:root {
  --purple: #7f0881;
  --purple-lite: #c08ac4;
  --orange: #e97f4a;
  --bg: #120814;
  --bg-2: #1a0d1d;
  --surface: rgba(255, 255, 255, 0.045);
  --stroke: rgba(255, 255, 255, 0.1);
  --text: #f6eff7;
  --muted: #b6a4ba;
  --radius: 18px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, .brand, .demo-chord { font-family: Sora, Inter, sans-serif; letter-spacing: -0.02em; }

a { color: inherit; text-decoration: none; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.87em;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--stroke);
  border-radius: 6px;
  padding: 1px 6px;
}

.glow {
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 90vh;
  background:
    radial-gradient(45% 55% at 20% 20%, rgba(127, 8, 129, 0.55), transparent 70%),
    radial-gradient(40% 50% at 80% 10%, rgba(233, 127, 74, 0.28), transparent 70%);
  filter: blur(30px);
  pointer-events: none;
  z-index: 0;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px max(20px, calc((100vw - var(--maxw)) / 2));
  backdrop-filter: blur(14px);
  background: rgba(18, 8, 20, 0.72);
  border-bottom: 1px solid var(--stroke);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand img { border-radius: 9px; }

.nav-links { display: flex; align-items: center; gap: 22px; font-size: 0.93rem; color: var(--muted); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-links .ghost {
  color: var(--text);
  border: 1px solid var(--stroke);
  border-radius: 999px;
  padding: 6px 14px;
}
.nav-links .ghost:hover { border-color: var(--purple-lite); background: rgba(255, 255, 255, 0.05); }

/* ---------- layout ---------- */

main { position: relative; z-index: 1; }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 96px 20px;
}

.section-title { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 10px; text-align: center; }
.section-sub { margin: 0 auto 48px; text-align: center; color: var(--muted); max-width: 620px; }

/* ---------- hero ---------- */

.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 20px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.pill {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--purple-lite);
  border: 1px solid rgba(192, 138, 196, 0.35);
  background: rgba(127, 8, 129, 0.2);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.1rem);
  line-height: 1.05;
  margin: 0 0 20px;
  font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--purple-lite), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede { color: var(--muted); font-size: 1.08rem; margin: 0 0 32px; max-width: 46ch; }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border-radius: 14px;
  padding: 13px 22px;
  font-weight: 600;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s, background 0.18s;
}
.btn:hover { transform: translateY(-2px); }

.btn.primary {
  background: linear-gradient(120deg, var(--purple), #a3239f);
  box-shadow: 0 12px 34px -12px rgba(127, 8, 129, 0.9);
}
.btn.primary:hover { box-shadow: 0 18px 42px -12px rgba(127, 8, 129, 1); }
.btn.primary small { display: block; font-weight: 400; font-size: 0.76rem; opacity: 0.8; line-height: 1.2; }
.btn.primary strong { display: block; font-size: 1rem; line-height: 1.25; }
.btn-icon { font-size: 1.4rem; line-height: 1; }

.btn.ghost-btn { border: 1px solid var(--stroke); color: var(--muted); }
.btn.ghost-btn:hover { color: var(--text); border-color: var(--purple-lite); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
  padding: 0;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}
.hero-meta li::before { content: "●"; color: var(--orange); font-size: 0.6em; vertical-align: middle; margin-right: 8px; }

.hero-art img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.9);
  display: block;
}

/* ---------- feature cards ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(192, 138, 196, 0.45); background: rgba(255, 255, 255, 0.07); }
.card h3 { margin: 0 0 8px; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.94rem; }
.card-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 46px;
  padding: 0 12px;
  border-radius: 13px;
  background: rgba(127, 8, 129, 0.28);
  border: 1px solid rgba(192, 138, 196, 0.3);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 16px;
}
.card-ico.staff { font-size: 1.6rem; }

/* ---------- demo keyboard ---------- */

.demo {
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: 24px;
  padding: 28px;
}

.demo-readout { text-align: center; margin-bottom: 22px; }
.demo-label { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.demo-chord {
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(100deg, var(--purple-lite), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  min-height: 1.15em;
}
.demo-chord.idle { background: none; color: rgba(182, 164, 186, 0.35); }
.demo-notes { color: var(--muted); font-size: 0.9rem; min-height: 1.4em; }

.piano {
  position: relative;
  display: flex;
  height: 190px;
  background: #0b060c;
  border-radius: 12px;
  padding: 10px 10px 12px;
  overflow: hidden;
  touch-action: none;
  user-select: none;
}

.key {
  position: relative;
  border: 0;
  padding: 0 0 10px;
  font: inherit;
  font-size: 0.72rem;
  color: #6b6070;
  cursor: pointer;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.key.white {
  flex: 1;
  background: #fbfafc;
  border-radius: 0 0 7px 7px;
  margin-right: 3px;
  box-shadow: inset 0 -6px 12px -8px rgba(0, 0, 0, 0.6);
}
.key.white:last-child { margin-right: 0; }
.key.white.on { background: var(--purple-lite); color: #2b0b2c; }

.key.black {
  position: absolute;
  top: 10px;
  width: 44px;
  height: 62%;
  background: linear-gradient(#2a2130, #100a13);
  border-radius: 0 0 6px 6px;
  color: #9c8fa1;
  z-index: 2;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
}
.key.black.on { background: linear-gradient(var(--purple), #4c0350); color: #f4d9f5; }

.demo-hint { text-align: center; color: var(--muted); font-size: 0.85rem; margin: 18px 0 0; }

/* ---------- screenshots ---------- */

.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.shots figure { margin: 0; }
.shots img {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  display: block;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.9);
  transition: transform 0.25s;
}
.shots figure:hover img { transform: translateY(-4px); }
.shots figcaption { text-align: center; color: var(--muted); font-size: 0.88rem; margin-top: 12px; }

/* ---------- downloads ---------- */

.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }

.dl {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 30px 22px;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  text-align: center;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.dl:hover {
  transform: translateY(-4px);
  border-color: rgba(192, 138, 196, 0.55);
  box-shadow: 0 20px 50px -26px rgba(127, 8, 129, 0.95);
}
.dl.recommended { border-color: var(--purple-lite); background: rgba(127, 8, 129, 0.16); }
.dl-ico { font-size: 2rem; line-height: 1.2; }
.dl-name { font-weight: 700; font-size: 1.1rem; }
.dl-file { color: var(--muted); font-size: 0.86rem; }
.dl-size { color: var(--purple-lite); font-size: 0.78rem; min-height: 1.2em; }

.notes {
  margin: 34px auto 0;
  max-width: 760px;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 16px 22px;
}
.notes summary { cursor: pointer; font-weight: 600; }
.notes ul { color: var(--muted); font-size: 0.92rem; padding-left: 20px; margin: 14px 0 6px; }
.notes li { margin-bottom: 8px; }

.build-note { text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: 28px; }

/* ---------- footer ---------- */

.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 20px 70px;
  border-top: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 0.9rem;
}
.footer img { border-radius: 11px; margin-bottom: 14px; }
.footer p { margin: 4px 0; }
.footer a { color: var(--purple-lite); }
.footer a:hover { color: var(--text); }
.footer .muted { font-size: 0.85rem; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; gap: 40px; }
  .nav-links a:not(.ghost) { display: none; }
  .section { padding: 68px 20px; }
  .piano { height: 160px; }
}

@media (max-width: 600px) {
  .demo { padding: 18px 14px; border-radius: 18px; }
  .piano { height: 150px; padding: 8px 8px 10px; }
  .key { font-size: 0.62rem; padding-bottom: 7px; }
  .key.white { margin-right: 2px; }
  .demo-hint { font-size: 0.8rem; }
  .btn.primary, .btn.ghost-btn { width: 100%; justify-content: center; }
  .dl { padding: 24px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}