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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-body);
  background: var(--color-white);
  color: var(--color-black);
  line-height: 1.6;
}

.scroll-snap-container {
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
}

.scroll-snap-section {
  scroll-snap-align: start;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-3xl) var(--spacing-6xl);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-index-sticky);
  padding: var(--spacing-sm) var(--spacing-xl);
  background: var(--color-white);
  border-bottom: 4px solid var(--color-black);
  width: auto;
  min-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  transition: min-width 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

.header.collapsed {
  min-width: 0;
}

.header-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
}

.logo {
  font-family: var(--font-family-display);
  font-size: var(--font-size-xl);
  color: var(--color-black);
  text-decoration: none;
}

.nav-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  position: fixed;
  top: 0;
  right: 0;
  padding: var(--spacing-sm) var(--spacing-xl);
  z-index: var(--z-index-sticky);
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1), opacity 0.3s ease;
}

.nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  font-family: var(--font-family-display);
  color: var(--color-black);
  text-decoration: none;
  font-size: var(--font-size-md);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all 0.3s ease;
}

.nav-link:hover {
  background: var(--color-black);
  color: var(--color-white);
}

.login-btn {
  font-family: var(--font-family-display);
  background: var(--color-black);
  color: var(--color-white);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-md);
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.login-btn:hover {
  background: var(--color-white);
  color: var(--color-black);
  border: 2px solid var(--color-black);
}

.header.collapsed .nav-container {
  transform: translateX(120%);
  opacity: 0;
  pointer-events: none;
}

.section-title {
  font-family: var(--font-family-display);
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-3xl);
  letter-spacing: -2px;
}

.footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-xl);
  text-align: center;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-link {
  color: var(--color-white);
  text-decoration: none;
  font-family: var(--font-family-display);
  font-size: var(--font-size-md);
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-copyright {
  font-size: var(--font-size-xs);
}

.scroll-hint {
  position: absolute;
  bottom: var(--spacing-3xl);
  font-family: var(--font-family-display);
  font-size: var(--font-size-lg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@media (max-width: 768px) {
  .scroll-snap-section {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .nav {
    display: none;
  }

  .logo-img {
    width: 30px;
    height: 30px;
  }
}