body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    overflow: hidden;
    color: white;
    text-align: center;
}

/* Анимированный градиент */
.bg {
    position: fixed;
    width: 100%;
    height: 100%;
    background: linear-gradient(-45deg, #ff00cc, #3333ff, #00ffcc, #ffcc00);
    background-size: 400% 400%;
    animation: gradient 10s ease infinite;
    z-index: -1;
}

@keyframes gradient {
    0% {background-position: 0% 50%;}
    50% {background-position: 100% 50%;}
    100% {background-position: 0% 50%;}
}

/* Карточка */
.card {
    margin-top: 15%;
    background: rgba(0,0,0,0.5);
    padding: 30px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    display: inline-block;
}

/* Кнопка */
button {
    font-size: 20px;
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    background: linear-gradient(45deg, #ffcc00, #ff0066);
    color: white;
    transition: 0.3s;
}

button:hover {
    transform: scale(1.1);
}

/* Лоадер */
.loader {
    border: 6px solid rgba(255,255,255,0.3);
    border-top: 6px solid white;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    margin: auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.hidden {
    display: none;
}

video {
    width: 100vw;
    height: 100vh;
    object-fit: cover;
}