/* All in Music — C direction tokens */
:root {
  --bg-0: #050811;
  --bg-1: #0a0e1c;
  --bg-2: #111627;
  --bg-3: #1a1f33;
  --ink: #e8edf7;
  --ink-2: rgba(232,237,247,0.75);
  --ink-3: rgba(232,237,247,0.55);
  --ink-4: rgba(232,237,247,0.3);
  --rule: rgba(232,237,247,0.12);
  --rule-strong: rgba(232,237,247,0.22);

  --accent: oklch(70% 0.25 250);    /* electric blue */
  --accent-2: oklch(85% 0.15 240);  /* softer cyan */
  --hot: oklch(70% 0.28 0);         /* magenta flash */

  --accent-glow: 0 0 28px oklch(70% 0.25 250 / 0.55);
  --accent-glow-strong: 0 0 60px oklch(70% 0.25 250 / 0.7);

  --ff-display: "Archivo Black", "Noto Sans JP", sans-serif;
  --ff-jp: "Noto Sans JP", sans-serif;
  --ff-mono: "JetBrains Mono", ui-monospace, monospace;
}

html, body { margin:0; padding:0; background:var(--bg-0); color:var(--ink); font-family: var(--ff-jp); }
body { -webkit-font-smoothing: antialiased; }
* { box-sizing: border-box; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: var(--bg-0); }

.grain::before{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.22; mix-blend-mode:overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* global keyframes */
@keyframes pulseC { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
@keyframes floatY { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
@keyframes marquee { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }
@keyframes fadeUp { 0%{opacity:0; transform:translateY(24px)} 100%{opacity:1; transform:translateY(0)} }
@keyframes slideIn { 0%{opacity:0; transform:translateX(-24px)} 100%{opacity:1; transform:translateX(0)} }

.fade-up { animation: fadeUp .8s cubic-bezier(.2,.7,.2,1) both; }
.reveal { opacity:0; transform:translateY(32px); transition: opacity .8s, transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity:1; transform:translateY(0); }

/* scrollbar */
::-webkit-scrollbar { width:10px; height:10px; }
::-webkit-scrollbar-track { background:#0a0e1c; }
::-webkit-scrollbar-thumb { background:#1a1f33; border-radius:10px; }
::-webkit-scrollbar-thumb:hover { background:#2a2f44; }

/* section skeleton */
.section { position:relative; padding: 120px 0; overflow:hidden; }
.section-inner { max-width: 1280px; margin: 0 auto; padding: 0 48px; position:relative; }

.eyebrow {
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--ff-display); font-size:12px; letter-spacing: 2.5px;
  color: var(--accent-2);
}
.eyebrow .dot {
  width:7px; height:7px; border-radius:50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  animation: pulseC 1.6s infinite;
}
.eyebrow .hash { color: var(--ink-4); font-family: var(--ff-mono); }

.h2 {
  margin: 18px 0 8px;
  font-family: var(--ff-jp); font-weight: 900;
  font-size: clamp(40px, 5.2vw, 72px); line-height: 1.05; letter-spacing: -1.5px;
}
.h2 .accent { color: var(--accent); text-shadow: 0 0 28px oklch(70% 0.25 250 / 0.45); }
.h2 em { font-style: italic; }

.lead { color: var(--ink-2); font-size: 17px; line-height: 1.9; max-width: 640px; }

.btn {
  position:relative; display:inline-flex; align-items:center; gap: 14px;
  padding: 16px 22px;
  font-weight: 800; font-size: 14px;
  cursor:pointer; border: none; text-decoration:none; transition: transform .2s, box-shadow .2s;
  font-family: var(--ff-jp);
}
.btn .arrow { display:inline-block; transition: transform .2s; }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary {
  color: var(--bg-0);
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  box-shadow: var(--accent-glow-strong), inset 0 0 0 1px oklch(90% 0.05 240);
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
  color: var(--ink); background: transparent;
  border: 1px solid var(--rule-strong);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-2); }

.tag {
  display:inline-flex; align-items:center; gap:8px;
  padding: 4px 10px;
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: 1.5px;
  color: var(--accent-2); border:1px solid var(--rule-strong);
}

hr.rule { border:none; height:1px; background: var(--rule); margin: 0; }

.mono { font-family: var(--ff-mono); }
.display { font-family: var(--ff-display); letter-spacing: 1px; }

/* scroll cue arrow */
.scroll-cue {
  position: absolute; right: 40px; bottom: 20px;
  font-family: var(--ff-display); font-size: 11px; letter-spacing: 3px;
  color: var(--ink-3); display:flex; align-items:center; gap:10px;
}
.scroll-cue .line { width: 50px; height:1px; background: var(--accent); box-shadow: var(--accent-glow); }