/* ─── BASE ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { min-height: 100vh; }
img { display: block; max-width: 100%; }

/* ─── NAV ──────────────────────────────────────────────────────────── */
.nav-logo {
  transition: color 0.3s ease;
}
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* ─── MOBILE MENU ──────────────────────────────────────────────────── */
.mobile-link {
  transition: opacity 0.3s ease;
}
.mobile-link:hover {
  opacity: 0.7;
}

/* ─── HERO ─────────────────────────────────────────────────────────── */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}
.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #5f8737, transparent 70%);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #a3c37e, transparent 70%);
  bottom: -100px;
  left: -50px;
  animation-delay: -7s;
}
.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #c7dcb0, transparent 70%);
  top: 40%;
  left: 30%;
  animation-delay: -14s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ─── REVEAL ANIMATIONS (progressive enhancement) ─────────────────── */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s ease, transform 0.8s ease;
}
@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(30px);
  }
  .reveal-left {
    opacity: 0;
    transform: translateX(-30px);
  }
  .reveal-right {
    opacity: 0;
    transform: translateX(30px);
  }
  .reveal-up.visible,
  .reveal-left.visible,
  .reveal-right.visible {
    opacity: 1;
    transform: none;
  }
}

/* ─── HERO TAG ─────────────────────────────────────────────────────── */
.hero-tag {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.3s;
}
.hero-title {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.5s;
}
.hero-sub {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.7s;
}
.hero-cta {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.9s;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── SMOOTH SCROLL OFFSET ─────────────────────────────────────────── */
section[id] {
  scroll-margin-top: 80px;
}