:root {
  --bg: #0a0b10;
  --text: #ffffff;
  --muted: #b3b3c6;
  --green: #32d400;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Montserrat', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;

  /* subtle grid background */
  background-image:
    radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  position: relative;
  overflow: hidden;
}

/* Content block */
.hero-content {
  max-width: 900px;
  width: 100%;
  text-align: left;
  position: relative;
  z-index: 1;
}

/* Typography */
.hero-title {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.green {
  color: var(--green);
}

.white {
  color: var(--text);
}

.signature {
  color: var(--green);
}

/* Subtitle */
.hero-subtitle {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 40px;
}

/* Buttons */
.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 30px;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-primary {
  background: var(--green);
  color: #000;
  box-shadow: 0 0 28px rgba(50, 212, 0, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(50, 212, 0, 0.6);
}

.btn-outline {
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--green);
  color: var(--green);
}

/* Mobile */
@media (max-width: 600px) {
  .hero-title {
    font-size: clamp(2.2rem, 8vw, 3rem);
  }
}

/* ---------- Lava Lamp Background ---------- */

.lava-lamp {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.lava-lamp span {
  position: absolute;
  bottom: -30%;
  width: 420px;
  height: 420px;
  background: radial-gradient(
    circle,
    rgba(50, 212, 0, 0.35) 0%,
    rgba(50, 212, 0, 0.15) 45%,
    transparent 70%
  );
  filter: blur(60px);
  animation: lavaFloat 22s linear infinite;
  opacity: 0.8;
}

.lava-lamp span:nth-child(1) {
  left: 10%;
  animation-duration: 26s;
  animation-delay: -4s;
}

.lava-lamp span:nth-child(2) {
  left: 45%;
  width: 520px;
  height: 520px;
  animation-duration: 32s;
  animation-delay: -12s;
}

.lava-lamp span:nth-child(3) {
  left: 70%;
  width: 360px;
  height: 360px;
  animation-duration: 28s;
  animation-delay: -8s;
}

@keyframes lavaFloat {
  0% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0;
  }
  10% {
    opacity: 0.9;
  }
  50% {
    transform: translateY(-60vh) translateX(40px) scale(1.05);
  }
  90% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(-120vh) translateX(-40px) scale(1);
    opacity: 0;
  }
}

/* ---------- Top Navigation ---------- */
.top-nav {
  position: fixed;
  top: 24px;
  right: 32px;
  z-index: 100;
}

.nav-link {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.25s ease;
}

.nav-link:hover {
  color: #32e875;
}