:root {
  --scale: 1;
  --green: #b7d651;
  --green-soft: #cce868;
  --line: rgba(190,219,85,.95);
  --white: #f7f8f4;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: #020304; color: var(--white); }
body { overflow: hidden; }
.stage-shell {
  width: 100vw;
  height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #020304;
}
.stage-fit {
  width: calc(1366px * var(--scale));
  height: calc(768px * var(--scale));
  position: relative;
  flex: 0 0 auto;
}
.habitat-stage {
  position: relative;
  width: 1366px;
  height: 768px;
  overflow: hidden;
  transform: scale(var(--scale));
  transform-origin: top left;
}
.habitat-stage__bg {
  position: absolute;
  inset: 0;
  background: url('./assets/habitat-bg.png') center center / cover no-repeat;
}
.navbar {
  position: absolute;
  left: 12px;
  right: 12px;
  top: 8px;
  height: 58px;
  z-index: 20;
  display: grid;
  grid-template-columns: 220px 1fr 120px;
  align-items: center;
  padding: 0 28px;
  border: 1px solid rgba(190, 219, 85, .4);
  border-radius: 23px;
  background: rgba(0,0,0,.28);
  backdrop-filter: blur(6px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}
.brand__logo { width: 44px; height: 44px; object-fit: contain; filter: grayscale(1) contrast(1.05); }
.brand__text { display: grid; gap: 1px; line-height: .9; font-size: 16px; font-weight: 800; }
.brand__text strong { font-size: 1.18em; letter-spacing: .02em; }
.menu { justify-self: center; display: flex; gap: 48px; align-items: center; white-space: nowrap; }
.menu__link {
  position: relative; height: 58px; display: inline-flex; align-items: center;
  color: rgba(255,255,255,.86); text-decoration: none; font-size: 15px; font-weight: 650;
}
.menu__link:hover, .menu__link.is-active { color: #fff; }
.menu__link::after {
  content: ""; position: absolute; left: 50%; bottom: 13px; width: 0; height: 2px; border-radius: 999px;
  background: var(--green); transform: translateX(-50%); transition: width .18s ease;
}
.menu__link:hover::after, .menu__link.is-active::after { width: 54px; }
.sound-pill { justify-self: end; display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-size: 14px; font-weight: 800; }
.sound-pill img { width: 31px; height: 31px; object-fit: contain; }
.habitat-copy {
  position: absolute; left: 22px; top: 127px; width: 345px; z-index: 12;
}
.habitat-copy h1 {
  margin: 0 0 12px; color: var(--green-soft); font-size: 33px; line-height: 1.05; font-weight: 900;
}
.habitat-copy p {
  margin: 0; font-size: 14px; line-height: 1.48; color: rgba(255,255,255,.98);
}
.habitat-copy span { color: var(--green-soft); }
.countries-card {
  position: absolute; left: 20px; top: 490px; width: 287px; min-height: 208px; z-index: 12;
  padding: 16px 20px 18px; border: 2px solid var(--line); border-radius: 18px; background: rgba(0,0,0,.42);
}
.countries-card h2 {
  margin: 0 0 18px; color: var(--green-soft); font-size: 14px; font-weight: 900;
}
.country-list {
  list-style: none; margin: 0; padding: 0 0 0 10px; display: grid; gap: 7px;
}
.country-list li {
  position: relative; padding-left: 26px; font-size: 12px; line-height: 1.05; color: #fff;
}
.country-list li::before {
  content: ''; position: absolute; left: 0; top: 4px; width: 11px; height: 11px; background: #fff;
}
.habitat-map {
  position: absolute; left: 465px; top: 109px; width: 453px; height: auto; z-index: 10; object-fit: contain;
}
.fact-box {
  position: absolute; right: 38px; width: 252px; min-height: 61px; z-index: 12;
  padding: 18px 22px; border: 2px solid var(--line); border-radius: 6px; background: rgba(0,0,0,.18);
  display: flex; align-items: center; color: #fff; font-size: 14px; line-height: 1.22; font-weight: 800;
}
.fact-box--1 { top: 289px; }
.fact-box--2 { top: 382px; min-height: 72px; }
.fact-box--3 { top: 497px; min-height: 106px; }
@media (max-width: 520px) {
  .stage-shell { overflow: auto; justify-content: flex-start; align-items: flex-start; }
}


/* Audio interactivo del header */
.sound-pill {
  cursor: pointer;
  user-select: none;
  padding: 4px 7px;
  border-radius: 999px;
  transition: transform .18s ease, filter .18s ease, background .18s ease;
}
.sound-pill:hover {
  transform: translateY(-1px);
  filter: brightness(1.12);
  background: rgba(190, 219, 85, .08);
}
.sound-pill.is-playing {
  background: rgba(190, 219, 85, .12);
  text-shadow: 0 0 12px rgba(190, 219, 85, .45);
}
.sound-pill.is-playing img {
  animation: soundPulse .78s ease-in-out infinite alternate;
}
@keyframes soundPulse {
  from { transform: scale(.94); opacity: .78; }
  to { transform: scale(1.12); opacity: 1; }
}