/* ============================================================
   PULSE design system — "the living trend engine"
   Dark organism aesthetic · zero frameworks · zero font requests
   ============================================================ */

:root {
  --bg:        #070b14;
  --bg-2:      #0b1120;
  --surface:   rgba(148, 163, 195, .055);
  --surface-2: rgba(148, 163, 195, .09);
  --border:    rgba(148, 163, 195, .14);
  --text:      #e7ecf8;
  --text-dim:  #94a3c3;
  --cyan:      #22d3ee;
  --violet:    #a78bfa;
  --pink:      #f472b6;
  --green:     #34d399;
  --amber:     #fbbf24;
  --red:       #f87171;
  --grad:      linear-gradient(90deg, var(--cyan), var(--violet), var(--pink));
  --radius:    14px;
  --font:      ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:      ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(167, 139, 250, .10), transparent 60%),
    radial-gradient(900px 420px at 10% -5%, rgba(34, 211, 238, .09), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--text-dim); font-size: .86rem; }
.up   { color: var(--green); }
.down { color: var(--red); }
code { font-family: var(--mono); font-size: .85em; background: var(--surface-2); padding: 2px 7px; border-radius: 6px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 99; background: var(--bg-2); padding: 8px 14px; border-radius: 8px; }

/* ---------- masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 20, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.masthead-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; }
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-ekg { align-self: center; animation: ekg-glow 2.4s ease-in-out infinite; }
@keyframes ekg-glow { 0%,100% { filter: drop-shadow(0 0 2px rgba(34,211,238,.4)); } 50% { filter: drop-shadow(0 0 9px rgba(244,114,182,.7)); } }
.brand-name { font-weight: 800; font-size: 1.3rem; letter-spacing: .14em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-tag { color: var(--text-dim); font-size: .78rem; display: none; }
@media (min-width: 720px) { .brand-tag { display: inline; } }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--text-dim); padding: 7px 11px; border-radius: 9px; font-size: .92rem; }
.nav a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }

/* ticker */
.ticker { overflow: hidden; border-top: 1px solid var(--border); background: rgba(11, 17, 32, .6); height: 34px; }
.ticker:empty { display: none; }
.ticker-track { display: inline-flex; gap: 38px; white-space: nowrap; padding: 6px 0; will-change: transform; animation: tick 60s linear infinite; }
.ticker-track:hover { animation-play-state: paused; }
@keyframes tick { from { transform: translateX(100vw); } to { transform: translateX(-100%); } }
.ticker-track a { color: var(--text-dim); font-size: .84rem; }
.ticker-track a b { color: var(--text); font-weight: 600; }
.tick-up { color: var(--green); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 26px; }
.hero-sm { padding: 38px 0 14px; }
.hero-title { font-size: clamp(1.9rem, 5vw, 3.1rem); line-height: 1.12; margin: 0 0 14px; font-weight: 800; letter-spacing: -.02em; }
.hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin: 0 0 10px; letter-spacing: -.02em; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { color: var(--text-dim); font-size: 1.06rem; max-width: 640px; margin: 0; }

/* ---------- organism panel ---------- */
.organism {
  margin: 26px 0 8px; padding: 20px 22px;
  background: linear-gradient(180deg, rgba(34, 211, 238, .05), rgba(167, 139, 250, .04));
  border: 1px solid var(--border); border-radius: var(--radius);
}
.organism-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.organism-head h2 { margin: 0; font-size: 1rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); }
.organism-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); animation: heartbeat 1.6s ease-in-out infinite; }
@keyframes heartbeat { 0%,100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, .55); } 50% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); } }
.organism-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; }
.vital-n { display: block; font-size: 1.55rem; font-weight: 800; font-variant-numeric: tabular-nums; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.vital-l { color: var(--text-dim); font-size: .8rem; }

/* ---------- board / grid / cards ---------- */
.board-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin: 30px 0 16px; }
.board-head h2 { margin: 0; font-size: 1.3rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 16px; }
.grid-tight { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; display: flex; flex-direction: column; gap: 10px;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(34, 211, 238, .4); background: var(--surface-2); }
.card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.rank { font-family: var(--mono); color: var(--text-dim); font-size: .8rem; }
.card-title { margin: 0; font-size: 1.05rem; line-height: 1.35; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--cyan); text-decoration: none; }
.card-hook { margin: 0; color: var(--text-dim); font-size: .9rem; }
.card-meta { display: flex; gap: 14px; flex-wrap: wrap; color: var(--text-dim); font-size: .82rem; font-variant-numeric: tabular-nums; }
.card-spark { display: flex; align-items: center; gap: 10px; margin-top: auto; }
.spark-delta { font-size: .82rem; font-weight: 700; font-variant-numeric: tabular-nums; }

/* badges + chips */
.badge { font-size: .76rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; letter-spacing: .03em; }
.st-rising   { background: rgba(52, 211, 153, .14); color: var(--green); }
.st-peaking  { background: rgba(251, 191, 36, .14); color: var(--amber); }
.st-cooling  { background: rgba(148, 163, 195, .14); color: var(--text-dim); }
.st-archived { background: rgba(148, 163, 195, .10); color: var(--text-dim); }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .78rem; color: var(--text-dim);
  background: var(--surface-2); border: 1px solid transparent; border-radius: 999px;
  padding: 3px 11px; cursor: pointer; font-family: var(--font);
}
a.chip:hover, button.chip:hover { color: var(--text); border-color: var(--border); text-decoration: none; }
.chip.is-active { background: var(--grad); color: #081019; font-weight: 700; }
.chip-n { font-family: var(--mono); font-size: .72rem; opacity: .75; }
.chip-pred { color: var(--violet); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chips-cloud { padding: 10px 0 30px; }
.chips-cloud .chip { font-size: .9rem; padding: 6px 14px; }

/* sparklines */
.spark-line { stroke: var(--cyan); stroke-width: 2; }
.spark-area { fill: rgba(34, 211, 238, .12); }
.spark-dot  { fill: var(--pink); }
.spark-big .spark-line { stroke-width: 2.5; }

/* ---------- trend page ---------- */
.crumbs { padding: 22px 0 0; color: var(--text-dim); font-size: .85rem; }
.trend-head { padding: 18px 0 8px; }
.trend-head h1 { font-size: clamp(1.5rem, 3.6vw, 2.3rem); line-height: 1.2; margin: 12px 0 8px; letter-spacing: -.015em; }
.trend-hook { color: var(--text-dim); font-size: 1.08rem; margin: 0 0 16px; max-width: 720px; }
.trend-stats { display: flex; gap: 26px; flex-wrap: wrap; padding: 14px 0; }
.stat-n { display: block; font-size: 1.35rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.stat-l { color: var(--text-dim); font-size: .78rem; }

.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 24px; margin: 18px 0;
}
.panel h2 { margin: 0 0 10px; font-size: 1.12rem; }
.bigspark svg { width: 100%; height: auto; }
.brief p { margin: 0 0 14px; max-width: 75ch; }
.prov { border-top: 1px dashed var(--border); padding-top: 10px; margin-bottom: 0; }

.faq { border-bottom: 1px solid var(--border); padding: 10px 0; }
.faq:last-child { border-bottom: 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--text-dim); margin: 8px 0 0; }

.coverage { list-style: none; margin: 0; padding: 0; }
.coverage li { padding: 9px 0; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 2px; }
.coverage li:last-child { border-bottom: 0; }
.coverage a { color: var(--text); }
.coverage a:hover { color: var(--cyan); }

/* ---------- archive / lists ---------- */
.daylist { list-style: none; margin: 14px 0 50px; padding: 0; }
.daylist li a {
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  padding: 13px 16px; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px;
  color: var(--text); background: var(--surface);
}
.daylist li a:hover { border-color: rgba(34, 211, 238, .4); text-decoration: none; }
.pager { display: flex; gap: 18px; justify-content: center; padding: 26px 0 40px; }

/* ---------- misc ---------- */
.home-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin: 36px 0 50px; }
.biglink {
  display: flex; flex-direction: column; gap: 4px; padding: 18px 20px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text);
}
.biglink span { color: var(--text-dim); font-size: .88rem; }
.biglink:hover { border-color: rgba(167, 139, 250, .5); text-decoration: none; transform: translateY(-2px); transition: .18s; }
.empty { text-align: center; color: var(--text-dim); padding: 60px 0; }
.prose p { max-width: 75ch; }
.prose h2 { margin-top: 26px; font-size: 1.1rem; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); margin-top: 50px; background: var(--bg-2); }
.footer-inner { display: grid; gap: 18px; padding: 30px 20px 40px; color: var(--text-dim); font-size: .9rem; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-meta { font-size: .8rem; }

@media (prefers-reduced-motion: reduce) {
  .ticker-track, .brand-ekg, .organism-dot { animation: none; }
  .card, .biglink { transition: none; }
}