/* ===== BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  overflow-x: hidden;
}

/* ===== 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, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

#navbar.scrolled .nav-link {
  color: #334155;
}

#navbar.scrolled .font-serif {
  color: #0f172a;
}

/* ===== MOBILE MENU ===== */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu.closed {
  opacity: 0;
  pointer-events: none;
}

.menu-line {
  transition: all 0.3s ease;
}

#mobile-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

#mobile-toggle.active .menu-line:nth-child(2) {
  opacity: 0;
}

#mobile-toggle.active .menu-line:nth-child(3) {
  width: 20px;
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ===== FLOATING CARDS ===== */
@keyframes float1 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.floating-card-1 {
  animation: float1 4s ease-in-out infinite;
}

.floating-card-2 {
  animation: float2 5s ease-in-out infinite 0.5s;
}

.floating-card-3 {
  animation: float3 4.5s ease-in-out infinite 1s;
}

/* ===== SERVICE CARDS ===== */
.service-card {
  transform: translateY(0);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.service-card:hover {
  transform: translateY(-4px);
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Stagger delays */
.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; }

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

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