*, *::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;
}

/* Hero animation */
@keyframes heroZoom {
  from { transform: scale(1.1); }
  to { transform: scale(1); }
}

.animate-hero-zoom {
  animation: heroZoom 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* Hero text reveal */
.hero-sub {
  animation: fadeUp 0.8s ease forwards;
  animation-delay: 0.6s;
  opacity: 0;
}

.hero-title {
  animation: fadeUp 1s ease forwards;
  animation-delay: 0.9s;
  opacity: 0;
}

.hero-cta {
  animation: fadeUp 0.8s ease forwards;
  animation-delay: 1.4s;
  opacity: 0;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.reveal.delay-150 {
  transition-delay: 0.15s;
}

.reveal.delay-200 {
  transition-delay: 0.2s;
}

/* Section labels */
.section-label {
  display: block;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #0d9488;
  font-weight: 400;
}

/* Button styles */
.btn-primary {
  border: none;
  cursor: pointer;
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0.15em;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(13, 148, 136, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  text-decoration: none;
  font-family: 'Inter', system-ui, sans-serif;
  letter-spacing: 0.15em;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-secondary:hover {
  transform: translateY(-2px);
}

/* Menu items */
.menu-item {
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 1rem;
  transition: border-color 0.3s ease, padding-left 0.3s ease;
}

.menu-item:hover {
  border-color: #99f6e4;
  padding-left: 0.5rem;
}

.menu-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

/* Header state */
#header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

#header.scrolled #nav-logo {
  color: #0f172a;
}

#header.scrolled .nav-link {
  color: rgba(15, 23, 42, 0.7);
}

#header.scrolled .nav-link:hover {
  color: #0d9488;
}

#header.scrolled .menu-line {
  background: #0f172a;
}

/* Mobile menu */
.mobile-link {
  text-decoration: none;
  transition: color 0.3s ease, opacity 0.3s ease;
}

.mobile-link:hover {
  color: #5eead4;
}

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

/* Scroll indicator */
.scroll-indicator svg {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(6px); }
  60% { transform: translateY(3px); }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #0d9488;
  outline-offset: 2px;
}

/* 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 menu button animation */
.menu-line:first-child {
  transform-origin: center;
}

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

#menu-toggle.active .menu-line:last-child {
  transform: rotate(-45deg) translate(2px, -2px);
}

/* Image aspect ratios */
img {
  display: block;
  max-width: 100%;
}