/* ── Base & Utilities ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

::selection { background: rgba(45, 212, 191, 0.3); color: #f0fdf9; }

/* ── Navbar ── */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#navbar.scrolled {
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05), 0 20px 40px rgba(0,0,0,0.3);
}

.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: #2dd4bf;
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: 1px;
}
.nav-link:hover::after,
.nav-link.active::after { width: 60%; }

/* ── Floating Shapes (Hero Background) ── */
.floating-shape {
  position: absolute;
  opacity: 0.08;
  pointer-events: none;
}
.shape-1 {
  top: 12%;
  left: 5%;
  width: 120px;
  height: 120px;
  background: #2dd4bf;
  border-radius: 30px;
  animation: floatA 8s ease-in-out infinite;
}
.shape-2 {
  top: 25%;
  right: 8%;
  width: 80px;
  height: 80px;
  background: #14b8a6;
  border-radius: 50%;
  animation: floatB 6s ease-in-out infinite;
}
.shape-3 {
  bottom: 20%;
  left: 15%;
  width: 60px;
  height: 60px;
  border: 3px solid #2dd4bf;
  border-radius: 16px;
  transform: rotate(45deg);
  animation: floatC 7s ease-in-out infinite;
  opacity: 0.06;
}
.shape-4 {
  top: 60%;
  right: 5%;
  width: 100px;
  height: 100px;
  background: #0d9488;
  border-radius: 24px;
  animation: floatA 9s ease-in-out infinite reverse;
}
.shape-5 {
  top: 40%;
  left: 45%;
  width: 40px;
  height: 40px;
  background: #5eead4;
  border-radius: 50%;
  animation: floatB 5s ease-in-out infinite;
}

@keyframes floatA {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(5deg); }
}
@keyframes floatB {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}
@keyframes floatC {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(50deg) translateY(-25px); }
}

/* ── Floating Stat Cards ── */
.floating-card {
  animation: floatCard 4s ease-in-out infinite;
}
.card-1 { animation-delay: 0s; }
.card-2 { animation-delay: 1.5s; }
.card-3 { animation-delay: 0.8s; }

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ── Service Cards ── */
.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #2dd4bf, #14b8a6);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.service-card:hover::before { opacity: 1; }

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  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; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ── Mobile Menu ── */
#mobileMenu {
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-link { transition: all 0.2s ease; }

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

/* ── Focus Visible ── */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid #2dd4bf;
  outline-offset: 2px;
  border-radius: 4px;
}