/* Abyss Signal landing page */
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { background: #061c22; color: #cfeeee; }
html { overflow-x: hidden; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.55;
}
main { max-width: 1060px; margin: 0 auto; padding: 0 20px; }
h1, h2 { font-family: Georgia, "Times New Roman", serif; letter-spacing: 0.02em; }
h2 { font-size: 1.45rem; margin: 10px 0 16px; color: #9fe8ff; }
a { color: #54ffc8; }

/* Hero */
#hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid rgba(84, 255, 200, 0.22);
}
#hero-preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
#hero-copy {
  position: relative;
  z-index: 2;
  max-width: 560px;
  padding: 40px 28px;
  margin-left: clamp(16px, 6vw, 72px);
  background: linear-gradient(105deg, rgba(4, 20, 25, 0.92) 55%, rgba(4, 20, 25, 0.55) 100%);
  border: 1px solid rgba(84, 255, 200, 0.28);
  border-radius: 14px;
  backdrop-filter: blur(2px);
}
#hero-copy h1 {
  font-size: clamp(2.3rem, 6vw, 3.6rem);
  color: #eafff8;
  text-shadow: 0 0 24px rgba(84, 255, 200, 0.35);
}
.tagline { margin: 12px 0 20px; color: #a9d8d2; font-size: 1.02rem; }
#play-now, .cta {
  display: inline-block;
  background: linear-gradient(180deg, #5fffcf, #2fd6ab);
  color: #04282a;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 34px;
  border-radius: 10px;
  box-shadow: 0 6px 22px rgba(84, 255, 200, 0.35);
}
#play-now:hover, .cta:hover { filter: brightness(1.12); }
.hero-note { margin-top: 14px; font-size: 0.85rem; color: #7fb8ae; }

/* Gallery */
#gallery-section, #features-section, #controls { padding: 44px 0 8px; }
#gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
#gallery figure {
  background: #0a2b31;
  border: 1px solid rgba(84, 255, 200, 0.2);
  border-radius: 12px;
  overflow: hidden;
}
#gallery img { width: 100%; height: auto; display: block; }
#gallery figcaption { padding: 10px 12px; font-size: 0.88rem; color: #8fd7cc; }

/* Features */
#features { list-style: none; }
#features li {
  padding: 12px 14px 12px 40px;
  position: relative;
  border-left: 3px solid rgba(84, 255, 200, 0.45);
  background: rgba(10, 43, 49, 0.55);
  border-radius: 0 10px 10px 0;
  margin-bottom: 10px;
}
#features li::before {
  content: "◉";
  position: absolute;
  left: 14px;
  color: #ffb454;
}
#features b { color: #eafff8; }

/* Controls */
#controls dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
#controls dl div {
  background: rgba(10, 43, 49, 0.55);
  border: 1px solid rgba(84, 255, 200, 0.18);
  border-radius: 10px;
  padding: 10px 14px;
}
#controls dt {
  font-family: ui-monospace, "Cascadia Mono", monospace;
  color: #ffd9a0;
  font-weight: 700;
  font-size: 0.95rem;
}
#controls dt span { color: #8fd7cc; font-weight: 400; }
#controls dd { color: #a9d8d2; font-size: 0.92rem; }
.cta { margin-top: 20px; }

footer {
  margin-top: 52px;
  padding: 22px 20px 30px;
  border-top: 1px solid rgba(84, 255, 200, 0.18);
  text-align: center;
  color: #6fa8a0;
  font-size: 0.88rem;
}

@media (max-width: 420px) {
  #hero { min-height: 560px; align-items: flex-end; }
  #hero-copy { margin: 0 10px 12px; padding: 22px 18px; }
  .tagline { font-size: 0.95rem; }
}