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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
}

/* Animations de fond */
.background-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    left: 80%;
    animation-delay: 2s;
    animation-duration: 10s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
    animation-duration: 7s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 10%;
    left: 70%;
    animation-delay: 1s;
    animation-duration: 9s;
}

.shape-5 {
    width: 90px;
    height: 90px;
    top: 40%;
    left: 5%;
    animation-delay: 3s;
    animation-duration: 6s;
}

.shape-6 {
    width: 70px;
    height: 70px;
    top: 30%;
    left: 90%;
    animation-delay: 5s;
    animation-duration: 11s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.6;
    }
}

/* Particules */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: particle-float 15s linear infinite;
}

@keyframes particle-float {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(100px);
        opacity: 0;
    }
}

/* Container principal */
.main-container {
    position: relative;
    z-index: 10;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.content-box {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 50px;
    max-width: 600px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: box-appear 1s ease-out;
}

@keyframes box-appear {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 25px;
    font-weight: 300;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 40px;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
}

.buttons-container {
    margin-bottom: 50px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    box-shadow: 0 5px 20px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.6);
}

.btn-disabled {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.5);
    cursor: not-allowed;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.dev-section {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 30px;
}

.dev-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .content-box {
        padding: 30px 20px;
        margin: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .content-box {
        padding: 25px 15px;
    }
    
    h1 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    .description {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }
    
    .buttons-container {
        margin-bottom: 35px;
    }
}