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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    background-color: #f9f9f9;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);

    top: 0;
    z-index: 1000;
}

.kairom-log {
    width: 180px;
    height: auto;
}

.menu-container {
    position: relative;
}

.hamburger {
    display: none;
    width: 30px;
    height: 21px;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger .line {
    width: 100%;
    height: 3px;
    background-color: #333;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.dropdown-menu {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
}

.dropdown-menu li {
    margin: 0 15px;
}

.dropdown-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 15px;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.dropdown-menu a:hover {
    color: #007bff;
    background-color: #f0f0f0;
    border-radius: 5px;
}

@media (max-width: 900px) {
    .hamburger {
        display: flex;
    }

    .dropdown-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        right: 0;
        background-color: #ffffff;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        width: 200px;
        z-index: 1000;
    }

    .dropdown-menu li {
        margin: 0;
        border-bottom: 1px solid #eee;
    }

    .dropdown-menu li:last-child {
        border-bottom: none;
    }

    .dropdown-menu a {
        color: #333;
        padding: 12px 20px;
    }

    .dropdown-menu.show {
        display: flex;
    }
}

h1, h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #333;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

.container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 900px) {
    .container {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }

    .introduction {
        text-align: left;
    }

    .image-holder1 {
        justify-self: end;
    }
}

.image1 {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.introduction {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 4rem;
}


.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background-color: #ffffff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #007bff;
}

.card-description {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
}

.card-container {
    display: grid;
    align-items: start;
    grid-template-columns: repeat(3, 1fr);
}

@media (min-width: 0px) and (max-width: 600px) {
    .card-container {
        grid-template-columns:1fr;
    } 
  }

  @media (min-width: 600px) and (max-width: 1200px) {
    .card-container { 
        grid-template-columns: 1fr 1fr; 
    }
  }

footer p {
    margin: 0;
    font-size: 1rem;
}

details {
    background-color: #f9f9f9;
    padding: 10px 20px;
    font-size: 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}