/* =========================================================================
   0pattern — Melody Generator* landing page
   Retro-CRT / pixel aesthetic. Palette taken from the brand mark:
   cream (#F2EEE3) + neon-green phosphor (#39FF14) on black.
   ========================================================================= */

/* ---- fonts (self-hosted, from src/img/fonts) ---------------------------- */
@font-face {
  font-family: 'Pixelify Sans';
  src: url('../img/fonts/PixelifySans.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: 'VT323';
  src: url('../img/fonts/VT323.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

/* ---- tokens ------------------------------------------------------------- */
:root {
  --bg: #000000;
  --fg: #f2eee3;
  --accent: #39ff14;
  --muted: #8f8b80;
  --line: rgba(242, 238, 227, 0.22);
  --line-strong: rgba(242, 238, 227, 0.55);
  --panel: #0a0a0a;

  --font-pixel: 'Pixelify Sans', ui-monospace, monospace;
  --font-crt: 'VT323', ui-monospace, monospace;
  --font-mono: 'Courier New', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --maxw: 1120px;
  --gutter: clamp(1.1rem, 4vw, 3rem);
}

/* ---- reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
figure { margin: 0; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-pixel); font-weight: 700; line-height: 1.05; margin: 0; overflow-wrap: break-word; }
p { margin: 0 0 1rem; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---- CRT overlays (fixed, behind content interaction) ------------------- */
.crt-scanlines::after {
  content: "";
  position: fixed; inset: 0;
  background: linear-gradient(rgba(0,0,0,0) 50%, rgba(0,0,0,0.28) 50%);
  background-size: 100% 4px;
  opacity: 0.35;
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: 9998;
}
.crt-scanlines::before {
  content: "";
  position: fixed; inset: 0;
  background-image: radial-gradient(rgba(242,238,227,0.9) 0.5px, transparent 0.6px);
  background-size: 3px 3px;
  opacity: 0.035;
  pointer-events: none;
  z-index: 9997;
}

/* ---- layout helpers ----------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { border-top: 2px solid var(--line-strong); padding-block: clamp(3rem, 8vw, 6rem); }
.eyebrow {
  font-family: var(--font-crt);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
.eyebrow--muted { color: var(--muted); }
.sec-index { color: var(--accent); }

/* ---- header ------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(0,0,0,0.86);
  backdrop-filter: blur(4px);
  border-bottom: 2px solid var(--line-strong);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 1rem;
  min-height: 64px;
}
.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand img { width: 30px; height: 30px; }
.brand__name { font-family: var(--font-pixel); font-weight: 700; font-size: 1.35rem; letter-spacing: 0.02em; }
.brand__name b { color: var(--fg); }
.nav { margin-left: auto; display: flex; gap: 1.5rem; align-items: center; }
.nav a {
  font-family: var(--font-crt); font-size: 1.2rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
  border-bottom: 2px solid transparent; padding-bottom: 2px;
  transition: color .12s, border-color .12s;
}
.nav a:hover, .nav a:focus-visible { color: var(--fg); border-color: var(--accent); }
.status-chip {
  font-family: var(--font-crt); font-size: 1rem; letter-spacing: 0.05em;
  color: var(--accent); border: 1px solid var(--accent);
  padding: 0.1rem 0.5rem; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.status-chip .dot { width: 7px; height: 7px; background: var(--accent); display: inline-block; }
.blink { animation: blink 1.2s steps(1) infinite; }
@keyframes blink { 0%,60%{opacity:1} 61%,100%{opacity:0} }

/* ---- hero --------------------------------------------------------------- */
.hero { border-top: none; padding-block: 0; }
.hero .wrap {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, 400px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}
.hero__copy { min-width: 0; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5rem);
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}
.hero h1 .star { color: var(--accent); }
.hero__lead { font-size: 1.15rem; max-width: 46ch; color: var(--fg); }
.hero__lead b { color: var(--accent); font-weight: 400; }

/* signup (coming soon, disabled) */
.signup { margin-top: 2rem; max-width: 30rem; }
.signup__label { font-family: var(--font-crt); font-size: 1.15rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem; }
.signup__row { display: flex; border: 2px solid var(--line-strong); }
.signup__row input {
  flex: 1; background: transparent; border: 0; color: var(--muted);
  font-family: var(--font-mono); font-size: 1rem; padding: 0.75rem 0.9rem;
}
.signup__row input::placeholder { color: rgba(242,238,227,0.35); }
.signup__row button {
  background: transparent; border: 0; border-left: 2px solid var(--line-strong);
  color: var(--muted); font-family: var(--font-pixel); font-weight: 700;
  padding: 0 1.1rem; letter-spacing: 0.04em; cursor: not-allowed;
}
.signup[aria-disabled="true"] { opacity: 0.75; }
.signup__note { font-family: var(--font-crt); font-size: 1.1rem; color: var(--muted); margin-top: 0.55rem; letter-spacing: 0.03em; }
.signup__note::before { content: "› "; color: var(--accent); }

/* hero panel image */
.hero__panel { position: relative; min-width: 0; }
.hero__panel img {
  width: 100%; max-width: 400px; height: auto; margin-inline: auto;
  filter: drop-shadow(0 0 1px rgba(57,255,20,0.25));
}
.panel-caption {
  font-family: var(--font-crt); font-size: 1rem; text-align: center;
  color: var(--muted); margin-top: 0.75rem; letter-spacing: 0.05em;
}

/* ---- generic prose + grids --------------------------------------------- */
.section h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); margin-bottom: 1.1rem; }
.lead { font-size: 1.15rem; max-width: 62ch; color: var(--fg); }
.lead b { color: var(--accent); font-weight: 400; }
.muted { color: var(--muted); }

/* how-it-works steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 2.5rem; }
.step { background: var(--bg); padding: 1.5rem; }
.step__n { font-family: var(--font-crt); font-size: 1.5rem; color: var(--accent); }
.step h3 { font-size: 1.15rem; margin: 0.4rem 0 0.5rem; }
.step p { font-size: 0.98rem; color: var(--muted); margin: 0; }

/* controls reference */
.controls-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.cgroup { border: 2px solid var(--line-strong); }
.cgroup__head {
  display: flex; align-items: baseline; gap: 0.6rem;
  padding: 0.7rem 1rem; border-bottom: 2px solid var(--line-strong);
  background: rgba(242,238,227,0.03);
}
.cgroup__head h3 { font-size: 1.1rem; }
.cgroup__head .tag { font-family: var(--font-crt); font-size: 1rem; color: var(--accent); letter-spacing: 0.06em; margin-left: auto; text-transform: uppercase; }
.crow { display: grid; grid-template-columns: 4.2rem 1fr; gap: 0.75rem; padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); }
.crow:last-child { border-bottom: 0; }
.crow__id { font-family: var(--font-pixel); font-weight: 700; color: var(--accent); font-size: 0.95rem; }
.crow__body b { display: block; font-family: var(--font-mono); font-weight: 700; font-size: 0.98rem; }
.crow__body span { color: var(--muted); font-size: 0.9rem; line-height: 1.45; }

/* integration list */
.feature-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin-top: 2.5rem; }
.feature-list li { border-left: 2px solid var(--accent); padding-left: 1rem; }
.feature-list b { font-family: var(--font-pixel); font-size: 1.05rem; display: block; margin-bottom: 0.3rem; }
.feature-list span { color: var(--muted); font-size: 0.98rem; }

/* specs table */
.specs { margin-top: 2rem; border-top: 1px solid var(--line); }
.specs .spec {
  display: grid; grid-template-columns: 12rem 1fr; gap: 1rem;
  padding: 0.85rem 0; border-bottom: 1px solid var(--line);
}
.specs .spec dt { font-family: var(--font-crt); font-size: 1.2rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.specs .spec dd { margin: 0; font-family: var(--font-mono); }
.specs .spec dd .hl { color: var(--accent); }

/* naming / status callout */
.callout {
  border: 2px solid var(--accent);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: 1rem;
  position: relative;
}
.callout__star { font-family: var(--font-pixel); color: var(--accent); font-size: 2rem; line-height: 1; }
.callout h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin: 0.5rem 0 1rem; }
.callout p { max-width: 62ch; }
.callout a.mail { color: var(--accent); border-bottom: 2px solid var(--accent); }

/* ---- footer ------------------------------------------------------------- */
.site-footer { border-top: 2px solid var(--line-strong); padding-block: 3rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 1.5rem 3rem; align-items: flex-end; justify-content: space-between; }
.footer__tag { font-family: var(--font-pixel); font-size: 1.3rem; max-width: 22ch; }
.footer__tag .star { color: var(--accent); }
.footer__meta { font-family: var(--font-crt); font-size: 1.15rem; color: var(--muted); letter-spacing: 0.04em; text-align: right; }
.footer__meta b { color: var(--fg); font-weight: 400; }

/* ---- responsive --------------------------------------------------------- */
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero__panel { order: -1; }
  .hero__panel img { max-width: 300px; }
  .nav { display: none; }
  .specs .spec { grid-template-columns: 1fr; gap: 0.15rem; }
}

/* ---- reduced motion ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blink { animation: none; }
  .crt-scanlines::after, .crt-scanlines::before { opacity: 0.02; }
}