(--red)   30%, transparent); }
.chip-amber { background: color-mix(in srgb, var(--amber) 15%, transparent); color: var(--amber); border: 1px solid color-mix(in srgb, var(--amber) 30%, transparent); }
.chip-gray  { background: color-mix(in srgb, var(--muted) 15%, transparent); color: var(--muted); border: 1px solid color-mix(in srgb, var(--muted) 30%, transparent); }

/* ── AI Research ── */
.ai-entry {
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.ai-entry:last-child { border-bottom: none; }

.ai-entry-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}
.ai-entry-header:hover {
  background: color-mix(in srgb, var(--accent) 5%, transparent);
}
.ai-entry-header b {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.ai-entry-body {
  display: none;
  padding: 16px 20px;
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}
.ai-entry.open .ai-entry-body { display: block; }

.ai-field-label {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 14px;
  margin-bottom: 4px;
}
.ai-field-label:first-child { margin-top: 0; }

/* ── Watchlist table ── */
#panel-watchlist .card td:nth-child(2) { /* last price */
  font-family: var(--font-data);
  font-size: 13px;
}

/* ── History leaderboard ── */
.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 16px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  transition: background 0.1s;
}
.leaderboard-row:last-child { border-bottom: none; }
.leaderboard-row:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }

.lb-rank {
  font-family: var(--font-data);
  font-size: 11px;
  width: 24px;
  color: var(--muted);
  text-align: right;
  flex-shrink: 0;
}
.lb-symbol {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 13px;
  min-width: 64px;
  flex-shrink: 0;
}
.lb-bar {
  flex: 1;
  height: 6px;
  background: var(--border-2);
  border-radius: 3px;
  overflow: hidden;
}
.lb-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--accent));
  border-radius: 3px;
  transition: width 0.5s ease;
}
.lb-count {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--muted);
  min-width: 56px;
  text-align: right;
  flex-shrink: 0;
}

/* ── Alerts feed ── */
.alert-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 9px 16px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  font-size: 12.5px;
  transition: background 0.1s;
}
.alert-row:last-child { border-bottom: none; }
.alert-row:hover { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.alert-ts {
  font-family: var(--font-data);
  color: var(--muted);
  font-size: 10.5px;
  min-width: 130px;
  flex-shrink: 0;
}
.alert-type { min-width: 120px; flex-shrink: 0; }
.alert-symbol {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 13px;
  min-width: 56px;
}
.alert-ctx {
  font-family: var(--font-data);
  color: var(--muted);
  font-size: 11px;
}

/* alert filters */
.filter-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--border);
}
.filter-btn {
  font-family: var(--font-data);
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border-2);
  background: none;
  color: var(--muted);
  cursor: pointer;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all 0.12s;
}
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Empty & error states ── */
.empty-state {
  color: var(--muted);
  text-align: center;
  padding: 56px 0;
  font-size: 13px;
  font-family: var(--font-data);
  letter-spacing: 0.02em;
}

.error-banner {
  background: color-mix(in srgb, var(--red) 10%, var(--surface));
  border-left: 3px solid var(--red);
  padding: 14px 24px;
  margin: 16px 24px;
  color: var(--red);
  font-size: 13px;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.error-banner button {
  margin-top: 10px;
  padding: 6px 16px;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
}

/* ── Footer ── */
footer {
  position: relative;
  z-index: 1;
  padding: 20px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font-data);
  letter-spacing: 0.04em;
  border-top: 1px solid var(--border);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ── Responsive ── */
@media (max-width: 680px) {
  body { font-size: 13px; }
  header { padding: 0 14px; }
  .tab-panel { padding: 14px 14px 32px; }
  .tab-bar { padding: 0 8px; }
  td, th { padding: 7px 8px; }
  .score-bar { display: none; }
}