/* ── Base & Utilities ── */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background-color: rgba(45, 122, 47, 0.15);
  color: #1a5c3a;
}

/* ── Animations ── */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float-delay {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(-2deg); }
}

.animate-float {
  animation: float 8s ease-in-out infinite;
}

.animate-float-delay {
  animation: float-delay 10s ease-in-out infinite;
  animation-delay: -3s;
}

/* ── Hero fade-in ── */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in-up.delay-100 { animation-delay: 0.1s; }
.fade-in-up.delay-200 { animation-delay: 0.2s; }
.fade-in-up.delay-300 { animation-delay: 0.3s; }
.fade-in-up.delay-500 { animation-delay: 0.5s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Scroll reveal ── */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
.scroll-reveal:nth-child(4) { transition-delay: 0.3s; }

/* ── Navbar ── */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
  background: rgba(254, 253, 248, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(26, 92, 58, 0.08);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
  border-radius: 1px;
}

.nav-link:hover::after {
  width: 100%;
}

/* ── Mobile menu ── */
.mobile-link {
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s ease;
}

#mobile-menu.open .mobile-link {
  opacity: 1;
  transform: translateY(0);
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* ── Form focus styles ── */
input:focus, textarea:focus {
  outline: none;
}

/* ── Smooth image loading ── */
img {
  background-color: rgba(26, 92, 58, 0.05);
}

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #fdf9ee;
}

::-webkit-scrollbar-thumb {
  background: #a3caa8;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #76af78;
}

/* ── Responsive adjustments ── */
@media (max-width: 640px) {
  h1 {
    font-size: 3rem !important;
    line-height: 1.1 !important;
  }

  h2 {
    font-size: 2.25rem !important;
  }
}