/* Animation Styles */
@import 'variables.css';

/* Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn var(--transition-normal);
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Section Animation */
.terms-section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.terms-section.animate {
  opacity: 1;
  transform: translateY(0);
}

/* Button Hover Animation */
.primary-button {
  position: relative;
  overflow: hidden;
}

.primary-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s, height 0.5s;
}

.primary-button:hover::after {
  width: 300px;
  height: 300px;
}

/* Checkbox Animation */
.checkbox-container input ~ .checkmark {
  transition: all var(--transition-normal);
}

.checkbox-container .checkmark:after {
  transition: all var(--transition-normal);
}

/* TOC Link Hover Effect */
.toc-link {
  position: relative;
}

.toc-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

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

/* Header Background Transition */
header {
  transition: background-color var(--transition-normal);
}

header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
}

@media (prefers-color-scheme: dark) {
  header.scrolled {
    background-color: rgba(29, 29, 31, 0.95);
  }
}

/* Mobile Menu Animation */
.menu-active .menu-toggle span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-active .menu-toggle span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Animation */
.mobile-nav {
  position: fixed;
  top: 64px;
  left: 0;
  width: 100%;
  height: 0;
  background-color: var(--color-background);
  overflow: hidden;
  transition: height var(--transition-normal);
  z-index: 99;
}

.menu-active .mobile-nav {
  height: calc(100vh - 64px);
  border-top: 1px solid var(--color-border-light);
}