/* =================================================================
   MusicTagger3000 — landing page
   Aesthetic: vintage hi-fi / stereo component. Warm dark panel,
   amber tube-glow accents, spectrum-analyzer motif, analog grain.
   ================================================================= */

:root {
  /* warm analog palette */
  --bg:        #14100b;
  --bg-2:      #1b150e;
  --panel:     #221b12;
  --panel-2:   #2b2216;
  --line:      #3a2e1d;
  --cream:     #f4ead6;
  --muted:     #b6a585;
  --dim:       #8a7a5e;

  /* glows */
  --amber:     #ff9b3d;
  --amber-soft:#ffbe6e;
  --green:     #5fe0a6;   /* "tagged / OK" LED */
  --red:       #ff6048;   /* "before / peak" LED */

  --maxw: 1120px;
  --radius: 14px;
  --ease: cubic-bezier(.2,.7,.2,1);

  --font-sans: 'Archivo', system-ui, sans-serif;
  --font-mono: 'DM Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(1200px 600px at 50% -10%, #2a2012 0%, transparent 60%),
    radial-gradient(900px 500px at 90% 20%, #241a0f 0%, transparent 55%),
    var(--bg);
  color: var(--cream);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- atmosphere ---------- */
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}
.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(120% 120% at 50% 30%, transparent 55%, rgba(0,0,0,.55) 100%);
}

/* ---------- layout helpers ---------- */
section { position: relative; z-index: 2; padding: clamp(64px, 9vw, 130px) clamp(20px, 5vw, 48px); max-width: var(--maxw); margin: 0 auto; }

.section-title {
  font-size: clamp(1.7rem, 4.2vw, 3rem);
  font-weight: 800; letter-spacing: -.02em; line-height: 1.05;
  margin-bottom: .6em;
}
.section-lead { color: var(--muted); max-width: 56ch; font-size: clamp(1rem, 1.6vw, 1.18rem); margin-bottom: 2.4em; }
.muted { color: var(--dim); }
.mono { font-family: var(--font-mono); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 48px);
  background: rgba(20,16,11,.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--cream); }
.brand__led {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green), 0 0 16px rgba(95,224,166,.5);
  animation: pulse 2.6s var(--ease) infinite;
}
.brand__name { font-weight: 800; letter-spacing: -.01em; font-size: 1.12rem; }
.brand__num { color: var(--amber); font-family: var(--font-mono); }
.nav__links { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.nav__links a { color: var(--muted); text-decoration: none; font-size: .95rem; font-weight: 500; transition: color .2s; }
.nav__links a:hover { color: var(--cream); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .4em;
  font-family: var(--font-sans); font-weight: 700; font-size: 1rem;
  padding: .8em 1.4em; border-radius: 999px; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: transform .2s var(--ease), box-shadow .25s, background .2s;
  white-space: nowrap;
}
.btn--small { padding: .55em 1em; font-size: .9rem; }
.btn--primary {
  background: linear-gradient(180deg, var(--amber-soft), var(--amber));
  color: #2a1705;
  box-shadow: 0 6px 22px rgba(255,155,61,.32), inset 0 1px 0 rgba(255,255,255,.4);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255,155,61,.5), inset 0 1px 0 rgba(255,255,255,.5); }
.btn--ghost { background: transparent; color: var(--cream); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--amber); color: var(--amber-soft); transform: translateY(-2px); }

/* ---------- hero ---------- */
.hero { text-align: center; padding-top: clamp(54px, 8vw, 96px); }
.hero__plate { display: inline-block; margin-bottom: 26px; }
.eyebrow {
  font-family: var(--font-mono); font-size: .76rem; letter-spacing: .18em;
  color: var(--amber-soft); padding: 7px 14px; border: 1px solid var(--line);
  border-radius: 999px; background: rgba(255,155,61,.06);
}
.hero__title {
  font-size: clamp(2.3rem, 7vw, 5rem); font-weight: 900; letter-spacing: -.03em;
  line-height: .98; margin: 0 auto .5em; max-width: 16ch;
}
.glow {
  color: var(--amber);
  text-shadow: 0 0 24px rgba(255,155,61,.45), 0 0 50px rgba(255,155,61,.2);
}
.hero__sub { color: var(--muted); max-width: 60ch; margin: 0 auto 2em; font-size: clamp(1.02rem, 1.8vw, 1.28rem); }
.hero__sub em { color: var(--cream); font-style: normal; border-bottom: 1px dashed var(--amber); }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero__trust { margin-top: 22px; color: var(--dim); font-size: .92rem; display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }

/* ---------- deck / spectrum analyzer ---------- */
.deck {
  margin: clamp(44px, 6vw, 72px) auto 0; max-width: 760px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: 0 30px 60px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.05);
}
.deck__row { display: flex; align-items: center; gap: 16px; }
.deck__label {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em;
  color: var(--dim); border: 1px solid var(--line); padding: 5px 9px; border-radius: 6px; white-space: nowrap;
}
.deck__label--ok { color: var(--green); border-color: rgba(95,224,166,.4); box-shadow: 0 0 12px rgba(95,224,166,.18) inset; }

.analyzer { flex: 1; display: flex; align-items: flex-end; gap: 4px; height: 56px; }
.analyzer span {
  flex: 1; min-width: 3px; border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, var(--amber), #c25c12);
  box-shadow: 0 0 8px rgba(255,155,61,.4);
  animation: eq 1.1s ease-in-out infinite;
  transform-origin: bottom;
}
.analyzer span:nth-child(odd)  { animation-duration: .9s; }
.analyzer span:nth-child(3n)   { animation-duration: 1.4s; background: linear-gradient(180deg, var(--green), #1f9c6a); box-shadow: 0 0 8px rgba(95,224,166,.4); }
.analyzer span:nth-child(4n)   { animation-duration: 1.2s; }
.analyzer span:nth-child(5n)   { animation-duration: .7s; }
.analyzer span:nth-child(1){animation-delay:0s}.analyzer span:nth-child(2){animation-delay:.1s}
.analyzer span:nth-child(3){animation-delay:.25s}.analyzer span:nth-child(4){animation-delay:.05s}
.analyzer span:nth-child(5){animation-delay:.3s}.analyzer span:nth-child(6){animation-delay:.15s}
.analyzer span:nth-child(7){animation-delay:.22s}.analyzer span:nth-child(8){animation-delay:.4s}
.analyzer span:nth-child(9){animation-delay:.12s}.analyzer span:nth-child(10){animation-delay:.33s}
.analyzer--lg { height: 120px; gap: 6px; max-width: 420px; margin: 0 auto 18px; }
.analyzer--sm { height: 26px; gap: 3px; width: 90px; display: inline-flex; margin-bottom: 14px; }

.deck__readout {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-family: var(--font-mono); font-size: .8rem; color: var(--muted);
  display: flex; align-items: center; gap: 8px; overflow: hidden; white-space: nowrap;
}
.deck__readout .blink { color: var(--red); }
.ticker { color: var(--green); overflow: hidden; text-overflow: ellipsis; }

@keyframes eq { 0%,100% { transform: scaleY(.18);} 50% { transform: scaleY(1);} }
@keyframes pulse { 0%,100% { opacity: 1;} 50% { opacity: .35;} }
.blink { animation: pulse 1.1s steps(1) infinite; }

/* ---------- problem / before-after ---------- */
.compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: clamp(14px, 3vw, 30px); align-items: center; }
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; position: relative;
  box-shadow: 0 18px 40px rgba(0,0,0,.4);
}
.panel--before { border-color: rgba(255,96,72,.28); }
.panel--after  { border-color: rgba(95,224,166,.3); }
.panel__tag { position: absolute; top: -11px; left: 18px; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; padding: 4px 10px; border-radius: 6px; }
.panel__tag--bad  { background: #3a1712; color: var(--red); border: 1px solid rgba(255,96,72,.4); }
.panel__tag--good { background: #0f2c1f; color: var(--green); border: 1px solid rgba(95,224,166,.4); }
.filelist { list-style: none; font-family: var(--font-mono); font-size: .9rem; }
.filelist li { padding: 9px 0; border-bottom: 1px dashed var(--line); color: var(--muted); display: flex; gap: 10px; align-items: flex-start; }
.filelist li:last-child { border-bottom: 0; }
.filelist .x { color: var(--red); }
.filelist--clean li { color: var(--cream); align-items: center; gap: 16px; padding: 6px 0; border: 0; }
.filelist--clean strong { color: var(--cream); font-family: var(--font-sans); font-size: 1.05rem; }
.filelist--clean .yr { color: var(--amber-soft); }
.art {
  width: 64px; height: 64px; flex: none; border-radius: 8px;
  background:
    radial-gradient(circle at 30% 30%, var(--amber-soft), transparent 60%),
    linear-gradient(135deg, #b8431b, #5f1f0c);
  box-shadow: 0 6px 16px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.1);
}
.arrow { font-size: 2rem; color: var(--amber); text-shadow: 0 0 16px rgba(255,155,61,.5); }

/* ---------- how it works ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.5vw, 28px); counter-reset: step; }
.step {
  background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 24px; position: relative; overflow: hidden;
}
.step::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: linear-gradient(90deg, var(--amber), transparent); }
.step__no { font-family: var(--font-mono); font-size: 2.2rem; font-weight: 500; color: var(--amber); opacity: .55; display: block; margin-bottom: 8px; }
.step h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: .98rem; }

/* ---------- demo ---------- */
.demo { text-align: center; }
.screen { max-width: 880px; margin: 0 auto; }
.screen__bezel {
  background: linear-gradient(180deg, #0d0a06, #181107);
  border: 1px solid var(--line); border-radius: 18px; padding: 16px;
  box-shadow: 0 40px 80px rgba(0,0,0,.6), inset 0 0 0 1px rgba(255,255,255,.04);
}
.screen__placeholder {
  aspect-ratio: 16/9; border-radius: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.02) 0 2px, transparent 2px 4px),
    radial-gradient(120% 90% at 50% 40%, #221a10, #0c0905);
  border: 1px solid var(--line);
}
.screen video { width: 100%; border-radius: 10px; display: block; }
.screen__hint { font-weight: 700; font-size: 1.2rem; color: var(--amber-soft); }
.screen__sub { color: var(--dim); font-size: .82rem; }

/* ---------- features / spec sheet ---------- */
.spec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(14px, 2vw, 22px); }
.spec {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px;
  background: var(--panel); transition: transform .25s var(--ease), border-color .25s, box-shadow .25s;
}
.spec:hover { transform: translateY(-4px); border-color: var(--amber); box-shadow: 0 18px 40px rgba(255,155,61,.12); }
.spec__no { color: var(--amber); font-size: .9rem; display: block; margin-bottom: 14px; }
.spec h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -.01em; }
.spec p { color: var(--muted); font-size: .96rem; }

/* ---------- pricing ---------- */
.pricing { text-align: center; }
.pricing .section-lead { margin-left: auto; margin-right: auto; }
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 36px; }
.tier {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 24px;
  background: var(--panel);
}
.tier--featured {
  border-color: var(--amber);
  background: linear-gradient(180deg, rgba(255,155,61,.1), var(--panel));
  box-shadow: 0 20px 50px rgba(255,155,61,.16);
  transform: scale(1.04);
}
.tier__ribbon { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--amber); color: #2a1705; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; padding: 4px 12px; border-radius: 999px; font-weight: 500; }
.tier__label { display: block; color: var(--dim); font-size: .74rem; letter-spacing: .12em; margin-bottom: 14px; }
.tier__price { font-size: 2.6rem; font-weight: 900; letter-spacing: -.02em; }
.tier__price span { font-size: 1rem; font-weight: 500; color: var(--muted); margin-left: 4px; }
.tier__note { color: var(--muted); font-size: .9rem; margin-top: 6px; }

/* ---------- waitlist ---------- */
.waitlist { text-align: center; }
.waitlist__inner {
  max-width: 640px; margin: 0 auto; padding: clamp(36px, 5vw, 56px);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 30px 70px rgba(0,0,0,.5);
}
.waitlist h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900; letter-spacing: -.02em; margin-bottom: .4em; }
.waitlist p { color: var(--muted); margin-bottom: 1.6em; }
.ck { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; }
.ck__email {
  flex: 1; padding: .85em 1.1em; border-radius: 999px; border: 1px solid var(--line);
  background: var(--bg); color: var(--cream); font-family: var(--font-mono); font-size: .95rem;
}
.ck__email::placeholder { color: var(--dim); }
.ck__email:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px rgba(255,155,61,.18); }
.ck__msg { color: var(--green); margin-top: 14px; font-size: .92rem; }
.ck__fine { color: var(--dim); font-size: .8rem; margin-top: 16px; margin-bottom: 0; }

/* ---------- faq ---------- */
.faq__list { display: grid; gap: 12px; max-width: 760px; }
.faq details {
  border: 1px solid var(--line); border-radius: 12px; padding: 4px 22px; background: var(--panel);
  transition: border-color .2s;
}
.faq details[open] { border-color: var(--amber); }
.faq summary {
  cursor: pointer; list-style: none; padding: 18px 0; font-weight: 600; font-size: 1.05rem;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--amber); font-family: var(--font-mono); font-size: 1.4rem; transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); padding-bottom: 20px; margin-top: -4px; max-width: 64ch; }

/* ---------- footer ---------- */
.footer {
  position: relative; z-index: 2; border-top: 1px solid var(--line);
  padding: 40px clamp(20px, 5vw, 48px); max-width: var(--maxw); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.footer__brand { display: flex; flex-direction: column; gap: 4px; }
.footer__brand .mono { color: var(--dim); font-size: .72rem; letter-spacing: .12em; }
.footer__legal { color: var(--dim); font-size: .8rem; max-width: 50ch; text-align: right; }

/* ---------- reveal animation (progressive enhancement: only hides when JS on) ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .steps, .spec-grid, .tiers { grid-template-columns: 1fr; }
  .tier--featured { transform: none; }
  .compare { grid-template-columns: 1fr; }
  .arrow { transform: rotate(90deg); justify-self: center; }
  .nav__links a:not(.btn) { display: none; }
  .footer { flex-direction: column; text-align: center; }
  .footer__legal { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  .analyzer span, .brand__led, .blink { animation: none; }
  .reveal { transition: none; opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}