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

:root {
  --bg:        #0a0a0a;
  --bg-1:      #111;
  --bg-2:      #1a1a1a;
  --bg-3:      #232323;
  --line:      #2a2a2a;
  --fg:        #f0f0f0;
  --fg-2:      #b8b8b8;
  --fg-3:      #6a6a6a;
  --accent:    #5cbfb0;
  --accent-hi: #7dd6c7;
  --accent-lo: #2a8d80;
  --hot:       #e67e22;
  --warn:      #d68910;
  --bad:       #e74c3c;

  --maxw: 1180px;
  --pad:  clamp(20px, 4vw, 56px);

  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: var(--accent-hi); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--accent); }

code, kbd, pre { font-family: var(--font-mono); font-size: .92em; }
kbd {
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 6px;
  font-size: .85em;
  color: var(--fg);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ── Nav ─────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--pad);
  background: rgba(10,10,10,.78);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }

.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--fg);
  font-weight: 800;
}
.brand-mark { color: var(--accent); display: inline-flex; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: .14em;
  font-size: 13px;
}

.nav-links {
  display: flex; align-items: center; gap: 26px;
}
.nav-links a {
  color: var(--fg-2);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
}
.nav-links a:hover { color: var(--fg); }
.nav-links .nav-cta {
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 7px 14px;
  border-radius: 999px;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.nav-links .nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 720px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .02em;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, color .15s ease, border-color .15s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  color: #062420;
}
.btn-primary:hover { background: var(--accent-hi); color: #062420; }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-arrow { transition: transform .15s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }
.btn-lg { padding: 16px 28px; font-size: 15px; }

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: clamp(70px, 12vw, 140px) var(--pad) clamp(120px, 18vw, 200px);
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(92,191,176,.18), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(92,191,176,.10), transparent 60%),
    linear-gradient(180deg, #0a0a0a 0%, #060606 100%);
}
.hero-grid {
  position: absolute; inset: 0; z-index: -1; opacity: .35;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  position: relative; z-index: 1;
}

.eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 18px;
  padding: 4px 10px;
  border: 1px solid rgba(92,191,176,.3);
  border-radius: 999px;
  background: rgba(92,191,176,.06);
}

.hero-title {
  font-size: clamp(42px, 7.4vw, 96px);
  font-weight: 900;
  letter-spacing: -.035em;
  line-height: .98;
  margin-bottom: 24px;
}
.hero-title .line { display: block; }
.hero-title .accent {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-hi) 60%, #c4f1e7 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 640px;
  font-size: clamp(15px, 1.6vw, 19px);
  color: var(--fg-2);
  margin-bottom: 36px;
}
.hero-sub strong { color: var(--fg); font-weight: 600; }

.hero-cta {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: 28px;
}

.hero-meta {
  display: flex; align-items: center; gap: 10px;
  color: var(--fg-3); font-size: 13px;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--fg-3);
}
.dot-on {
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(92,191,176,.6);
  animation: pulse 2.2s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(92,191,176,.55); }
  70%  { box-shadow: 0 0 0 10px rgba(92,191,176,0); }
  100% { box-shadow: 0 0 0 0 rgba(92,191,176,0); }
}

/* Hero waveform */
.hero-wave {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 110px; pointer-events: none;
  z-index: 0;
  display: flex; align-items: end; justify-content: stretch;
  padding: 0 var(--pad);
}
.wave-bars {
  display: flex; align-items: end; gap: 3px;
  width: 100%; height: 100%;
}
.wave-bars > span {
  flex: 1 1 0;
  background: linear-gradient(180deg, rgba(92,191,176,.0) 0%, var(--accent) 100%);
  border-radius: 2px 2px 0 0;
  opacity: .55;
  height: var(--h, 30%);
  transition: height .35s cubic-bezier(.2,.8,.2,1), opacity .35s ease;
}
.wave-line {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: .5;
}

/* ── Strip ───────────────────────────────────────────────────────────── */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
}
.strip-grid {
  max-width: var(--maxw); margin: 0 auto;
  padding: 56px var(--pad);
  display: grid; gap: 40px;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 820px) {
  .strip-grid { grid-template-columns: 1fr; gap: 32px; }
}
.strip-num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: .12em;
  margin-bottom: 12px;
}
.strip-item h3 {
  font-size: 20px; font-weight: 700;
  letter-spacing: -.01em; margin-bottom: 8px;
}
.strip-item p { color: var(--fg-2); font-size: 14.5px; }

/* ── Screenshots ─────────────────────────────────────────────────────── */
.shot {
  padding: clamp(48px, 7vw, 88px) 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-1) 100%);
}
.shot-figure {
  margin: 0 auto;
  max-width: 1100px;
  text-align: center;
}
.shot-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.7),
              0 0 0 1px rgba(255,255,255,.02) inset;
}
.shot-figure figcaption {
  margin-top: 14px;
  color: var(--fg-3);
  font-size: 13px;
  font-style: italic;
}
.shot-figure-inline {
  margin: 32px auto 0;
}
.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.shot-grid .shot-figure { margin: 0; max-width: none; }

/* ── Sections ────────────────────────────────────────────────────────── */
.section {
  padding: clamp(72px, 10vw, 120px) 0;
}
.section-alt {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-title {
  font-size: clamp(28px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: 1.05;
  margin: 12px 0 14px;
  max-width: 820px;
}
.section-sub {
  color: var(--fg-2);
  max-width: 680px;
  font-size: 16px;
  margin-bottom: 48px;
}

/* ── Features grid ──────────────────────────────────────────────────── */
.features-grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 980px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .features-grid { grid-template-columns: 1fr; } }

.feature {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 24px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
  position: relative; overflow: hidden;
}
.feature::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(400px 200px at 0% 0%, rgba(92,191,176,.08), transparent 60%);
  opacity: 0; transition: opacity .25s ease;
  pointer-events: none;
}
.feature:hover {
  transform: translateY(-3px);
  border-color: rgba(92,191,176,.4);
  background: #1d1d1d;
}
.feature:hover::before { opacity: 1; }
.feature-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(92,191,176,.1);
  color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 {
  font-size: 17px; font-weight: 700; margin-bottom: 6px;
  letter-spacing: -.01em;
}
.feature p { color: var(--fg-2); font-size: 14px; }
.feature p code {
  background: var(--bg-3); padding: 1px 6px; border-radius: 4px; color: var(--accent-hi);
}

/* ── Vocabulary ─────────────────────────────────────────────────────── */
.vocab-block { margin-bottom: 32px; }
.vocab-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--fg-3);
  margin-bottom: 12px;
}
.chips {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.chip {
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--fg);
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.chip:hover { transform: translateY(-1px); border-color: var(--accent); }
.chip.energy {
  background: var(--ec);
  border-color: var(--ec);
  color: #fff;
  font-weight: 700;
  letter-spacing: .04em;
  box-shadow: 0 4px 24px -8px var(--ec);
}
.chip.rating {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: .03em;
}
.vocab-foot {
  color: var(--fg-3);
  font-size: 13.5px;
  font-style: italic;
  margin-top: 24px;
}

/* ── Workflow ────────────────────────────────────────────────────────── */
.flow {
  list-style: none;
  display: grid; gap: 16px;
  grid-template-columns: repeat(4, 1fr);
  counter-reset: flow;
}
@media (max-width: 980px) { .flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .flow { grid-template-columns: 1fr; } }
.flow li {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 22px;
  position: relative;
}
.flow-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--accent);
  display: block; margin-bottom: 14px;
}
.flow li h4 {
  font-size: 17px; font-weight: 700; letter-spacing: -.01em;
  margin-bottom: 6px;
}
.flow li p { color: var(--fg-2); font-size: 14px; }

/* ── Format table ────────────────────────────────────────────────────── */
.format-table {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-2);
}
.ft-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 2fr;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  align-items: center;
}
.ft-row:last-child { border-bottom: 0; }
.ft-head {
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--fg-3);
  text-transform: uppercase;
}
.ft-row .ok   { color: var(--accent); font-weight: 700; }
.ft-row .warn { color: var(--fg-3); }
.ft-row .bad  { color: var(--warn); font-weight: 600; }
.ft-row .hint {
  font-size: 12px; color: var(--fg-3);
  font-weight: 400; margin-left: 6px;
}
@media (max-width: 720px) {
  .ft-row { grid-template-columns: 1fr 1fr; gap: 6px 16px; }
  .ft-head { display: none; }
  .ft-row > div::before {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .14em;
    color: var(--fg-3);
    text-transform: uppercase;
  }
  .ft-row > div:nth-child(1)::before { content: 'Format'; }
  .ft-row > div:nth-child(2)::before { content: 'Playback'; }
  .ft-row > div:nth-child(3)::before { content: 'Tagging'; }
  .ft-row > div:nth-child(4)::before { content: 'Rekordbox'; }
}
.format-foot {
  margin-top: 18px;
  color: var(--fg-3);
  font-size: 13.5px;
}
.format-foot code {
  background: var(--bg-3); padding: 1px 6px; border-radius: 4px;
}

/* ── Install / CTA ───────────────────────────────────────────────────── */
.section-cta { text-align: left; }
.codeblock {
  background: #050505;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 24px;
  font-size: 14px;
  color: var(--fg);
  overflow-x: auto;
  margin-bottom: 18px;
  position: relative;
}
.codeblock code { display: block; white-space: pre; }
.prompt { color: var(--accent); user-select: none; margin-right: 10px; }

.install-note {
  color: var(--fg-3);
  font-size: 13.5px;
  margin-bottom: 32px;
}

.cta-row {
  display: flex; flex-wrap: wrap; gap: 12px;
}

/* ── Footer ──────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  background: #060606;
  padding: 32px 0;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.footer-meta {
  color: var(--fg-3);
  font-size: 13px;
}

/* ── Reveal-on-scroll ────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}