:root {
    --gd-blue: #0080ff;
    --gd-green: #00ff00;
    --gd-bg: #000022;
}

body,
html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--gd-bg);
    font-family: 'Orbitron', sans-serif;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

#gameCanvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#hud {
    position: absolute;
    top: 20px;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
    z-index: 10;
}

#progress-container {
    width: 60%;
    height: 10px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    border-radius: 5px;
    overflow: hidden;
}

#progress-bar {
    width: 0%;
    height: 100%;
    background: var(--gd-green);
    box-shadow: 0 0 10px var(--gd-green);
}

#percent {
    color: white;
    font-size: 1.5rem;
    margin-top: 10px;
    text-shadow: 0 0 5px var(--gd-blue);
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.menu {
    text-align: center;
    padding: 50px;
    background: rgba(0, 128, 255, 0.1);
    border: 3px solid var(--gd-blue);
    border-radius: 20px;
    box-shadow: 0 0 30px var(--gd-blue);
}

.logo {
    font-size: 4rem;
    color: white;
    margin-bottom: 20px;
    letter-spacing: 5px;
}

.logo span {
    color: var(--gd-blue);
}

button {
    background: var(--gd-green);
    color: black;
    border: none;
    padding: 20px 60px;
    font-size: 2rem;
    font-weight: 900;
    border-radius: 10px;
    cursor: pointer;
    transition: 0.2s;
    box-shadow: 0 0 15px var(--gd-green);
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--gd-green);
}

.hidden {
    display: none !important;
}