html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* prevent horizontal scroll */
    margin-top: 3vh;
    background-color: black;
}

/* fixed navigation bar */
.navbar {
    display: flex;
    justify-content: center;
    overflow: hidden;
    background-color: rgba(1,1,1, 0.8);
    position: fixed;
    top: 0;
    width: 100%;
    padding: 10px 0; 
    z-index: 1000; 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

/* nav links */
.navbar a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 1.3rem; 
    transition: background 0.3s, color 0.3s; /* hover effect*/
}

#highlight{
    background-color: #fc6a3e;
    color: white;
    border-radius: 0.5vw; 
}

/* hover effect for links */
.navbar a:hover {
    background: rgba(255, 255, 255, 0.2); 
    color: #fff; 
    border-radius: 0.5vw; 
}

.navbar #places:hover {
    background: rgba(255, 255, 255, 0.2); 
    color: #fff; 
}



/* default styles */
h1{
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 4.5vh;
    line-height: 1.5;
}

p{
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 2.5vh;
    line-height: 1.5;
    
}


/* Page Contents */

.main{
    display: grid;
    align-items: center;
    background-color: black;
    margin-top: 1.5vw;
}

.welcome{
    grid-column: 1 / span 2;
    position: relative; 
    width: 100%; 
    height: 100vh; 
    overflow: hidden;
    margin-top: 3.5vh;
}

.welcome img {
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
}

/* card grid */
.container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    grid-template-rows: 28vh 64vh 64vh;
    justify-self: center;
    gap: 2vw;
    width: 90vw;
    overflow: hidden;
    margin-bottom: 0.5vw;
}

.description{
    display: flex;
    flex-direction: column;
    grid-row: 1 / 2;
    grid-column: 1 / span 2;
    background-color: black;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-top: 1vw;
}

.vertical-card, .horizontal-card{
    display: flex;
    flex-direction: column;
    background-color: black;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-top: 0.5vw;
}

.vertical-card{
    grid-row: 2 / span 2;
    grid-column: 1 / 2;
}

.card-image {
    height: 60%;
    background-size: cover;
    background-position: center;
}

.card-description {
    position: relative;
    align-content: center;
    align-self: center;
    padding: 1.5vw;
    background-color: rgb(26, 26, 26);
    height: 100%;
    box-shadow: 0 -10px 20px rgba(0, 0, 0, 0.3); 
}

.card-text {
    position: relative;
    padding-top: 0.5vw;
    padding-right: 1.5vw;
    padding-left: 1.5vw;
    padding-bottom: 1.5vw;
    background-color: rgb(26, 26, 26);
    height: 40%;
    box-shadow: 0 -10px 20px rgba(0, 0, 0, 0.3); 
}
  
.card-text h2, .card-description h2{
    font-size: 1.2rem;
    font-family: Georgia, 'Times New Roman', Times, serif;
    color: white;
}
  
.card-text p {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 0.8vw;
    color: white;
}




/* additional features */

/* Welcome overlay */
/* fade in animation */
@keyframes fadeIn {
    from {
        opacity: 0; /* Start transparent */
    }
    to {
        opacity: 1; /* End fully visible */
    }
}

/* dark overlay */
.welcome::before {
    content: "";
    position: absolute; 
    top: 0;
    left: 0;
    width: 100%; 
    height: 100%; 
    background: rgba(0, 0, 0, 0.5); /* black overlay */
    z-index: 1; /* ensure overlay is below text */
}

/* text overlay id */
#welcome {
    font-family: oswald;
    font-size: 6vw; 
    color: white; 
    position: absolute; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -100%); 
    text-align: center; 
    z-index: 2; 
    text-transform: uppercase; 
    letter-spacing: 0.1em; 
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7); 
    white-space: nowrap; 
    padding: 0 10px;
    animation: fadeIn 2s ease-in; /*fade in animation*/
}



/* footer */
footer {
    margin-top: 1.5vw;
    background-color: #111;
    color: #fff;
    padding: 1vw;
    text-align: center;
    position: relative;
    bottom: 0;
    width: 100%;
}

.footer-container {
    font-size: 0.5vw;
    font-family: 'Times New Roman', Times, serif;
    align-items: center;
}

/* media queries for mobile */

/* nav bar */
@media (max-width: 768px) {
    .navbar{
        display:flex;
        flex-direction: row;
        flex-wrap: wrap;
        overflow: hidden;
        justify-content: center;
        padding: 8px 0;
        margin: 0 auto;
    }

    .navbar a {
        padding: 2vh 2vw; 
        margin: 1vh 0;
        font-size: 3vw;
        flex:none;
    }

    h1{
        font-size: 5vw;
    }
    p{
        font-size: 3.5vw;
    }
    .container {
        margin-top: 2vh;
        margin-bottom: 2vh;
        grid-gap: 4.5vh;
        grid-template-columns: 1fr;
        grid-template-rows: 26vh repeat(3, 80vh);
    }
  
    .description {
        grid-row: 1 / 2;
        grid-column: 1 / -1;
    }
    .vertical-card {
        grid-row: 2 / 3;
        grid-column: 1 / -1;
    }
    .horizontal-card {
        grid-row: auto;
        grid-column: 1 / -1;
    }
    .card-text h2, .card-description h2{
        font-size: 3vw;
        margin-bottom: 0;
    }
    .card-text p, .card-description p{
        font-size: 2vw;
    }
    footer{
        padding: 1vw;
        margin-top: 3vw;
    }
    footer p {
        font-size: 2.5vw;
    }
}