* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: #f5f5f5;
    min-height: 100vh;
    padding: 40px 20px;
    text-align: center;
    display:flex;
    align-items: center;
    flex-direction: column;
}

#video{
    width: 300px;
    max-width: 600px;
    border-radius: 12px;
    margin: 20px 0;
}

h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

h2 {
    font-weight: 400;
    opacity: 0.85;
    margin-bottom: 20px;
}

h3 {
    margin: 40px 0 16px;
    font-size: 1.4rem;
}

p {
    max-width: 600px;
    opacity: 0.9;
    line-height: 1.6;
}

#functions {
    display: flex;
    justify-content: center;
    gap: 20px;
    list-style: none;
    flex-wrap: wrap;
    margin-top: 20px;
}

#functions li {
    width: 180px;
    height: 120px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    text-align: center;
    font-weight: 500;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

#functions li:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.35);
}

/* Upcoming features */
#upcoming-features {
    list-style: none;
    max-width: 400px;
    margin: 0 auto;
}

#upcoming-features li {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 10px;
}

#developers {
    list-style: none;
}

#developers li {
    font-weight: 600;
    letter-spacing: 0.5px;
}
a {
    color: #81aaff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    h1 {
        font-size: 2.4rem;
    }

    #functions li {
        width: 100%;
        max-width: 320px;
        height: auto;
        min-height: 90px;
    }
}

button{
    width: 150px;
    height: 40px;
    margin: 20px;
    background: rgb(0 238 255 / 22%);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: transparent;
    padding: 16px;
    text-align: center;
    font-weight: 500;
    display: flex;
    flex-direction: column;
    align-content: center;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}