/* Canopy Noise — shared styles for home + sub-pages */

:root {
  --deep-green: #0b2e1f;
  --mid-green: #164a30;
  --bright-green: #4fae75;
  --mist: #d8ede1;
  --dusk: #1c3a52;
  --night: #0a1a2b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--deep-green);
  color: var(--mist);
  line-height: 1.6;
}

a { color: var(--bright-green); }
a:hover { text-decoration: underline; }

.skip-link {
  position: absolute;
  left: -999px;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--mist);
  color: var(--deep-green);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  z-index: 10;
}

/* ---- canopy silhouette, layered with CSS gradients only (no images) ---- */
.canopy {
  position: relative;
  overflow: hidden;
}
.canopy::before,
.canopy::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10rem;
  pointer-events: none;
  background-repeat: repeat-x;
}
.canopy::before {
  height: 7rem;
  opacity: 0.55;
  background-image:
    radial-gradient(circle at 10% 100%, var(--deep-green) 0 3rem, transparent 3.1rem),
    radial-gradient(circle at 30% 100%, var(--deep-green) 0 4rem, transparent 4.1rem),
    radial-gradient(circle at 50% 100%, var(--deep-green) 0 3.5rem, transparent 3.6rem),
    radial-gradient(circle at 70% 100%, var(--deep-green) 0 4.2rem, transparent 4.3rem),
    radial-gradient(circle at 90% 100%, var(--deep-green) 0 3.3rem, transparent 3.4rem);
  background-size: 20% 100%;
}
.canopy::after {
  height: 9rem;
  opacity: 0.8;
  background-image:
    radial-gradient(circle at 15% 100%, var(--mid-green) 0 2.2rem, transparent 2.3rem),
    radial-gradient(circle at 40% 100%, var(--mid-green) 0 2.8rem, transparent 2.9rem),
    radial-gradient(circle at 65% 100%, var(--mid-green) 0 2.4rem, transparent 2.5rem),
    radial-gradient(circle at 88% 100%, var(--mid-green) 0 2.9rem, transparent 3rem);
  background-size: 25% 100%;
}

/* ---- slow gradient sky, one hue per section, no animation needed to read ---- */
.sky-dawn    { background: radial-gradient(circle at 50% 0%, var(--mid-green), var(--deep-green) 75%); }
.sky-day     { background: linear-gradient(to bottom, #1f5e3c, var(--deep-green)); }
.sky-dusk    { background: linear-gradient(to bottom, var(--dusk), var(--deep-green)); }
.sky-night   { background: linear-gradient(to bottom, var(--night), var(--deep-green)); }

/* ---- rain particles, generated by a few lines of JS, styling only here ---- */
.rain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.drop {
  position: absolute;
  top: -10%;
  width: 2px;
  height: 10vh;
  background: linear-gradient(to bottom, transparent, rgba(216, 237, 225, 0.35));
  animation: fall linear infinite;
}
@keyframes fall { to { transform: translateY(120vh); } }

/* ---- fireflies: CSS-only, fixed positions, no JS ---- */
.fireflies {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.firefly {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #e8ffb0;
  box-shadow: 0 0 6px 2px rgba(232, 255, 176, 0.8);
  animation: glow 3.2s ease-in-out infinite;
}
.firefly:nth-child(1) { left: 12%; top: 70%; animation-delay: 0s; }
.firefly:nth-child(2) { left: 28%; top: 40%; animation-delay: 0.6s; }
.firefly:nth-child(3) { left: 46%; top: 80%; animation-delay: 1.2s; }
.firefly:nth-child(4) { left: 64%; top: 55%; animation-delay: 1.8s; }
.firefly:nth-child(5) { left: 80%; top: 30%; animation-delay: 2.4s; }
.firefly:nth-child(6) { left: 92%; top: 65%; animation-delay: 0.3s; }
@keyframes glow {
  0%, 100% { opacity: 0.15; transform: scale(0.8); }
  50% { opacity: 0.9; transform: scale(1.3); }
}

@media (prefers-reduced-motion: reduce) {
  .drop { animation: none; display: none; }
  .firefly { animation: none; opacity: 0.5; }
}

h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  z-index: 1;
}
h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--bright-green);
}
.tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  max-width: 32rem;
  margin: 0 0 1.75rem;
  color: var(--mist);
  opacity: 0.9;
  z-index: 1;
}

.btn {
  z-index: 1;
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  background: var(--bright-green);
  color: var(--deep-green);
  font-weight: 700;
  text-decoration: none;
  font-size: 1rem;
}
.btn.disabled {
  background: transparent;
  border: 2px solid var(--bright-green);
  color: var(--bright-green);
  cursor: default;
}

.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem;
}

section, article.page {
  max-width: 48rem;
  margin: 0 auto;
  padding: 3rem 1.25rem;
  position: relative;
}

ul.sounds {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
ul.sounds li {
  background: var(--mid-green);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  font-size: 1.05rem;
}

.faq dt {
  font-weight: 700;
  color: var(--bright-green);
  margin-top: 1.25rem;
}
.faq dd {
  margin: 0.25rem 0 0;
}

nav.crumbs {
  max-width: 48rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

nav.related {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
}
nav.related ul {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

footer {
  text-align: center;
  padding: 2rem 1.25rem;
  font-size: 0.9rem;
  opacity: 0.7;
  border-top: 1px solid var(--mid-green);
}