/* Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  overflow-x: hidden;
}

::selection {
  background: #A8E6CF;
  color: #0A2342;
}

/* Navbar */
#navbar {
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(10, 35, 66, 0.06);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #A8E6CF;
  transition: width 0.3s ease;
}

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

.nav-link:hover {
  color: #0A2342 !important;
}

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

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

.mobile-link {
  position: relative;
}

.mobile-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: #A8E6CF;
  transition: width 0.3s ease;
}

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

.menu-line {
  display: block;
}

#menu-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(3px, 3px);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(3px, -3px);
  width: 1.25rem;
}

/* Hero animations */
.hero-tag {
  animation: fadeUp 0.8s ease forwards;
  opacity: 0;
  transform: translateY(20px);
}

.hero-headline {
  animation: fadeUp 0.8s ease 0.15s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.hero-sub {
  animation: fadeUp 0.8s ease 0.3s forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Floating cards */
.card-float-slow {
  animation: floatSlow 6s ease-in-out infinite;
}

.card-float-medium {
  animation: floatMedium 5s ease-in-out infinite 0.5s;
}

.card-float-fast {
  animation: floatFast 4s ease-in-out infinite 1s;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

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

@keyframes floatFast {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
}

/* Scroll line */
.scroll-line {
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; height: 40px; }
  50% { opacity: 0.8; height: 56px; }
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  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; }

/* Menu hover effect */
#menu .space-y-5 > div {
  position: relative;
}

#menu .space-y-5 > div::after {
  content: '';
  position: absolute;
  bottom: -2.5px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, #A8E6CF, transparent);
  transition: width 0.4s ease;
}

#menu .space-y-5 > div:hover::after {
  width: 100%;
}

/* Form focus effects */
input:focus, textarea:focus {
  border-bottom-color: #0A2342 !important;
}

input:focus + label, textarea:focus + label {
  color: #0A2342;
}

/* Subtle image hover */
.rounded-2xl.overflow-hidden {
  will-change: transform;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  html {
    scroll-padding-top: 60px;
  }

  .hero-headline {
    font-size: 2.5rem !important;
  }

  .font-serif.text-4xl {
    font-size: 2rem !important;
  }
}

/* Prefers 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;
  }
}