/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }

/* ── Custom Properties ── */
:root {
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --indigo-500: #6366f1;
  --slate-900: #0f172a;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--teal-500), var(--indigo-500));
  color: #fff;
  padding: 0.875rem 2rem;
  border-radius: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(13,148,136,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(13,148,136,0.4);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(10px);
  color: var(--slate-900);
  padding: 0.875rem 2rem;
  border-radius: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.5);
  transition: all 0.3s ease;
}
.btn-secondary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

/* ── Navbar ── */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#navbar.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal-500), var(--indigo-500));
  border-radius: 1px;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

/* ── Mobile Menu ── */
.mobile-link {
  position: relative;
  padding-left: 1rem;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}
.mobile-link:hover {
  border-left-color: var(--teal-500);
  color: var(--teal-600);
}

/* ── Service Cards ── */
.service-card {
  background: #fff;
  border-radius: 1.5rem;
  padding: 0.25rem;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.4s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
  border-color: rgba(13,148,136,0.2);
}

/* ── Floating Cards Animation ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
@keyframes float-delayed {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}
.animate-float { animation: float 4s ease-in-out infinite; }
.animate-float-delayed { animation: float-delayed 5s ease-in-out infinite 1s; }

/* ── Scroll Reveal ── */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── Utility ── */
@media (max-width: 767px) {
  html { scroll-padding-top: 70px; }
}
</style>