* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: var(--border-radius);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 16px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
}

h1 {
  font-size: 64px;
}

h2 {
  font-size: 48px;
}

h3 {
  font-size: 32px;
}

@media (width <= 768px) {
  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 32px;
  }

  h3 {
    font-size: 24px;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* Layout Components */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-gutter);
}

@media (width >= 1024px) {
  .container {
    padding: 0 var(--spacing-margin-desktop);
  }
}

section {
  padding: var(--spacing-section-gap) 0;
}

main > section:first-of-type {
  padding-top: 120px;
}

@media (width <= 768px) {
  section {
    padding: var(--spacing-margin-mobile) 0;
  }

  main > section:first-of-type {
    padding-top: 140px;
  }
}

/* Header */

header {
  padding: 16px 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgb(251 249 249 / 80%);
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-secondary);
}

.cta-button {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding: 12px 24px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.cta-button:hover {
  opacity: 0.8;
}

@media (width <= 768px) {
  .header-content {
    flex-wrap: wrap;
    gap: 8px 16px;
  }

  .logo {
    width: 100%;
    text-align: center;
  }

  .nav-links {
    flex: 1;
    gap: 16px;
    justify-content: center;
  }
}

/* Footer */

footer {
  padding: var(--spacing-section-gap) 0;
  background-color: var(--color-surface-container-low);
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 32px;
}

.footer-socials a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: opacity 0.3s ease;
}

.footer-socials a:hover {
  opacity: 0.7;
}

.footer-socials svg {
  width: 20px;
  height: 20px;
  fill: currentcolor;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.3s cubic-bezier(0.25, 1, 0.5, 1),
    box-shadow 0.3s cubic-bezier(0.25, 1, 0.5, 1),
    background-color 0.3s ease,
    color 0.3s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgb(0 0 0 / 15%);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgb(0 0 0 / 10%);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}