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

body {
    display: flex;
    place-items: center;
    justify-content: center;
    overflow-x: hidden;
    background: #050505;
    height: 100vh;
    font-family: 'Nunito', sans-serif;
}

.container {
    display: grid;
    place-items: center;
    justify-content: center;
}

.div {
    display: flex;
}

ul {
    display: grid;
    grid-template-columns: 1fr;
}

li {
    list-style: none;
    display: grid;
    place-items: center;
    font-size: 0;
}

.box {
    margin: .5px;
    width: 75px;
    height: 75px;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.9);
}
/* title*/
h1 {
    margin: 5px 20px 50px 20px;
    font-size: 2.5rem;
    text-align: center;
    color: rgb(255, 255, 255);
    border: 2px solid #202029;
    padding: 10px;
    background-color: #000000;
    border-radius: 5px;
}

/* B/W turn, pour la couleur rechercher "// Toggling the turn" dans logic.js*/
#tog {
    margin: 40px 0px;
    font-size: 1.5rem;
    text-align: left;
    padding: 10px;
    border-radius: 5px;
}


#reset-btn {
    background-color: #3b0f0e;
    border: none;
    color: white;
    border: 2px rgb(red, green, blue) #ffffff;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 20px;
    margin-top: 4px;
    cursor: pointer;
    border-radius: 5px;
}

.all-img {
    width: 65px;
    position: relative;
    bottom: 5px;
}

.all-pawn {
    transform: scale(.67);
}

.authcont {
    width: 100vw;
}

.author {
    float: right;
    margin-right: 50px;
}

@media (max-width:650px) {
    .box {
        width: 11vw;
        height: 11vw;
    }

    .all-img {
        width: 7vw;
    }
    #tog {
        margin: 30px 0px;
        font-size: 20px;
    }
    #reset-btn {
        font-size: 10px;
    }
    h1{
        font-size: 30px;
    }

}

@media (max-width:400px) {

    h1{
        font-size: 20px;
    }
    #tog {
        margin: 30px 0px;
        font-size: 10px;
    }

}


ul.card {
    position: relative;
    background-color: #2c3e50; 
}

@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

ul.card::after, ul.card::before {
  content: '';
  position: absolute;
  
  width: 650px;
    height: 650px;
  background-image: conic-gradient(from var(--angle), #000000, #363636, #7a7a7a, #363636, #000000);
  top: -34px;
  left: 305px;
  translate: -50% -50%;
  z-index: -1; 
  border-radius: 10px; 
  animation: 10s spin linear infinite;
}

ul.card::before {
  filter: blur(1.5rem);
  opacity: 0.25;
}

@keyframes spin {
  from {
    --angle: 0deg;
  }
  to {
    --angle: 360deg;
  }
}



#pendule-container {
    position: absolute;   
    left: 1400px;            
    top: 450px;             
    transform: translateY(-50%); 
    
    display: flex;
    flex-direction: column; 
    gap: 20px;
    background: rgba(0, 0, 0, 0.7); 
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
    z-index: 10;         
    text-align: center;
    color: white;
    font-family: sans-serif;
}

#menu-pendule {
    font-size: 1.2rem;
    font-weight: bold;
}

#temps-initial {
    width: 70px;
    font-size: 1.2rem;
    text-align: center;
    margin-top: 5px;
    border-radius: 5px;
    border: none;
    padding: 5px;
}

.pendule {
    background-color: #2c3e50;
    color: #fff;
    font-size: 2.5rem;
    font-family: monospace;
    padding: 15px 20px;
    border-radius: 8px;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

.pendule-active {
    background-color: #e74c3c;
    border-color: #fff;
    box-shadow: 0 0 20px rgba(231, 76, 60, 0.9);
    transform: scale(1.05); 
}

#message-fin {
    color: #ff4757;
    font-weight: bold;
    font-size: 1.2rem;
}


@media (max-width: 800px) {
    #pendule-container {
        display: none; 
    }
}