/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }

/* ── Nav ── */
#nav {
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s, padding 0.3s;
}
#nav.scrolled {
  background: rgba(254, 253, 248, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(16, 185, 129, 0.1);
  padding: 0;
}
.nav-link { transition: background 0.2s, color 0.2s; }

/* ── Hero Gradient ── */
.hero-gradient {
  background: linear-gradient(135deg, #064e3b 0%, #047857 30%, #059669 55%, #10b981 80%, #34d399 100%);
}
.hero-bubbles .bubble {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

/* ── Hero Animations ── */
.hero-badge {
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}
.hero-headline {
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}
.hero-sub {
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}
.hero-btn-primary {
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}
.hero-btn-secondary {
  opacity: 0;
  animation: fadeUp 0.8s 1s forwards;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Buttons ── */
.hero-btn-primary {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.hero-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.4);
}
.hero-btn-secondary:hover {
  transform: translateY(-2px);
}

/* ── Tags ── */
.tag-emerald {
  display: inline-block;
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4em 1em;
  border-radius: 9999px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.tag-white {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #d1fae5;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4em 1em;
  border-radius: 9999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* ── Reveal on Scroll ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }

/* ── Product Cards ── */
.product-card {
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.product-card:hover {
  transform: translateY(-6px);
}

/* ── Send Button ── */
.btn-send {
  position: relative;
  overflow: hidden;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-send::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  border-radius: inherit;
}

/* ── Mobile Menu ── */
.menu-link {
  transition: transform 0.2s, opacity 0.2s;
}
.menu-link:hover {
  transform: scale(1.05);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #fdf9ed; }
::-webkit-scrollbar-thumb { background: #a7f3d0; border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: #6ee7b7; }

/* ── Selection ── */
::selection { background: rgba(16, 185, 129, 0.2); color: #064e3b; }