:root {
  --bg: #080814;
  --bg-elevated: #12121e;
  --fg: #f2f2f2;
  --muted: #9a9aaa;
  --cyan: #00e5e5;
  --cyan-dim: #007777;
  --border: #333344;
  --accent: #0066cc;
  --danger: #ff6666;
  --max: 1100px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 8, 20, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--fg);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.brand img { width: 40px; height: 40px; object-fit: contain; }
.brand:hover { text-decoration: none; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--fg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.25rem;
  border-radius: 4px;
  border: 0;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-cyan {
  background: var(--cyan);
  color: #000;
}
.btn-ghost {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan-dim);
}

/* Hero */
.hero {
  display: grid;
  gap: 2rem;
  padding: 2.5rem 0 3rem;
  align-items: start;
}
@media (min-width: 860px) {
  .hero {
    grid-template-columns: 1fr 1.15fr;
    padding: 3.5rem 0 4rem;
  }
}
.eyebrow {
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}
.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  line-height: 1.15;
  font-weight: 800;
}
.hero .lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 42ch;
  margin: 0 0 1.25rem;
}
.features-summary {
  margin: 0 0 0.65rem;
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--fg);
}
.feature-list {
  margin: 0 0 2.75rem;
  padding-left: 1.2rem;
  color: var(--muted);
  font-size: 1.05rem;
}
.feature-list li { margin: 0.4rem 0; }
.power-heading {
  margin: 0 0 0.55rem;
  font-size: clamp(1.65rem, 3.4vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
}
.power-copy {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
  max-width: 42ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero-visual {
  position: relative;
}
.device-frame {
  border: 1px solid var(--border);
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
}
.device-frame img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
.caption {
  margin-top: 0.6rem;
  color: var(--muted);
  font-size: 0.8rem;
}

/* Sections */
.section {
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--border);
}
.section h2 {
  margin: 0 0 0.5rem;
  font-size: 1.6rem;
}
.section .sub {
  color: var(--muted);
  margin: 0 0 1.75rem;
  max-width: 50ch;
}

.cards {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 700px) {
  .cards.two { grid-template-columns: 1fr 1fr; }
}
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
}
.card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.price {
  font-size: 2rem;
  font-weight: 800;
  margin: 0.75rem 0 0.25rem;
}
.price span { font-size: 0.95rem; color: var(--muted); font-weight: 600; }
.card ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.card ul li { margin: 0.35rem 0; }
.platform-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.25rem;
}

.contact-layout {
  display: grid;
  gap: 2rem;
  grid-template-areas:
    "details"
    "form";
}
@media (min-width: 800px) {
  .contact-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(16rem, 0.85fr);
    grid-template-areas: "form details";
    column-gap: 3rem;
    align-items: start;
  }
}
.contact-form-col { grid-area: form; }
.contact-intro { max-width: 58ch; }
.contact-details {
  grid-area: details;
  text-align: right;
  color: var(--fg);
  font-size: 1.02rem;
  line-height: 1.85;
}
.contact-details p { margin: 0; }
.contact-details a { font-weight: 600; }

.contact-form {
  display: grid;
  gap: 0.45rem;
  max-width: 36rem;
}
.contact-form label {
  margin-top: 0.85rem;
  font-weight: 600;
  color: var(--fg);
}
.contact-form label:first-of-type { margin-top: 0; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 6px;
  padding: 0.85rem 1rem;
  font: inherit;
}
.contact-form textarea {
  min-height: 10.5rem;
  resize: vertical;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #6a6a7a;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
  border-color: var(--cyan-dim);
}
.contact-form .btn {
  justify-self: start;
  margin-top: 1rem;
}

/* Download modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}
.modal-backdrop.open { display: flex; }
.modal {
  width: min(100%, 420px);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
}
.modal-head {
  display: grid;
  grid-template-columns: 40px 1fr 40px;
  align-items: center;
  margin: 0 0 0.75rem;
}
.modal-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}
.modal h2 {
  margin: 0;
  font-size: 1.25rem;
  text-align: center;
}
.modal p { color: var(--muted); margin: 0 0 0.55rem; font-size: 0.95rem; }
.modal .dl-version {
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 600;
  margin: 0 0 1rem;
}
.modal .stack { display: grid; gap: 0.75rem; }
.modal .btn {
  width: 100%;
  position: relative;
  justify-content: center;
}
.modal .btn-icon {
  position: absolute;
  left: 1rem;
  width: 1.2rem;
  height: 1.2rem;
  fill: currentColor;
}
.dl-windows-note {
  margin: 0.85rem 0 0;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0c0c18;
}
.dl-windows-note p {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
  margin: 0 0 0.55rem;
}
.dl-windows-note p:last-child { margin-bottom: 0; }
.dl-windows-note strong { color: #ffffff; font-weight: 700; }
.modal-close {
  margin-top: 1rem;
  background: none;
  border: 0;
  color: var(--cyan);
  cursor: pointer;
  text-decoration: underline;
  font: inherit;
}

.platforms {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}
@media (min-width: 700px) {
  .platforms { grid-template-columns: 1fr 1fr; }
}
.platform-card img,
.platform-card .mock {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}
.mock {
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(180deg, #1a1a28 0%, #0c0c14 100%);
  position: relative;
  overflow: hidden;
}
.mock::before {
  content: "BackTrax Player — Windows";
  position: absolute;
  left: 1rem;
  top: 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg);
}
.mock-grid {
  position: absolute;
  inset: 3rem 1rem 1rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}
.mock-grid span {
  background: #181828;
  border: 1px solid #2a2a3a;
  border-radius: 3px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}