/* MURMUR — design system. dusk, elegant, alive. */
:root {
  --bg: #06070e;
  --bg2: #0a0c16;
  --surface: #0f1222;
  --surface2: #141830;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e9eaf6;
  --muted: #9298b6;
  --dim: #666c8a;
  --violet: #7b6cff;
  --violet-soft: #9b8fff;
  --teal: #46e3c4;
  --ember: #ff8a5c;
  --pink: #ff6f9c;
  --maxw: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.08; }

/* living murmuration behind everything */
#flock {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0; pointer-events: none;
  opacity: 0.9;
}
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.035; mix-blend-mode: screen;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
main, .nav, .footer { position: relative; z-index: 2; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  max-width: var(--maxw); margin: 0 auto;
  padding: 18px 28px;
  backdrop-filter: blur(14px);
}
.nav::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; letter-spacing: 0.14em; font-size: 15px; }
.brand-mark { width: 26px; height: 26px; color: var(--violet-soft); }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 14px; color: var(--muted); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { font-size: 13px; padding: 9px 16px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 500; font-size: 15px;
  padding: 13px 24px; border-radius: 100px; cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, border-color 0.25s;
  border: 1px solid transparent; white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(180deg, var(--violet-soft), var(--violet));
  color: #0b0716; box-shadow: 0 8px 30px -8px rgba(123, 108, 255, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(123, 108, 255, 0.75); }
.btn-ghost { background: rgba(255, 255, 255, 0.03); border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--violet-soft); background: rgba(123, 108, 255, 0.08); }

/* hero */
.hero {
  position: relative; min-height: 92vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 60px 24px;
}
.hero-inner { max-width: 780px; }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.32em;
  text-transform: uppercase; color: var(--violet-soft); margin-bottom: 28px;
}
.wordmark {
  font-size: clamp(64px, 15vw, 168px); font-weight: 700; letter-spacing: -0.04em;
  line-height: 0.9;
  background: linear-gradient(180deg, #ffffff 20%, #b9bce0 55%, var(--violet) 130%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 40px rgba(123, 108, 255, 0.28));
}
.lede { font-family: var(--font-display); font-size: clamp(20px, 3vw, 30px); font-weight: 500; margin-top: 20px; color: var(--text); }
.sub { font-size: clamp(15px, 2vw, 18px); color: var(--muted); margin: 18px auto 0; max-width: 560px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; margin-top: 36px; flex-wrap: wrap; }

.scroll-hint { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); width: 22px; height: 36px; border: 1px solid var(--line-strong); border-radius: 20px; }
.scroll-hint span { position: absolute; top: 7px; left: 50%; transform: translateX(-50%); width: 3px; height: 7px; border-radius: 3px; background: var(--violet-soft); animation: scroll 1.8s infinite; }
@keyframes scroll { 0% { opacity: 0; transform: translate(-50%, 0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, 12px); } }

/* marquee strip */
.strip { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 22px 0; background: rgba(10, 12, 22, 0.5); backdrop-filter: blur(8px); }
.strip-line {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(28px, 5vw, 52px);
  letter-spacing: -0.02em; color: transparent; -webkit-text-stroke: 1px rgba(155, 143, 255, 0.5);
  text-align: center; text-transform: lowercase;
}

/* sections */
.section { max-width: var(--maxw); margin: 0 auto; padding: 110px 28px; }
.section-head { max-width: 640px; margin-bottom: 56px; }
.kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--teal); margin-bottom: 16px; }
.section-head h2 { font-size: clamp(30px, 5vw, 48px); }
.section-head p { color: var(--muted); font-size: 18px; margin-top: 16px; }

/* how it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { position: relative; padding: 32px 26px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(180deg, var(--surface), var(--bg2)); overflow: hidden; transition: border-color 0.3s, transform 0.3s var(--ease); }
.step::before { content: ""; position: absolute; inset: 0; background: radial-gradient(120% 80% at 0% 0%, rgba(123, 108, 255, 0.12), transparent 60%); opacity: 0; transition: opacity 0.3s; }
.step:hover { border-color: var(--line-strong); transform: translateY(-4px); }
.step:hover::before { opacity: 1; }
.step-n { font-family: var(--font-mono); font-size: 13px; color: var(--violet-soft); letter-spacing: 0.1em; margin-bottom: 18px; }
.step h3 { font-size: 21px; margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 15px; }

/* signal demo */
.signal-section { position: relative; }
.signal-demo {
  border: 1px solid var(--line); border-radius: 24px;
  background: linear-gradient(180deg, rgba(20, 24, 48, 0.7), rgba(10, 12, 22, 0.7));
  backdrop-filter: blur(10px);
  padding: 34px; max-width: 760px;
}
.question-card { border: 1px solid var(--line); border-radius: 14px; padding: 22px; background: rgba(0, 0, 0, 0.25); margin-bottom: 28px; }
.q-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--dim); margin-bottom: 12px; }
.q-text { font-family: var(--font-display); font-size: 20px; font-weight: 500; line-height: 1.3; }
.q-meta { font-family: var(--font-mono); font-size: 12px; color: var(--muted); margin-top: 14px; }
.q-meta span { color: var(--teal); }

.consensus-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.consensus-label { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }
.consensus-value { font-family: var(--font-display); font-size: 42px; font-weight: 700; color: var(--teal); font-variant-numeric: tabular-nums; }
.meter { position: relative; height: 14px; border-radius: 10px; background: rgba(255, 255, 255, 0.05); overflow: visible; border: 1px solid var(--line); }
.meter-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 10px; background: linear-gradient(90deg, var(--violet), var(--teal)); width: 64%; transition: width 0.6s var(--ease); box-shadow: 0 0 20px rgba(70, 227, 196, 0.4); }
.meter-you { position: absolute; top: 50%; width: 4px; height: 26px; border-radius: 3px; background: var(--ember); transform: translate(-50%, -50%); left: 50%; transition: left 0.25s var(--ease); box-shadow: 0 0 12px var(--ember); }
.meter-scale { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 11px; color: var(--dim); margin-top: 10px; }

.you-control { margin-top: 30px; }
.you-control label { font-size: 14px; color: var(--muted); }
.you-control label strong { color: var(--ember); font-family: var(--font-mono); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 6px; background: linear-gradient(90deg, rgba(255,138,92,0.5), rgba(255,138,92,0.15)); margin-top: 14px; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%; background: var(--ember); border: 3px solid #1a0f0a; box-shadow: 0 0 16px rgba(255, 138, 92, 0.7); cursor: grab; }
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border: 3px solid #1a0f0a; border-radius: 50%; background: var(--ember); box-shadow: 0 0 16px rgba(255, 138, 92, 0.7); cursor: grab; }
.you-hint { display: flex; justify-content: space-between; margin-top: 14px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.you-hint strong { color: var(--text); }
.you-effect { color: var(--ember); }

.swarm-viz { position: relative; height: 90px; margin-top: 26px; border-top: 1px dashed var(--line); }
.bird-dot { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--violet-soft); opacity: 0.5; transition: left 1.2s var(--ease), opacity 0.6s; }
.demo-note { font-family: var(--font-mono); font-size: 11px; color: var(--dim); margin-top: 22px; }

/* today's signal board */
.board { border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: linear-gradient(180deg, rgba(20, 24, 48, 0.5), rgba(10, 12, 22, 0.5)); backdrop-filter: blur(10px); }
.board-row { display: grid; grid-template-columns: 1fr 200px 64px; align-items: center; gap: 24px; padding: 22px 26px; border-bottom: 1px solid var(--line); transition: background 0.3s; }
.board-row:last-child { border-bottom: none; }
.board-row:hover { background: rgba(123, 108, 255, 0.05); }
.board-q { font-family: var(--font-display); font-weight: 500; font-size: 16px; color: var(--text); }
.board-meta { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--dim); margin-top: 6px; letter-spacing: 0.04em; }
.board-bar { height: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.board-fill { height: 100%; border-radius: 6px; background: linear-gradient(90deg, var(--violet), var(--teal)); width: 50%; transition: width 1.4s var(--ease); }
.board-val { font-family: var(--font-display); font-weight: 700; font-size: 22px; color: var(--teal); text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 700px) {
  .board-row { grid-template-columns: 1fr 64px; grid-template-areas: "q val" "bar bar"; gap: 10px 16px; padding: 20px; }
  .board-q { grid-area: q; } .board-val { grid-area: val; } .board-bar { grid-area: bar; }
}

/* tokenomics */
.token-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.token-card { padding: 26px 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); transition: border-color 0.3s, transform 0.3s var(--ease); }
.token-card:hover { border-color: var(--violet); transform: translateY(-4px); }
.tc-num { font-family: var(--font-display); font-weight: 600; font-size: 15px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); margin-bottom: 14px; }
.token-card p { font-size: 14px; color: var(--muted); }

/* lore */
.lore-section { position: relative; }
.lore-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.lore-inner h2 { font-size: clamp(28px, 5vw, 46px); margin-bottom: 28px; }
.lore-inner p { color: var(--muted); font-size: 17px; margin-bottom: 20px; text-align: left; }
.lore-line { font-family: var(--font-display); font-size: clamp(20px, 3vw, 28px) !important; font-weight: 500; color: var(--violet-soft) !important; text-align: center !important; margin-top: 20px; }

/* faq */
.faq { max-width: 760px; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 22px 0; font-family: var(--font-display); font-weight: 500; font-size: 18px; display: flex; justify-content: space-between; align-items: center; transition: color 0.2s; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--violet-soft); font-size: 22px; transition: transform 0.3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--violet-soft); }
.faq details p { color: var(--muted); font-size: 15px; padding-bottom: 22px; max-width: 620px; }

/* cta band */
.cta-band { text-align: center; padding: 120px 24px; max-width: var(--maxw); margin: 0 auto; border-top: 1px solid var(--line); }
.cta-band h2 { font-size: clamp(34px, 6vw, 60px); }
.cta-band p { color: var(--muted); font-size: 18px; margin: 16px 0 34px; }

/* footer */
.footer { max-width: var(--maxw); margin: 0 auto; padding: 40px 28px 60px; display: flex; align-items: center; gap: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.foot-links { display: flex; gap: 22px; margin-left: auto; font-size: 14px; color: var(--muted); }
.foot-links a:hover { color: var(--text); }
.foot-note { font-family: var(--font-mono); font-size: 12px; color: var(--dim); width: 100%; }

/* reveal on scroll */
.section, .cta-band { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.section.in, .cta-band.in { opacity: 1; transform: none; }

/* responsive */
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; }
  .token-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
  .section { padding: 80px 22px; }
}
@media (max-width: 520px) {
  .token-grid { grid-template-columns: 1fr; }
  .nav-cta { display: none; }
  .signal-demo { padding: 22px; }
  .consensus-value { font-size: 34px; }
  .you-hint { flex-direction: column; gap: 6px; align-items: flex-start; }
  .q-text { font-size: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  #flock { opacity: 0.4; }
  .section, .cta-band { opacity: 1; transform: none; transition: none; }
}