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

/* ===== NAVBAR ===== */
#navbar {
  background: rgba(242, 253, 244, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(125, 227, 190, 0.2);
}
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 20px rgba(10, 37, 64, 0.08);
}

/* ===== MOBILE MENU ===== */
#mobileMenu {
  animation: slideDown 0.25s ease-out;
}
#mobileMenu.hidden {
  display: none;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(28px);
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== FLOAT ANIMATION ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.animate-float {
  animation: float 3.5s ease-in-out infinite;
}

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

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f0fdf4; }
::-webkit-scrollbar-thumb { background: #bdf0db; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #7de3be; }

/* ===== FOCUS VISIBLE ===== */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid #4fd3a4;
  outline-offset: 2px;
  border-radius: 4px;
}