.register-container {
    min-height: 90vh;
    display: flex;
    gap: 30px;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle, #111, #000);
    padding: 40px;
}

.register-card,
.external-card {
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid #ffcc00;
    border-radius: 14px;
    padding: 30px;
    width: 360px;
    box-shadow: 0 0 25px rgba(255, 204, 0, 0.25);
    animation: fadeUp 0.8s ease;
}

.register-title {
    color: #ffcc00;
    text-align: center;
    margin-bottom: 25px;
}

.form-group {
    position: relative;
    margin-bottom: 18px;
}

    .form-group i {
        position: absolute;
        top: 50%;
        right: 12px;
        transform: translateY(-50%);
        color: #ffcc00;
    }

.form-control {
    background: #111;
    border: 1px solid #333;
    color: #fff;
    padding: 10px 40px 10px 12px;
    border-radius: 8px;
}

    .form-control:focus {
        outline: none;
        border-color: #ffcc00;
        box-shadow: 0 0 10px #ffcc00;
    }

.register-btn {
    width: 100%;
    background: linear-gradient(135deg, #ffcc00, #ff9900);
    border: none;
    padding: 12px;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

    .register-btn:hover {
        transform: translateY(-2px) scale(1.02);
        box-shadow: 0 0 20px #ffcc00;
    }

.external-card h3 {
    color: #ffcc00;
    margin-bottom: 15px;
}

.external-btn {
    width: 100%;
    background: #111;
    border: 1px solid #ffcc00;
    color: #ffcc00;
    padding: 10px;
    border-radius: 8px;
    transition: 0.3s;
}

    .external-btn:hover {
        background: #ffcc00;
        color: #000;
    }

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}