/* ================================
   GLOBAL
================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: 'Oxanium', sans-serif;
    background:
        radial-gradient(circle at 20% 10%,
            rgba(100, 60, 255, .18),
            transparent 35%),

        radial-gradient(circle at 80% 30%,
            rgba(0, 200, 255, .15),
            transparent 40%),

        radial-gradient(circle at 50% 90%,
            rgba(80, 255, 120, .08),
            transparent 35%),

        linear-gradient(180deg,
            #06070D,
            #090D16,
            #050608);
}

/* ================================
   HEADER
================================ */
header {
    text-align: center;
    padding: 40px 20px 20px;
}

header h1 {
    margin: 0;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    letter-spacing: 3px;
    font-family: 'Orbitron', sans-serif;
    color: #F5F8FF;
    text-shadow:
        0 0 10px rgba(79, 195, 247, .35),
        0 0 30px rgba(79, 195, 247, .15);
}

.subtitle {
    margin-top: 15px;
    color: #BBBBBB;
    font-size: 1.15rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* ================================
   MAIN CONTENT
================================ */
main {
    max-width: 900px;
    margin: auto;
    padding: 20px;
}

/* ================================
   START BUTTON
================================ */
#startContainer {
    text-align: center;
    margin: 40px 0;
}

button {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: .15em;
    font-weight: 600;
    background:
        linear-gradient(135deg,
            #4FC3F7,
            #00E5FF,
            #8A5CFF);

    background-size: 250%;
    color: white;
    border: none;
    border-radius: 40px;
    padding: 18px 50px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: .35s;
    box-shadow: 0 0 30px rgba(0, 220, 255, .35);
}

button:hover {
    background-position: right center;
    box-shadow: 0 0 40px rgba(0, 220, 255, .6);
}


/* ================================
   INFORMATION PANELS
================================ */
.instructions,
.roadmap {
    border-radius: 14px;
    padding: 25px;
    margin: 25px 0;
    backdrop-filter: blur(8px);
    background:
        linear-gradient(135deg,
            rgba(35, 45, 70, .55),
            rgba(15, 20, 35, .75));

    backdrop-filter: blur(14px);
    border: 1px solid rgba(120, 170, 255, .15);
    box-shadow: 0 0 25px rgba(0, 0, 0, .35);

}

.instructions h2,
.roadmap h2 {
    margin-top: 0;
    color: #3FC8FF;
    font-weight: 400;
    letter-spacing: 1px;
    font-family: 'Orbitron', sans-serif;
}


.instructions p,
.roadmap p {
    line-height: 1.8;
    color: #DDDDDD;
}

/* ================================
   CANVAS
================================ */
canvas {
    height: 100vh;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    display: block;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    background: black;
    box-shadow: 0 0 35px rgba(0, 0, 0, 0.45);
}

/* ================================
   MOBILE
================================ */
@media (max-width: 768px) {

    header {
        padding: 25px 15px 10px;
    }

    .subtitle {
        font-size: 1rem;
    }

    .instructions,
    .roadmap {
        padding: 20px;
    }

}


.fadeOut {
    opacity: 0;
    transition: opacity .5s ease;
    pointer-events: none;
}