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

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

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

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

::selection {
  background: #A8E6CF;
  color: #0D1B2A;
}

/* ========== SCROLL REVEAL ========== */
.scroll-reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
  }

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

/* ========== NAVBAR ========== */
#navbar {
  background: transparent;
}

#navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(13, 27, 42, 0.08);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #2eb063;
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile menu */
#mobile-menu {
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-link {
  display: block;
}

/* Hamburger animation */
#menu-toggle.open .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

#menu-toggle.open .menu-line:nth-child(3) {
  width: 24px;
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== FLOATING ANIMATIONS ========== */
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes float-delayed {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-15px) scale(1.03); }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-float-delayed {
  animation: float-delayed 8s ease-in-out infinite;
  animation-delay: 1s;
}

/* ========== BUTTON HOVER EFFECTS ========== */
a {
  text-decoration: none;
}

/* ========== FOCUS STYLES ========== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #2eb063;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 640px) {
  .font-serif {
    font-size: clamp(2rem, 8vw, 3rem);
  }
}

/* ========== LOADING STATE ========== */
body.loading * {
  transition: none !important;
  animation: none !important;
}