/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  overflow-x: hidden;
}

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

/* Navbar */
.nav-logo {
  transition: color 0.4s ease;
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #2dd4bf;
  transition: width 0.3s ease;
}

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

#navbar.scrolled .nav-logo,
#navbar.scrolled .nav-link,
#navbar.scrolled .menu-line {
  color: #0f172a;
}

#navbar.scrolled .nav-link {
  color: #0f172a;
}

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

/* Mobile Menu */
.menu-line {
  transition: all 0.3s ease;
}

#menu-toggle.active .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
  width: 6px;
  transform: rotate(-45deg) translate(3px, -3px);
}

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

.mobile-link {
  transition: color 0.3s ease;
}

/* Hero Animations */
.hero-subtitle {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards 0.3s;
}

.hero-title {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 0.5s;
}

.hero-desc {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards 0.7s;
}

.hero-cta {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards 0.9s;
}

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

.hero-scroll-indicator {
  opacity: 0;
  animation: fadeIn 1s ease forwards 1.5s;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

.animate-scroll-dot {
  animation: scrollDot 1.5s ease-in-out infinite;
}

/* Section Labels */
.section-label {
  letter-spacing: 0.25em;
}

/* Scroll Reveal (below fold only, progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
  .reveal-left,
  .reveal-right,
  .reveal-up {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .reveal-left {
    transform: translateX(-40px);
  }

  .reveal-right {
    transform: translateX(40px);
  }

  .reveal-up {
    transform: translateY(40px);
  }

  .reveal-left.revealed,
  .reveal-right.revealed,
  .reveal-up.revealed {
    opacity: 1;
    transform: translateX(0) translateY(0);
  }
}

/* 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-left,
  .reveal-right,
  .reveal-up {
    opacity: 1;
    transform: none;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid #14b8a6;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: #0d9488;
  color: #f0fdfa;
}