/* ========== BASE & RESET ========== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  overflow-x: hidden;
}

::selection {
  background: rgba(52, 212, 184, 0.3);
  color: #fff;
}

img {
  max-width: 100%;
  height: auto;
}

/* ========== ANIMATIONS ========== */
@keyframes float-slow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}

@keyframes float-medium {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(-2deg); }
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.animate-float-slow {
  animation: float-slow 8s ease-in-out infinite;
}

.animate-float-medium {
  animation: float-medium 5s ease-in-out infinite;
}

.animate-scroll {
  animation: scroll 30s linear infinite;
}

.animate-scroll:hover {
  animation-play-state: paused;
}

/* ========== NAVBAR ========== */
#navbar {
  backdrop-filter: blur(0px);
  transition: background-color 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
  background-color: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

/* ========== FAQ ========== */
.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-content.open {
  max-height: 200px;
}

.faq-icon {
  flex-shrink: 0;
}

.faq-icon.rotated {
  transform: rotate(45deg);
}

/* ========== 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; }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #0a1628;
}

::-webkit-scrollbar-thumb {
  background: #1a3d70;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #34d4b8;
}

/* ========== FORM STYLES ========== */
input:focus, select:focus, textarea:focus {
  outline: none;
}

select option {
  background: #0a1628;
  color: #fff;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .font-serif {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }
}