:root {
    --button-one: hsl(171, 66%, 44%);
    --button-two: hsl(233, 100%, 69%);
    --grayish-blue: hsl(210, 10%, 33%);
    --darkgrayish-blue: hsl(201, 11%, 66%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
  
body {
    font-family: 'Bai Jamjuree', sans-serif, 'Poppins', Arial, sans-serif;
    line-height: 1.6;
    background: rgba(255, 255, 255, 0.8);
}

header {
    position: relative;
    height: 30vh;
    background-image: url(images/bg-header-desktop.png);
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 80px;
}

.logo{
    width: 100px;  /* Responsive logo size */
    max-width: 80%;
    height: auto;
}

section {
    margin-bottom: 70px;
    padding: 20px;
}

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


h1, h2{
    font-family: 'Bai Jamjuree', sans-serif;
    font-weight: 600; /* Semi-bold */
    font-size: 2rem; /* ~40px */
    color: var(--grayish-blue);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

p {
    font-size: 18px; /* ~18px */
    color: var(--darkgrayish-blue); /* Medium gray */
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 2rem; 
}

.side p{
    margin: 0;
}
  
button {
    padding: 12px 30px;
    border: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 5px; /* Small gap between buttons */
    color: #fafafa;
}

/* iOS Button */
.ios {
  background-color: var(--button-one); /* Bright blue */
  margin: 20px auto 20px auto;
  box-shadow: inset 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Mac Button */
.mac {
  background-color: var(--button-two); /* Light gray */
  margin: 20px auto 20px auto;
  box-shadow: inset 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Hover Effects */
.ios:hover {
    background-color: #5dccbb; /* Darker blue */
}

.mac:hover {
    background-color: #8896ff; /* Slightly darker gray */
}

.two {
  padding: 100px 5%; /* More vertical space, responsive horizontal */
  max-width: 1300px;
  margin: 0 auto;
}


.two .cen {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 50px;
}

.two p.cen {
  font-size: 1.1rem;
  color: #4e4e4e;
  line-height: 1.6;
}

.two > div {
  display: flex;
  align-items: center;
  gap: 80px;
}

.two img {
  width: 60%;
  max-width: 600px;
  margin-left: -20%;
}

.two .side, .four .side {
  width: 45%;
}

.two h3 {
  font-size: 1.4rem;
  color: var(--grayish-blue);
  margin-bottom: 0.8rem;
}


.two .side p {
  font-size: 1rem;
  /* color: #4e4e4e; */
  line-height: 1.6;
  margin-bottom: 2.5rem;
} 

.three img{
  display: block;
  margin: 0 auto;
  width: 60%;
}

.four .side {
  text-align: center;
  margin: auto;
}


.features-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  max-width: 1200px;
  margin: 60px auto;
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 350px;
  padding: 20px;
}

.feature img {
  margin-bottom: 20px;
  height: 40px;
}

.feature-text h3 {
  margin-bottom: 15px;
  color: var(--grayish-blue);
}

.feature-text p {
  font-size: 16px;
  line-height: 1.6;
}

.company-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 50px;
  margin-top: 80px;
}

.company-logos img {
  height: 40px;
  width: auto;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.company-logos img:hover {
  opacity: 1;
}

footer {
  background-color: #f5f6f8;
  padding: 3rem 0;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-logo {
  width: 60px;
  height: auto;
}

.footer-links {
  width: 100%;
  display: flex;
  justify-content: center;
}

.links-column {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 0 2rem;
}

.links-column a {
  color: #4c545d;
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.3s ease;
}

.links-column a:hover {
  color: #26baa4;
}

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

.social-icons img {
  width: 24px;
  height: 24px;
  cursor: pointer;
}

.attribution {
  font-size: 0.7rem;
  margin-top: 3rem;
  color: #4c545d;
}

.attribution a {
  color: #26baa4;
}

/* ===== Responsive Adjustments ===== */
@media (min-width: 2000px) {

  p, .two .side p{
    font-size: 36px;
    color: var(--darkgrayish-blue);
    max-width: max-content;
  }

  h1, h2{
    color: var(--grayish-blue);
    font-size: 80px;
  }

  .two h3, .four h3{
    font-size: 60PX;
    color: var(--grayish-blue);
  }

  button{
    font-size: 35px;
  }
  .two .cen{
    max-width: 100%;
  }
    
  .two > div {
    flex-direction: column;
    gap: 50px;
  }
  
  .two img,
  .two .side,
  .four .side {
    width: auto;
    margin-left: 0;
    text-align: center;
  }

  .side p{
    margin: auto;
  }
  
  .two img {
    max-width: 500px;
    margin: 0 auto;
    transform: none; /* Remove 3D effect on mobile */
  }

  .four img{
    width: 90px;
  }

  .ios, .mac{
    height: 90px;
    width: 40%;
    margin: 15px;
  }

}

/* Stack columns on mobile */
@media (max-width: 768px) {
  .two > div {
    flex-direction: column;
    gap: 30px;
  }
  
  .two img, .three img {
    margin: 30px;
    width: 100%;
  }
  
  .side {
    text-align: center;
    padding: 15px;
  }
  
  .side h3::before {
    display: none; /* Remove decorative bullets */
  }

  .features-container {
    flex-direction: column;
    align-items: center;
  }
  
  .company-logos {
    gap: 30px;
  }
  
  .company-logos img {
    height: 30px;
  }

  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0 2rem;
  }
  
  .footer-links {
    justify-content: space-between;
    max-width: 600px;
  }
  
  .links-column {
    align-items: flex-start;
  }

}

@media (max-width: 480px) {
  .footer-links {
    flex-direction: column;
    gap: 30px;
  }
  
  .links-column {
    align-items: center;
  }
}


@media (min-width: 320px) and (max-width: 768px) {

    body, section {
        width: 100%;
        margin: 0 auto; /* Center horizontally */
        text-align: center; /* Center inline elements */
    }

    .container {
        display: flex;
        flex-direction: column;
        align-items: center; /* Center horizontally */
        justify-content: center; /* Center vertically (if needed) */
    }

    img, button {
        display: block;
        margin-left: auto;
        margin-right: auto;
    }

    p, h1, h2 {
        max-width: 100%;
        text-align: center;
        margin: 0 auto;
    }

    /* Mobile-first centering (applies to all screens) */
    section {
        width: 100%;
        margin: 0 auto;
        padding: 20px;
        text-align: center; /* Center text and inline elements */
    }

    /* Center child elements (e.g., divs, images) */
    section > div {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    /* Center images and buttons */
    img, button {
        display: block;
        margin: 0 auto;
    }

    .two .side{
      width: 100%;
    }

    .ios, .mac {
      width: 80%;
      height: 50px;
    }
    
  .four .side {
    width: 100%;
  }
}