/**** Reset ****/

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
    border: none;
    text-decoration: none;
}

body {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

button {
    margin: 40px 0;
}

/**** Bouton inscrpition button marquee ****/

.btn__marquee {
    padding: 20px 35px;
    font-size: 32px;
    border-radius: 3px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid #000000;
    background-color: #f1f1f1;
}

.marquee {
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    z-index: 10;
    white-space: nowrap;
    width: 100%;
    height: 100%;
}

.marquee span {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    width: 100%;
    height: 100%;
}

.btn__marquee:hover .base__text {
    opacity: 0;
}

.btn__marquee:hover .marquee {
    animation: infiniteSpin 1s linear infinite;
}

@keyframes infiniteSpin {
    100% {
        transform: translateX(-100%);
    }
}

.btn__marquee:hover .marquee span {
    font-style: italic;
}

/**** Bouton arc-en-ciel  ****/

.rainbow {
    padding: 20px 50px;
    font-size: 20px;
    text-transform: uppercase;
    cursor: pointer;
    background-color: transparent;
    position: relative;
    overflow: hidden;
    color: #000000;
    border-radius: 30px;
    box-shadow: 0 -0 0 0 rgba(143, 64, 248, .5), 0 0 0 0 rgba(39, 200, 255, .5);
    transition: all 0.2s ease-out;
}

.rainbow::after {
    content: '';
    width: 400px;
    height: 400px;
    position: absolute;
    top: -50px;
    left: -100px;
    background-image: linear-gradient(225deg, #27d86c 0%, #26caf8 50%, #c625d0 100%);
    z-index: -1;
    transition: all 0.5s ease-out;
}

.rainbow:hover::after {
    transform: rotate(150deg);
}
  
.rainbow:hover {
    transform: translate(0,-6px);
    box-shadow: 10px -10px 25px 0px rgba(143, 64, 248, .25), -10px 10px 25px 0px rgba(39, 200, 255, .25);
}

/**** Bouton avec animation sur les bordures ****/

.login {
    width: 200px;
    cursor: pointer;
    background-color: #f1f1f1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    text-transform: uppercase;
    padding: 25px;
}

.login::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-top: 2px solid #5630ff;
    border-right: 2px solid #5630ff;
    animation: border-top-right 3s infinite alternate;
}

@keyframes border-top-right {
    0% {
        width: 0;
        height: 0;
    }
    25% {
        width: 200px;
        height: 0;
    }
    50% {
        width: 200px;
        height: 98%;
    }
    100% {
        width: 200px;
        height: 98%;
    }
}

.login::after {
    content: "";
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 0;
    border-bottom: 2px solid #5630ff;
    border-left: 2px solid #5630ff;
    animation: border-bottom-left 3s infinite alternate;
}

@keyframes border-bottom-left {
    0% {
        width: 0;
        height: 0;
        opacity: 0;
    }
    50% {
        width: 0;
        height: 0;
        opacity: 0;
    }
    50.1% {
        width: 0;
        height: 0;
        opacity: 1;
    }
    75% {
        width: 200px;
        height: 0;
        opacity: 1;
    }
    100% {
        width: 200px;
        height: 96.5%;
        opacity: 1;
    }
}

/**** Bouton avec effet néon ****/

.neon__link {
    position: relative;
    display: inline-block;
    padding: 15px 30px;
    color: #2198fa;
    background-color: #031321;
    text-transform: uppercase;
    text-align: center;
    font-size: 24px;
    letter-spacing: 4px;
    overflow: hidden;
    margin: 40px 0;
    transition: all 0.2s ease-out;
}

.neon__link:hover {
    color: #255784;
    background-color: #2198fa;
    box-shadow: 0 0 10px #2198fa, 0 0 40px #2198fa, 0 0 80px #2198fa;
    transition-delay: 1s;
}

.neon__link span {
    position: absolute;
    display: block;
}

.neon__link span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    background-image: linear-gradient(90deg, transparent,#2198fa);
}

.neon__link:hover span:nth-child(1) {
    left: 100%;
    transition: 1s;
}

.neon__link span:nth-child(2) {
    top: -100%;
    right: 0;
    width: 4px;
    height: 100%;
    background-image: linear-gradient(180deg, transparent,#2198fa);
}

.neon__link:hover span:nth-child(2) {
    top: 100%;
    transition: 1s;
    transition-delay: 0.25s;
}

.neon__link span:nth-child(3) {
    bottom: 0;
    right: -100%;
    width: 100%;
    height: 4px;
    background-image: linear-gradient(270deg, transparent,#2198fa);
}

.neon__link:hover span:nth-child(3) {
    right: 100%;
    transition: 1s;
    transition-delay: 0.5s;
}

.neon__link span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 4px;
    height: 100%;
    background-image: linear-gradient(360deg, transparent,#2198fa);
}

.neon__link:hover span:nth-child(4) {
    bottom: 100%;
    transition: 1s;
    transition-delay: 0.75s;
}

/**** .btn = classe générique pour le bouton berder pop, les boutons background slide, le bouton background circle et le bouton background underline ****/

.btn {
    background-color: var(--background-color);
    color: #222;
    padding: 20px 35px;
    position: relative;
    cursor: pointer;
    font-size: 24px;
    text-transform: uppercase;
  
    --background-color: #f1f1f1;
    --border-size: 2px;
    --accent-color: #00aaff;
}
  
/**** Bouton border pop ****/

.btn.btn-border-pop::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    border: var(--border-size) solid var(--background-color);
    transition: top, left, right, bottom, 0.4s ease-out;
}
  
.btn.btn-border-pop:hover::before,
.btn.btn-border-pop:focus::before {
    top: calc(var(--border-size) * -4);
    left: calc(var(--border-size) * -4);
    right: calc(var(--border-size) * -4);
    bottom: calc(var(--border-size) * -4);
}
  
/**** bouton background slide ****/

.btn.btn-background-slide {
    transition: color 0.4s ease-out;
    z-index: 1;
}

.btn.btn-background-slide::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease-out;
}
  
.btn.btn-background-slide:hover::before,
.btn.btn-background-slide:focus::before {
    transform: scaleX(1);
}
  
.btn.btn-background-slide:hover,
.btn.btn-background-slide:focus {
    color: #ffffff;
}

/**** Bouton background slide right ****/

.btn.btn-background-slide-right {
    transition: color 0.4s ease-out;
    z-index: 1;
}

.btn.btn-background-slide-right::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease-out;
}
  
.btn.btn-background-slide-right:hover::before,
.btn.btn-background-slide-right:focus::before {
    transform: scaleX(1);
}
  
.btn.btn-background-slide-right:hover,
.btn.btn-background-slide-right:focus {
    color: #ffffff;
}

/**** Bouton background slide center ****/

.btn.btn-background-slide-center {
    transition: color 0.4s ease-out;
    z-index: 1;
}

.btn.btn-background-slide-center::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.4s ease-out;
}
  
.btn.btn-background-slide-center:hover::before,
.btn.btn-background-slide-center:focus::before {
    transform: scaleX(1);
}
  
.btn.btn-background-slide-center:hover,
.btn.btn-background-slide-center:focus {
    color: #ffffff;
}

/**** Bouton background slide up ****/

.btn.btn-background-slide-up {
    transition: color 0.4s ease-out;
    z-index: 1;
}

.btn.btn-background-slide-up::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    background-color: var(--accent-color);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s ease-out;
}
  
.btn.btn-background-slide-up:hover::before,
.btn.btn-background-slide-up:focus::before {
    transform: scaleY(1);
}
  
.btn.btn-background-slide-up:hover,
.btn.btn-background-slide-up:focus {
    color: #ffffff;
}

/**** Bouton background slide down  effet coulissant ****/

.btn.btn-background-slide-down {
    transition: color 0.4s ease-out;
    z-index: 1;
}

.btn.btn-background-slide-down::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    background-color: var(--accent-color);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.4s ease-out;
}
  
.btn.btn-background-slide-down:hover::before,
.btn.btn-background-slide-down:focus::before {
    transform: scaleY(1);
}
  
.btn.btn-background-slide-down:hover,
.btn.btn-background-slide-down:focus {
    color: #ffffff;
}

/**** Bouton background circle ****/

.btn.btn-background-circle {
    z-index: 1;
    overflow: hidden;
    background-color: var(--accent-color);
    transition: color 0.5s ease-out;
}
  
.btn.btn-background-circle::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-color: var(--background-color);
    border-radius: 50%;
    transform: scale(1.5);
    transition: transform 0.5s ease-out;
}
  
.btn.btn-background-circle:hover::before,
.btn.btn-background-circle:focus::before {
    transform: scale(0);
}
  
.btn.btn-background-circle:hover,
.btn.btn-background-circle:focus {
    color: #ffffff;
}
  
/**** Bouton background underline ****/

.btn.btn-border-underline-bottom::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: var(--border-size);
    background-color: var(--accent-color);
    transform: scaleX(0);
    transition: transform 0.4s ease-out;
}
  
.btn.btn-border-underline-bottom:hover::before,
.btn.btn-border-underline-bottom:focus::before {
    transform: scaleX(1);
}

/**** Bouton border underline top ****/

.btn.btn-border-underline-top::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: var(--border-size);
    background-color: var(--accent-color);
    transform: scaleX(0);
    transition: transform 0.4s ease-out;
}
  
.btn.btn-border-underline-top:hover::before,
.btn.btn-border-underline-top:focus::before {
    transform: scaleX(1);
}