:root {
  --primary: #1e3a8a;
  --secondary: #facc15;
  --light: #a5a9c3d2;
  --dark: #020617;
  --white: #EAEFEF;
}

/* ================= RESET ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background: var(--light);
  color: var(--dark);
  line-height: 1.6;
}

/* ================= NAVBAR ================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 5vw;
  background: var(--primary);
  color: var(--white);
  position: relative;
}

.logo {
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--white);
  font-size: 1rem;
  position: relative;
}

/* Nav hover underline */
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 0.15rem;
  background: var(--secondary);
  transition: width 0.3s ease;
}

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

.menu-toggle {
  display: none;
  font-size: 1.6rem;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--white);
}

/* ================= HERO ================= */
.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 4rem;
  align-items: center;
  padding: 5rem 6vw;
  background-color: var(--white);
}

.hero-content h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.hero-content p {
  max-width: 42ch;
  margin-bottom: 2rem;
  font-size: 1.15rem;
}

.hero-image img {
  width: 100%;
  max-width: 38rem;
  height: auto;
  display: block;
}

/* ================= BUTTON ================= */
.cta-btn {
  display: inline-block;
  padding: 0.9rem 2.4rem;
  border-radius: 2rem;
  background: var(--secondary);
  color: var(--dark);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.25s ease;
}

.cta-btn:hover {
  background-color: rgb(243, 243, 15);
}

/* ================= FEATURES ================= */
.features {
  padding: 4rem 6vw;
  text-align: center;
}

.features h2 {
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  margin-bottom: 3rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 2.5rem;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 1.2rem;
}

/* ================= CATEGORIES ================= */
.categories {
  padding: 4rem 8vw;
  text-align: center;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.category-card {
  background: var(--primary);
  color: var(--white);
  padding: 1.6rem;
  border-radius: 0.6rem;
  font-weight: 600;
}

/* ================= CTA ================= */
.cta-section {
  padding: 4.5rem 6vw;
  background: var(--dark);
  color: var(--white);
  text-align: center;
}

.cta-section p {
  max-width: 44ch;
  margin: 1rem auto 2rem;
}

.contact-section{
  background: var(--light);
  color: var(--dark);
}

/* ================= FOOTER ================= */
.site-footer {
  background: var(--primary);
  color: #e5e7eb;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 3rem;
  padding: 4rem 6vw;
}

.footer-brand h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  max-width: 38ch;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a {
  color: #e5e7eb;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--secondary);
}

.footer-bottom {
  text-align: center;
  padding: 1.4rem;
  border-top: 0.1rem solid rgba(255, 255, 255, 0.2);
}

/* ================= TABLET ================= */
@media (max-width: 64em) {
  .hero {
    gap: 3rem;
  }
}

/* ================= MOBILE ================= */
@media (max-width: 40em) {

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem 0;
    background: var(--primary);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-0.5rem);
    transition: max-height 0.4s ease, opacity 0.25s ease, transform 0.3s ease;
  }

  .nav-links.active {
    max-height: 50vh;
    opacity: 1;
    transform: translateY(0);
  }

  .hero {
    padding: 3.5rem 6vw;
    text-align: center;
  }

  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}