body {
    background: radial-gradient(ellipse at center, #0a0f2a 0%, #03050b 100%);
    min-height: 100vh;
    font-family: 'Poppins', 'Segoe UI', sans-serif;
    color: #fff;
}
.stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}
.star {
    position: absolute;
    background-color: #fff;
    border-radius: 50%;
    opacity: 0.8;
    animation: twinkle 3s infinite alternate;
}
@keyframes twinkle {
    from { opacity: 0.3; }
    to { opacity: 1; }
}
.navbar {
    background: rgba(0,0,0,0.5) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}
.card {
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 15px;
    color: white;
    transition: transform 0.2s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}
.btn-primary {
    background: linear-gradient(45deg, #4e54c8, #8f94fb);
    border: none;
}
.btn-primary:hover {
    background: linear-gradient(45deg, #3b41b0, #6f74e0);
    transform: scale(1.02);
}
.btn-outline-light {
    border-color: rgba(255,255,255,0.3);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
}
.form-control, .form-select {
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
}
.form-control:focus, .form-select:focus {
    background: rgba(0,0,0,0.7);
    border-color: #8f94fb;
    color: white;
    box-shadow: 0 0 0 0.25rem rgba(143,148,251,0.25);
}
.alert {
    background: rgba(0,0,0,0.7);
    border: none;
    color: white;
}
.alert-success { background: rgba(40,167,69,0.8); }
.alert-danger { background: rgba(220,53,69,0.8); }
.alert-warning { background: rgba(255,193,7,0.8); }
.list-group-item {
    background-color: rgba(0,0,0,0.5);
    border-color: rgba(255,255,255,0.1);
}
.list-group-item:hover {
    background-color: rgba(255,255,255,0.1);
}

.form-check-input {
    background-color: rgba(0,0,0,0.5);
    border-color: rgba(255,255,255,0.3);
}
.form-check-input:checked {
    background-color: #8f94fb;
    border-color: #8f94fb;
}
.form-check-label {
    color: #fff;
}

.star {
    position: absolute;
    background-color: #fff;
    border-radius: 50%;
    opacity: 0.8;
}
@media (max-width: 768px) {
    .star {
        animation: none !important;
        opacity: 0.6;
    }
}

/* Для главной страницы кнопки */
.btn-primary, .btn-outline-light {
    backdrop-filter: blur(4px);
    transition: all 0.3s ease;
}
.btn-primary {
    background: linear-gradient(45deg, #4e54c8, #8f94fb);
    border: none;
}
.btn-outline-light {
    background-color: rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.3);
}
.btn-outline-light:hover {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}