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

body {
  overflow-x: hidden;
}

::selection {
  background: #2DD4A8;
  color: #0A2342;
}

/* ── Floating Animations ── */
@keyframes float-slow {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

@keyframes float-medium {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes float-fast {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-16px); }
}

.animate-float-slow {
  animation: float-slow 6s ease-in-out infinite;
}

.animate-float-medium {
  animation: float-medium 4.5s ease-in-out infinite;
}

.animate-float-fast {
  animation: float-fast 3.5s ease-in-out infinite;
}

/* ── Navbar Scroll State ── */
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(10, 35, 66, 0.06), 0 4px 24px rgba(10, 35, 66, 0.06);
}

#navbar.scrolled .font-serif,
#navbar.scrolled span {
  color: #0A2342 !important;
}

/* ── Reveal on Scroll ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Custom Select Arrow ── */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ── Mobile Menu Transitions ── */
.mobile-link {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

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

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

/* ── Form Focus States ── */
input:focus, textarea:focus, select:focus {
  box-shadow: 0 0 0 3px rgba(45, 212, 168, 0.15);
}

/* ── Smooth Image Loading ── */
img {
  opacity: 1;
  transition: opacity 0.3s ease;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── Tablet ── */
@media (max-width: 768px) {
  .font-serif {
    line-height: 1.15;
  }
}