:root {
    --cream: #fff6ec;
    --light-peach: #f7c69c;
    --warm-orange: #f2a154;
    --soft-brown: #5e4531;
    --rose-brown: #a55c5c;
    --sage: #7f9c90;
    --light-yellow: #f7eac2;
  }
  
  body {
    background: url("images/background.png") no-repeat center center fixed;
    background-size: cover;
    font-family: 'Quicksand', sans-serif;
    color: var(--soft-brown);
    margin: 0;
    padding: 60px 20px 0;
    text-align: center;
  }

  .sticky-header {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: var(--light-peach);
    color: var(--soft-brown);
    padding: 16px 20px;
    text-align: center;
    font-size: 30px;
    z-index: 999;
    border-bottom: 2px solid var(--warm-orange);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  }
  
  .sticky-header a {
    color: var(--rose-brown);
    font-weight: bold;
    font-size: 40px;
    text-decoration: none;
    border-bottom: 2px solid var(--rose-brown);
    padding-bottom: 2px;
  }
  
  .sticky-header a:hover {
    color: var(--warm-orange);
    border-color: var(--warm-orange);
  }
  
  .sticky-header .note {
    font-weight: normal;
    font-size: 15px;
    display: inline-block;
    margin-left: 8px;
    color: var(--soft-brown);
  }

  .logo-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .logo-img {
    max-width: 200px;
    height: auto;
  }  
  
  .about-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 20px;
  }
  
  .card {
    background-color: white;
    border: 3px solid var(--light-yellow);
    border-radius: 18px;
    box-shadow: 0 6px 12px rgba(0,0,0,0.05);
    color: var(--soft-brown);
  }

  .design-comparison {
    display: flex;
    flex-direction: column; 
    align-items: center;
    gap: 40px;
    margin-top: 40px;
  }
  
  .design-image {
    flex: 1 1 45%;
    text-align: center;
  }
  
  .design-image img {
    max-width: 100%;
    border: 2px solid var(--soft-brown);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  }  

  .footer {
    background-color: var(--light-peach);
    padding: 40px 20px 30px;
    margin-top: 60px;
    border-top: 3px solid var(--warm-orange);
  }
  
  .footer h2 {
    color: var(--rose-brown);
    font-size: 22px;
    margin-bottom: 15px;
  }
  
  .footer p {
    color: var(--soft-brown);
    max-width: 1500px;
    margin: 0 auto 10px;
    font-size: 16px;
  }
  
  .email-link {
    margin-top: 20px;
    font-weight: bold;
    font-size: 18px;
  }
  
  .email-link a {
    color: var(--rose-brown);
    text-decoration: none;
    border-bottom: 2px solid var(--rose-brown);
    padding-bottom: 2px;
  }
  
  .email-link a:hover {
    color: var(--warm-orange);
    border-color: var(--warm-orange);
  }
  
  
  h1, h2 {
    color: var(--rose-brown);
  }
  
  ul {
    padding-left: 20px;
  }
  
  ul li {
    margin-bottom: 6px;
  }
  
  .card-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
  }
  
  .flip-card {
    background-color: transparent;
    width: 300px;
    height: 220px;
    perspective: 1000px;
  }
  
  .flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
  }
  
  .flip-card:hover .flip-inner {
    transform: rotateY(180deg);
  }
  
  .flip-front,
  .flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 18px;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-shadow: 0px 6px 12px rgba(0,0,0,0.05);
    border: 3px solid var(--light-yellow);
  }
  
  .flip-front {
    background-color: var(--light-peach);
    color: var(--soft-brown);
  }
  
  .flip-back {
    background-color: white;
    color: var(--soft-brown);
    transform: rotateY(180deg);
    text-align: left;
    font-size: 15px;
    line-height: 1.5;
  }

  .email-icon {
    width: 32px;
    height: 32px;
    transition: transform 0.3s ease;
  }
  
  .email-icon:hover {
    transform: scale(1.2) rotate(-5deg);
  }