/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { -webkit-font-smoothing: antialiased; }

/* ===== NAVBAR ===== */
#navbar {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
#navbar.scrolled {
  background: rgba(254, 253, 248, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(6, 79, 70, 0.08);
}

/* ===== HERO FLOATING CARDS ===== */
.floating-card-1 {
  animation: float1 4s ease-in-out infinite;
}
.floating-card-2 {
  animation: float2 5s ease-in-out infinite;
}
.floating-card-3 {
  animation: float3 4.5s ease-in-out infinite;
}
@keyframes float1 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}
@keyframes float2 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(8px); }
}
@keyframes float3 {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(-6px) translateX(4px); }
}

/* ===== SERVICE CARDS ===== */
.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.service-card:hover::after {
  transform: scaleX(1);
}

/* ===== PROJECT CARDS ===== */
.project-card {
  position: relative;
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1.5rem;
  padding: 2px;
  background: linear-gradient(135deg, transparent 40%, rgba(6, 95, 70, 0.15));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.project-card:hover::before {
  opacity: 1;
}

/* ===== PROCESS CARDS ===== */
.process-card {
  position: relative;
}
.process-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1.5rem;
  padding: 1px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.3), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.process-card:hover::before {
  opacity: 1;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-2px);
}

/* ===== MOBILE MENU ===== */
.mobile-link {
  display: block;
}

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.revealed {
    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; }
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 767px) {
  .floating-card-1,
  .floating-card-2,
  .floating-card-3 {
    display: none;
  }
}