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

:root {
  --white: #FFFFFF;
  --black: #000000;
  --purple: #6D28D9;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Switzer', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
}

h1, h2, h3 {
  font-family: 'Khand', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(3rem, 8vw, 5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  margin-bottom: 0.5rem;
}

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

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

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-family: 'Khand', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
}

.nav {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav a {
  font-size: 0.95rem;
}

.nav-cta {
  color: var(--purple);
  font-weight: 500;
}

.nav-cta:hover {
  text-decoration: underline;
}

/* Hero */
.hero {
  padding: 8rem 3rem 10rem;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--black);
  opacity: 0.85;
  max-width: 500px;
  margin-bottom: 2.5rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: 'Switzer', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
}

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

/* Features */
.features {
  padding: 6rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.features h2 {
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
}

.feature p {
  opacity: 0.85;
}

/* Newsletter */
.newsletter {
  padding: 8rem 3rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.newsletter h2 {
  margin-bottom: 0.75rem;
}

.newsletter > p {
  margin-bottom: 2rem;
  opacity: 0.85;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 400px;
  margin: 0 auto;
}

.newsletter-form input {
  padding: 1rem 1.25rem;
  font-family: 'Switzer', sans-serif;
  font-size: 1rem;
  border: 2px solid var(--black);
  background: var(--white);
}

.newsletter-form input::placeholder {
  opacity: 0.6;
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--purple);
}

.newsletter-form button {
  width: 100%;
}

.newsletter-message {
  margin-top: 1rem;
}

.newsletter-message.hidden {
  display: none;
}

.newsletter-message.success {
  color: var(--purple);
}

.newsletter-inline {
  padding: 4rem 3rem;
  text-align: left;
}

.newsletter-inline .newsletter-form {
  margin: 0;
}

/* Page hero (About, Projects) */
.page-hero {
  padding: 6rem 3rem 4rem;
  max-width: 800px;
  margin: 0 auto;
}

.page-hero h1 {
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: 1.2rem;
  opacity: 0.85;
}

/* Content blocks */
.content-block {
  padding: 3rem;
  max-width: 700px;
  margin: 0 auto;
}

.content-block h2 {
  margin-bottom: 1rem;
}

.content-block p {
  opacity: 0.9;
}

/* Footer */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer a {
  font-family: 'Khand', sans-serif;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-family: 'Switzer', sans-serif;
  font-weight: 400;
}

/* Responsive */
@media (min-width: 600px) {
  .newsletter-form {
    flex-direction: row;
  }

  .newsletter-form input {
    flex: 1;
  }

  .newsletter-form button {
    width: auto;
  }
}