:root {
  color-scheme: dark;
  --bg: #090a10;
  --panel: #11131d;
  --panel-2: #171a28;
  --line: #2b3044;
  --text: #f5f3ff;
  --muted: #a8aec2;
  --purple: #8b5cf6;
  --purple-light: #c4b5fd;
  --green: #8ee3b5;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 78% 12%, rgba(124, 58, 237, 0.18), transparent 30rem),
    linear-gradient(180deg, #0d0f18 0%, var(--bg) 62%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: inherit; }

.site-header {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img { width: 38px; height: 38px; filter: drop-shadow(0 8px 15px rgba(124, 58, 237, 0.3)); }

nav { display: flex; align-items: center; gap: 24px; }
nav a { color: var(--muted); font-size: 0.88rem; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--text); }

main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.hero {
  min-height: 670px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 76px;
  padding: 88px 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--purple-light);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(3.2rem, 7vw, 6.8rem); line-height: 0.94; letter-spacing: -0.065em; }
h1 span { color: var(--purple-light); }
h2 { margin-bottom: 0; font-size: clamp(1.75rem, 4vw, 2.8rem); letter-spacing: -0.04em; }
h3 { margin-bottom: 10px; font-size: 1.15rem; }
.lede { max-width: 650px; color: var(--muted); font-size: 1.08rem; line-height: 1.75; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.primary-button, .secondary-button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}
.primary-button { background: var(--purple); box-shadow: 0 12px 34px rgba(124, 58, 237, 0.3); }
.secondary-button { border-color: var(--line); background: rgba(255, 255, 255, 0.025); }
.primary-button:hover, .secondary-button:hover { transform: translateY(-1px); }

.console-card { padding: 20px; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(145deg, #1d2030, #10121a); box-shadow: var(--shadow); }
.console-screen { position: relative; aspect-ratio: 3 / 2; overflow: hidden; border: 12px solid #08090e; border-radius: 13px; background: linear-gradient(#392768 0 52%, #31285c 52% 100%); image-rendering: pixelated; }
.pixel-sun { position: absolute; top: 17%; right: 18%; width: 14%; aspect-ratio: 1; border-radius: 50%; background: #ffd48a; box-shadow: 0 0 44px rgba(255, 212, 138, 0.5); }
.pixel-ground { position: absolute; inset: 57% -10% -20%; background: repeating-linear-gradient(135deg, #4d8c75 0 18px, #3d735f 18px 36px); transform: skewY(-6deg); }
.pixel-actor { position: absolute; left: 43%; top: 48%; width: 11%; aspect-ratio: 0.8; background: linear-gradient(#edd9ff 0 25%, #7c3aed 25% 70%, #36205f 70%); box-shadow: 0 14px 0 -5px rgba(0,0,0,.28); }
.console-meta { display: flex; justify-content: space-between; padding: 16px 4px 0; color: var(--muted); font: 700 0.74rem ui-monospace, monospace; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 14px var(--green); }

.feature-section { padding: 70px 0 110px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin: 44px 0 22px; }
.feature-grid, .demo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature-grid article, .demo-card { border: 1px solid var(--line); border-radius: 14px; background: rgba(17, 19, 29, 0.8); }
.feature-grid article { min-height: 220px; padding: 24px; }
.feature-grid p, .demo-card span { color: var(--muted); line-height: 1.6; }
.feature-number { display: block; margin-bottom: 54px; color: var(--purple-light); font: 700 0.76rem ui-monospace, monospace; }

.player-main { max-width: 980px; padding: 72px 0 96px; }
.player-intro > h1 { max-width: 800px; font-size: clamp(2.8rem, 7vw, 5.6rem); }
.drop-zone { width: 100%; margin-top: 28px; padding: 32px; display: grid; justify-items: center; gap: 7px; border: 1px dashed #555d7d; border-radius: 14px; background: rgba(139, 92, 246, 0.055); color: var(--text); font: inherit; cursor: pointer; }
.drop-zone:hover, .drop-zone.drag-over, .drop-zone:focus-visible { border-color: var(--purple-light); background: rgba(139, 92, 246, 0.11); }
.drop-zone span { color: var(--muted); }
.drop-icon { width: 36px; height: 36px; margin-bottom: 6px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: 1.5rem; }
#rom-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.status { min-height: 24px; margin: 9px 0 0; color: var(--muted); font-size: 0.85rem; }
.status.error { color: #ff9f9f; }
.build-badge, .demo-tag { border: 1px solid rgba(142, 227, 181, 0.25); border-radius: 999px; background: rgba(142, 227, 181, 0.07); color: var(--green); font: 700 0.7rem ui-monospace, monospace; }
.build-badge { padding: 7px 10px; }
.demo-grid { grid-template-columns: repeat(2, 1fr); }
.demo-card { min-height: 180px; padding: 22px; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.demo-card:hover, .demo-card:focus-visible { border-color: var(--purple); transform: translateY(-2px); }
.demo-card strong { font-size: 1.04rem; }
.demo-tag { padding: 4px 7px; color: var(--green) !important; }
.emulator-wrap { display: none; }
.emulator-wrap.visible { display: block; }
.emulator-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
#game { width: 100%; aspect-ratio: 3 / 2; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #000; box-shadow: var(--shadow); }
.emulator-frame { width: 100%; height: 100%; display: block; border: 0; background: #000; }
.controls { margin: 12px 0 0; color: var(--muted); font-size: 0.8rem; }

footer { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 24px 0 32px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255, 255, 255, 0.08); color: var(--muted); font-size: 0.8rem; }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; }
  nav { gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
  nav a { font-size: 0.76rem; }
  .hero { min-height: 0; grid-template-columns: 1fr; gap: 48px; padding: 64px 0 80px; }
  .feature-grid, .demo-grid { grid-template-columns: 1fr; }
  .section-heading, footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .primary-button, .secondary-button, .demo-card { transition: transform 150ms ease, border-color 150ms ease, background 150ms ease; }
}