/* landing.css - Lumenfall marketing page: abyss indigo + bioluminescent mint. */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 800px at 70% -10%, #0a3550 0%, #051a2a 45%, #02101c 100%);
  color: #cfeef7; line-height: 1.6;
}
:root { --mint: #a8ffdf; --cyan: #7cf6ff; --teal: #6fc7d8; --amber: #ffc23c; }

.nav {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center;
  justify-content: space-between; padding: 12px 22px;
  background: rgba(3, 16, 26, 0.82); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(64, 178, 200, 0.25);
}
.brand { font-weight: 800; letter-spacing: 0.22em; color: var(--mint); }
.nav nav { display: flex; gap: 16px; align-items: center; }
.nav a { color: #bfe6f2; text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--mint); }
.nav-play {
  padding: 7px 16px; border-radius: 20px; font-weight: 700;
  background: linear-gradient(90deg, #22c98a, #2fffd0); color: #032018 !important;
}

.hero {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 28px; align-items: center;
  max-width: 1180px; margin: 0 auto; padding: 44px 22px 30px;
}
h1 {
  font-size: clamp(42px, 7vw, 84px); letter-spacing: 0.12em; line-height: 1.02;
  color: var(--mint); text-shadow: 0 0 34px rgba(47, 255, 208, 0.55), 0 0 90px rgba(47, 255, 208, 0.2);
}
.tagline { font-size: clamp(15px, 1.8vw, 20px); color: #a9d9e8; margin: 14px 0 22px; max-width: 34em; }
.micro { font-size: 12px; color: #5f97ab; margin-top: 10px; }
#play-now {
  display: inline-block; padding: 16px 34px; border-radius: 32px; text-decoration: none;
  font-weight: 800; letter-spacing: 0.12em; font-size: 16px;
  background: linear-gradient(90deg, #22c98a, #2fffd0); color: #032018;
  box-shadow: 0 0 34px rgba(47, 255, 208, 0.5); border: 1px solid rgba(168, 255, 223, 0.6);
}
#play-now:hover { filter: brightness(1.15); box-shadow: 0 0 50px rgba(47, 255, 208, 0.8); }

.hero-frame {
  position: relative; border-radius: 16px; padding: 10px;
  background: linear-gradient(160deg, rgba(12, 48, 66, 0.9), rgba(4, 20, 32, 0.9));
  border: 1px solid rgba(58, 255, 196, 0.35); box-shadow: 0 10px 60px rgba(0, 0, 0, 0.5);
}
#hero-preview { width: 100%; aspect-ratio: 16 / 10; display: block; border-radius: 10px; background: #03101a; }
.frame-tag {
  position: absolute; bottom: 18px; left: 22px; font-size: 10px; letter-spacing: 0.22em;
  color: var(--cyan); background: rgba(3, 16, 26, 0.7); padding: 4px 10px; border-radius: 12px;
}

.band { max-width: 1180px; margin: 0 auto; padding: 46px 22px; }
.band h2 {
  font-size: clamp(22px, 3.2vw, 34px); letter-spacing: 0.18em; color: var(--cyan);
  margin-bottom: 20px; text-shadow: 0 0 22px rgba(124, 246, 255, 0.35);
}
#features { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 26px; }
#features li {
  padding: 14px 16px; border-radius: 12px; font-size: 15px;
  background: rgba(8, 34, 50, 0.55); border: 1px solid rgba(64, 178, 200, 0.22);
}
#features b { color: var(--mint); }
#features li::before { content: "◈ "; color: var(--mint); }

.gallery .sub { color: #5f97ab; font-size: 13px; margin-top: -8px; margin-bottom: 18px; }
#gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
#gallery figure {
  margin-top: 18px; border-radius: 14px; overflow: hidden;
  background: rgba(8, 34, 50, 0.55); border: 1px solid rgba(64, 178, 200, 0.22);
}
#gallery img { width: 100%; display: block; }
#gallery figcaption { padding: 10px 12px; font-size: 13px; color: var(--teal); }

.cols { display: grid; grid-template-columns: 1.1fr 1fr; gap: 30px; }
.cols h3 { color: var(--mint); letter-spacing: 0.1em; font-size: 16px; margin-bottom: 8px; }
.cols p, .keys { font-size: 15px; color: #bfe6f2; }
.cols b { color: var(--mint); }
.keys { list-style: none; }
kbd {
  display: inline-block; min-width: 22px; text-align: center; padding: 2px 7px; margin-right: 2px;
  border-radius: 6px; background: #0b2a3c; border: 1px solid #2c6a86; color: var(--cyan);
  font-family: ui-monospace, monospace; font-size: 12px;
}
.big-cta {
  display: inline-block; margin-top: 26px; padding: 14px 30px; border-radius: 28px;
  text-decoration: none; font-weight: 800; letter-spacing: 0.1em;
  background: linear-gradient(90deg, #ff9a3c, #ffc23c); color: #2b1500;
  box-shadow: 0 0 30px rgba(255, 154, 60, 0.4);
}
footer { border-top: 1px solid rgba(64, 178, 200, 0.2); padding: 26px 22px 34px; text-align: center; }
footer p { font-size: 12px; color: #55889c; max-width: 760px; margin: 0 auto; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .hero-frame { order: 2; }
  #features, .cols { grid-template-columns: 1fr; }
  .nav nav { gap: 10px; }
  .nav a:not(.nav-play) { display: none; }
}