:root {
    --bg-color: linear-gradient(60deg, #7979d9, #4a4ac7, #4343e9);
    --chess-bg-color: linear-gradient(60deg, #6429edb2, #5c1bf4b2, #4c00ffb2);
    --player-bg-color: linear-gradient(60deg, #4607d6b2, #3b04bbb2, #24046fb2);
    --shadow-color: #8959f969;
    --button-color: #07c531;
}

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

html {
    font-family: sans-serif, Arial, Helvetica;
}

body {
    display: flex;
    width: 100vw;
    min-height: 100vh;
}

.centralized {
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    flex-direction: column;
    gap: 15px;
    background-image: var(--bg-color);
    flex: 1;
}

.chess-clock {
    background-image: var(--chess-bg-color);
    color: #fff;
    height: 575px;
    width: 500px;
    border-radius: 5px;
    overflow: hidden;
}

.player-clock {
    font-size: 64px;
    font-weight: 600;
    width: 100%;
    height: 50%;
    cursor: pointer;
}

.player-clock.running {
    background-image: var(--player-bg-color);
    box-shadow: inset 3px 3px 75px var(--shadow-color);
}

.player-clock:last-child {
    border-top: 0.5px solid #555;
}

.game-buttons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.game-buttons button {
    border: none;
    border-radius: 5px;
    padding: 8px 12px;
    font-size: 18px;
    background-color: var(--button-color);
    color: #fff;
    cursor: pointer;
}

@media screen and (max-width: 600px) {
    .chess-clock {
        width: 100%;
        height: 100%;
    }
    
    .game-buttons {
        position: absolute;
    }
    .player-clock:first-child {
        transform: rotateZ(180deg);
    }
}